Colorado River negotiators are seen at the 2025 Colorado River Water Users Association Annual Conference. From left to right: Becky Mitchell (Colorado), Tom Buschatzke (Arizona), Brandon Gebhart (Wyoming), and John Entsminger (Nevada). (Photo by Jeniffer Solis/Nevada Current)
Nevada officials filed a federal lawsuit challenging the Trump administration’s order for cuts in water use Monday, marking a major escalation of tensions between the seven states that share the Colorado River. The complaint, filed in the U.S. District Court of Nevada, asserts that the U.S. Bureau of Reclamation’s operating plan unlawfully authorizes the federal government to reduce the state’s allocation of the river by up to 71 percent annually sometime over the next 10 years. Such a cut would slash the state’s share of 300,000 acre-feet down to 86,444 acre-feet. Nevada’s use, after cashing in water recycling credits with its state-of-the-art system, came in at 198,000 acre-feet last year.
“There are four states upstream of us that are facing zero mandatory reductions,” said John Entsminger, general manager of the Southern Nevada Water Authority, in a Monday interview. “That is not going to balance the system. This is a system-wide problem. It requires system-wide solutions.”
Lawyers for the Colorado River Commission of Nevada, the water authority and the state as a whole requested an injunction to halt implementation until federal documents can reflect the toll water cuts would have on Southern Nevada’s $180 billion economy.
“This shortfall will cause devastating environmental, socioeconomic, and health and human safety impacts to southern Nevada and its citizens,” attorneys wrote. “Federal Defendants failed to consider such impacts in any meaningful way.”
While 2027 and 2028 will see allocation cuts that the Lower Basin states of Nevada, California and Arizona have already agreed to, the years 2029 to 2036 could bring much harsher reductions. Entsminger said he felt it was important for Nevada to have its own representation on the issue, but he added he would be surprised if California and Arizona don’t sign on to the lawsuit, considering officials remain aligned in their positions. No mandatory cuts will be imposed on the Upper Basin states of Colorado, Utah, New Mexico and Wyoming. Entsminger submitted a letter to all six Colorado River basin states Monday, saying the state’s decision to sue wasn’t made lightly but that “hiding from reasonable legal interpretations in order to defer hard political decisions helps no one over the long term and further endangers our shared resource.”
Map of the Colorado River drainage basin, created using USGS data. By Shannon1 Creative Commons Attribution-Share Alike 4.0
Earlier that same day, the Department of Interior had issued its record of decision about how it would manage the key dams and hence the river during the two water years beginning in October. This came after Colorado and the six other basin states had failed during two years of negotiations to agree about how to share diminished river flows.
As even schoolboys in Kentucky likely know, the Colorado River has encountered severe problems since 2000. Flows in the river are down 20% and continuing to decline in direct proportion to rising temperatures. The two big reservoirs, Mead and Powell, have declined 75% in stored water.
The lower-basin states, which get their water from these two big reservoirs, had already cut their use significantly. The Department of Interior has ordered the three states to expect 1.25 million acre-feet less water from Mead during the next two years. It also expects the three states to figure out how to store 700,000 acre-feet over the next two years. Colorado and other upper basin states cannot expand water use.
Agriculture users, said Udall, will bear the brunt of these cutbacks. Municipal users — all the cities from Colorado’s Front Range to southern California get water from the river and its tributaries — will have to chip in with water savings. Infrastructure limitations of the two big dams, Hoover and Glen Canyon, when holding little water need to be resolved. For example, penstocks [river outlet tubes] on the two big dams were never designed for day-in, day-out use, as may be necessary with reduced amounts of water. And as for the hydroelectric production? Yes, it’s a small amount but important. It provides backup power.
The process created by the Interior Department — the Bureau of Reclamation is the key agency within Interior — requires new plans every two years for the next decade. Udall sees merit in this approach.
“When the negotiations started, the idea was that we’re going to get a 20-year plan. We got five two-year plans, which you might see as a setback, but I think we might have blundered into something actually useful, because it potentially is true adaptive management, where people get to pay attention repeatedly as this evolves.” [ed. emphasis mine]
Udall also sees strong dynamics producing solutions.
“I think we’re going to see a solution because the people who are involved in the negotiations are hard-working. They’re knowledgeable. They’re intelligent. They have super good relationships with each other. And they know that the chips are down. If they don’t solve it, the solution Mother Nature provides will be downright ugly. I think we will solve this. I actually do.”
When the breakthroughs will occur, Udall said he didn’t know. And he hedged his confidence with caution. “I won’t put bets on this.”
What is clear, though, is that Arizona will be key to solving the conundrum of 21st century flows being far less than 20th century expectations. The river in the last century average 15.2 million acre-feet. Even when it carried healthy volumes of water, though, the river had ceased to reach an embayment of the Pacific Ocean. Flows this century have declined and, since 2020, remarkably so: to an average of just 10 million acre-feet.
Flows will almost certainly decline further. Accumulating greenhouse gas emissions guarantee continued warming, producing reduced flows.
“Western water law is enormously complicated and really inhibits solutions,” he said. “We’ve made a whole bunch of policy mistakes through time, including permanent allocations, assuming way too much water, and enforcing or legalizing really unrealistic policies.”
Whether the framework created by the federal government for finding solutions will work, he said, will depend upon hydrology. In some circles optimism remains that the strong El Niño this year will produce improved precipitation and hence greater flows. And maybe it will, said Udall, but the record on flows during El Nino years has been all over the scattergram. A few very big years — 1983 and 1998 stand out — yes. But some real duds, too. In other words, this coming winter could conceivably be as bad as the past winter. Or, if not as bad, then will continue the downhill slide.
Now rewriting the rules
Udall also made the point that prior agreements were incremental in nature, unlike what the new federal rules represent.
“The rules in 2007 and 2019 were really hard fought, but they were incremental. They were truly incremental. What we’re looking at right now, it’s not incremental. It’s a complete rethink,” he said.
“I think people mistakenly thought that, given the successes in 2007, 2019, we would just kind of waltz our way to new rules. And I think that’s the wrong way to think about what’s going on. This is a really a different deal in 2026.”
This new paradigm imposed by the federal government, Udall went on to say, is the “first global instance where climate change is forcing a complete redo of water management. I think I can make a pretty good case for that.”
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
Udall has become well known at water meetings in Colorado and beyond, particularly during the last decade, in warning that communities and economic sectors dependent upon the Colorado River were headed for trouble. Climate change is water change, he began saying more than 20 years ago. And in 2014, he conducted research along with another scholar, Jonathan Overpeck, that showed the strong correlation between rising temperatures and reduced flows in the river. That science, he said, has strengthened.
Although living in Boulder, Udall in recent years has been affiliated with Colorado State University’s Colorado Water Center. There, he wears the title of senior water and climate research scientist/scholar.
However, Udall is also understood in terms of his family tree. He is a descendant of John D. Lee, the Mormon settler for whom Lee Ferry (also called Lees Ferry) is named. Located in Arizona, near the Utah border, it divides the Colorado River’s upper and lower basins.
Don’t make too much of being a John D. Lee descendant, he said. “He had 21 wives that we know of, and some have suggested he has 800,000 descendants. That might actually be part of the problem with the Colorado River.”
Ken Sleight the original Monkey Wrencher photo via Salon
As for his personal familiarity with the river, Udall divulged that he has rafted the Grand Canyon 45 times, at least some of those in the employ of Ken Sleight, best understood by readers of Edward Abbey’s “Monkey Wrench Gang” as the model for Seldom Seen Smith.
Arizona’s role
In Udall’s view, Arizona is central to solving this 21st century problem. The Central Arizona Project will “see a whole lot less water, but it’s not going to zero. I don’t know quite how that gets revolved, but that’s just so clear,” he said.
The Central Arizona Project delivers water from the Colorado River through 336 miles of canal to metropolitan Phoenix and ultimately Tucson, with farms along the way. It was authorized by Congress in 1968 and completed in 1993. Both his father, Morris, and his uncle, Stewart, were key figures in this. It can deliver 1.6 million acre-feet, the majority of the 2.8 million acre-feet that Arizona was scheduled to receive from the Colorado River under a 1964 court ruling.
As Udall pointed out, farms that got water from the project have received far less since cutbacks began in 2020. And now, more cuts for the farms — and cities — will be coming.
Given an hour for his presentation, far longer than his usual 20- or 30-minute slots, Udall had time to sketch some history, even taking time to define the universal way of measuring water quantities in the basin, the acre-foot.
“The reason that an acre-foot is used is farmers farm in terms of an acre,” he explained. “In the upper basin, you might put a foot or two feet of water on top of an acre to get a hay crop out. In the lower basin, near the Mexico border, you might put 10 feet of water on top of an irrigated field to get 10 different cuttings of alfalfa.”
Credit: The Land Desk
Thoughts about hay
Alfalfa came up in the Q&A. The question, in not so many words, was how to cut back water used to feed livestock. After all, agriculture uses about 75% of the water (after evaporation) in the Colorado River, and alfalfa and other feedstocks comprise a large portion of that. A full hour could have been devoted to that question — and likely left topics on the table. The tension inherent in this topic is revealed in how the Family Farm Alliance describes this push replace animal forage to crop switching: “crop shaming.”
“It’s easy to hate on alfalfa because people don’t eat it, but we kind of do, right? Dairy, ice cream, beef cattle. And the idea that you’re going to tell farmers not to grow alfalfa, which turns out to be a pretty good crop for them in their rotation, probably isn’t going to work very well. You’re probably far better off to say, ‘Hey, here’s your reduced allocation. You use it as you want,’” responded Udall
“I think most people in this room don’t care about corn. We very much care about alfalfa, and its water use, but I’m not sure trying to prohibit farmers from using a crop that’s key in their rotation and actually has some kind of interesting benefits is a suitable way to get there. “
Udall also mentioned the difficulties of crop switching.
“It’s been suggested that ag shift to higher value products that use less water. One way to do that is only grow stuff in the winter because growing in Yuma (Arizona) and Imperial (Valley) in midsummer is not a great idea. But when you ask a farmer to shift produce or products, you ask them to change marketing, you ask them to (change) labor, transportation, storage, equipment, knowledge. You ask them to change a lot of things, and arguably there’s a need to help this transition happen.”
This discussion, he concluded, is one that needs to be had but is very complicated. “It really is going to take a deep dive to figure out how to deal with this.”
You will be able to soon hear what Udall had to say (and see the slides he shared) at the Getches-Wilkinson Center’s site. The history lessons alone make it worth an hour.
A few other snippets:
• “The lower basin wants some contribution from the upper basin (in reducing use) maybe 5% or maybe 2%, but some kind of skin (in the game). And the upper Basin says no way. Until recently, the upper basin wanted to reserve the right to increase its use.”
• Our (Colorado delegate to the Upper Colorado River Commission) Becky Mitchell has recently been saying, you know, none of this gets us any extra water. And we need to move beyond this, and I applaud Becky for saying that.”
• Udall told a fascinating story about the Central Arizona Project. At the time the proposal for federal funding was before Congress, the Upper Colorado River Commission paid a Denver-based engineer to examine the numbers. That engineer’s conclusion: There’s not enough water for the Arizona project once the upper basin uses its full allocation (as defined in the Colorado River Compact of 1922). The number was 1.2 million acre-feet a year. And the two big reservoirs, Mead and Powell, have been losing 1.25 million acre-feet a year.
• The idea in 1968, said Udall, was that the federal government was going to figure out how to augment flows of the Colorado River. One of the ideas was to export water from the Snake River in Wyoming’s Jackson Hole to the Green River and hence the Colorado. Washington Sen. Henry “Scoop” Jackson and other members of Congress from the Pacific Northwest objected. And the augmentation that was part of the thinking never has happened.
Green River Basin
• On the first-in-time, first-in-right premise of Western water law. “You know, first-in-time, first-in-rank gets reinvented by 4-year-olds every day of the year throughout the world. I was here first; it’s mine. And most parents step in and say you’re going to share, right: But not Western water law. It was completely understandable in the 1800s, where you had a few users. But it’s really not so great in modern society. …
“You can’t have a case where 1,500 famers deprive 5 million people in Phoenix or 2 million people in the Front Range of water, of what I’ll call critical human water needs. It just isn’t going to work politically. Shared sacrifice would be a whole lot better way to deal with this.”
It’s pretty hard to cut back water use under Western water law, because if one user decides not to take water, the next user downstream can grab it. “If we’re trying to get water to Lake Powell, you have to rethink how this gets done.”
Colorado statewide annual temperature anomaly (°F) with respect to the 1901-2000 average. Graphic credit: Colorado Climate Center
• Temperatures have increased 3 degrees Fahrenheit since 1979. “Not a single year after 2000 is below the 20th century average,” he said of the Colorado River Basin. “Increased temps lead to increased evaporation. We think you can lose up to 5% flow (of water) per degree rise.”
Temperature increases have produced up to 15% increase in losses due to evaporation.
• As for precipitation, the last 27 years have been the worst 27 years since record-keeping began in 1895. The declines worsened beginning in around 2015.
A 1% decline in precipitation leads to a 2% decline in flows.
• As for Udall writing a book, as one audience member suggested, he said other authors have covered much of the same ground, even if he has a somewhat different angle. “I don’t know. I need an assistant!”
Brad Udall is pictured at Boulder Reservoir, which helps deliver water from the Upper Colorado River to the Front Range. Photo: Vance Jacobs/Colorado State University
The Bureau of Reclamation’s 10-year plan for managing Colorado River flows seeks to preserve enough water behind the Hoover Dam to sustain electricity generation. (Angus M. Thuermer Jr./WyoFile)
A federal drought plan for the Colorado River and its tributaries in Wyoming shouldn’t stop Wyoming from building a new dam and reservoir in Carbon County, two Western water experts say.
The Bureau of Reclamation plan for the sweeping basin focuses on maintaining enough water in Lake Powell and Lake Mead to generate electricity and prevent degradation of critical infrastructure, professors from Utah and Arizona said last week.
The 10-year framework to manage water storage and releases in the complex seven-state, two-nation system seeks to balance predictability and flexibility in two-year increments. It also acknowledges that the government has little to no authority over water use in headwater states Wyoming, Utah, Colorado and New Mexico, said Sarah Porter, the director of the Kyl Center for Water Policy at Arizona State University’s Morrison Institute.
“One way of reading the final environmental impact statement,” Porter said, “is the Bureau’s determination that it doesn’t really have any authority to limit water use in the headwaters.” [ed. emphasis mine]
A controversial dam proposed on the West Fork of Battle Creek, which flows into the Little Snake River, above, and the Colorado River could still be built despite a drought that prevents Lake Powell and Lake Mead from filling. (EcoFlight)
Drought will likely cause agricultural stress in Arizona, Nevada and California, threatening the supply of winter vegetables and possibly other crops, she said.
“We probably won’t be eating as many salads,” she said, because Arizona is where winter lettuce is harvested. “It’s all grown in Yuma.”
More important for Wyoming might be that the Bureau of Reclamation’s final environmental impact statement recognizes the independence of headwater, or upper-division, states to essentially use water as they see fit. Efforts to conserve water in the Upper Basin “are not within the scope of this EIS,” the federal document states.
So while farmers downstream may see their traditional supplies cut, Wyoming forges ahead with plans for the 10,000-acre-foot West Fork dam and reservoir in Carbon County where 6,000 acre-feet a year would be poured onto fields for late-season irrigation on ranches.
Energy equation
The Bureau is imposing the plan after the seven states failed to agree on how to share Colorado River flows as drought crimps traditional allotments that were based on too-rosy estimates.
“We have the lowest reservoir storage we’ve ever seen,” said David Rosenberg, a Utah State University professor and water researcher. “We have very low inflows.”
He and Porter spoke in a Zoom webinar hosted by SciLine, a nonprofit that connects reporters with scientists.
The two called the Bureau of Reclamation plan a decision-making framework for distributing water in the three Lower Basin states — initially for two years.
“It doesn’t place the basin on a path to stabilizing the system at all,” Porter said. “It doesn’t resolve conflict at all. It doesn’t achieve the [long-term] things that the basin really needs at this point.” [ed. emphasis mine]
The Colorado River Basin spans seven U.S. states and part of Mexico. Lake Powell, upstream from the Grand Canyon, and Lake Mead, near Las Vegas, are the two principal reservoirs in the Colorado River water-supply system. (Bureau of Reclamation)
But the plan is “a very clear statement,” Rosenberg said, “of how they’re going to protect infrastructure.”
That infrastructure includes the two major dams, associated power plants and canals that would become useless, even degraded, if the water levels in Powell and Mead drop below critical levels. With the plan, Rosenberg said, the Bureau states: “We’re still going to be generating hydropower.”
View below Flaming Gorge Dam from the Green River, eastern Utah. Photo credit: USGSBlue Mesa Dam. Photo credit: ReclamationThe outflow at the bottom of Navajo Dam in New Mexico. Photo: Brent Gardner-Smith/Aspen Journalism
Powell’s Glen Canyon and Mead’s Hoover dams can generate some $443 million of market-price electricity a year when operating fully, according to calculations from the Bureau of Reclamation and theU.S. Energy Information Administration. To keep those two reservoirs flush, the Bureau will release water from Wyoming’s Flaming Gorge Reservoir and from Colorado’s Blue Mesa Reservoir and New Mexico’s and Colorado’s Navajo Reservoir.
Beyond that, the Bureau’s plan targets the three Lower Basin states for reductions, depending on water in the river system and reservoirs.
Headwater states largely rely on stream and river flows determined by spring runoff. The at-risk region in Wyoming includes the Green River and its tributaries and the Little Snake River in Carbon County.
In contrast, the Lower Basin “gets all of its water, Colorado River water, from the reservoirs,” Porter said. It’s a lot more complicated to curtail Upper Basin use “than simply to not deliver water out of a reservoir,” she said. “And that’s a sore point with the Lower Basin.”
The two professors predicted a fight. “We expect they’ll be challenging this administrative process,” Porter said of the lower division states’ reaction to the Bureau’s EIS.
Compact call coming
There’s more on the horizon too.
“I also expect that within the next year and a half, or maybe two years, there will be what we call a compact call,” Porter said, “a demand from the Lower Basin for water that the Lower Basin contends the Upper Basin is obligated to deliver.
“That challenge will occur in the United States Supreme Court and that could take 10, 20, 30 years.”
Under the 1922 Colorado River Compact and associated agreements, the upper division states can’t diminish the flow from Lake Powell below 7.5 million acre-feet annually, calculated on a 10-year rolling average. That’s half what engineers originally calculated the watershed would produce; half belonging to the headwater states, half to the Lower Basin. That estimate is now considered to have been exuberantly optimistic. [ed. emphasis mine]
“We really need to figure out a way collectively to be reducing demand in the Colorado River by at least 3 million acre-feet out of the 15 million,” Porter said, “and that probably can’t all fall on the Lower Basin.
“The Lower Basin,” she said, “didn’t agree to be junior to the Upper Basin.”
If Upper Basin states don’t deliver the 7.5 million acre-feet past the Lee Ferry gauging station just below Lake Powell, headwaters curtailment will begin, starting with the most recent, or junior, water-right holders.
Until then, conservation in Wyoming will be voluntary, generally meaning that if an irrigator or other user forgoes their water right, they will need to be paid. In previous trial conservation programs, that has cost $500 an acre foot.
But a compact call by Lower Basin states would lead to curtailment — a mandatory cutting off of Upper Basin water use starting with the most recent, or junior, rights’ holders. Long-established ranches and irrigators hold senior rights while Wyoming municipalities and industries in the Green River Basin are likely among the first to be curtailed.
The proposed dam would be 264 feet high, 700 feet long and made out of concrete. (Major King for WyoFile)
Under the “Law of the River,” Wyoming has rights — on paper — to 14% of the Upper Basin’s 7.5 million acre-feet annually. That’s about 1 million acre-feet. But the state engineer estimated in 2010 that Wyoming’s rights amount to 847,000 acre-feet a year, according to the state’s 2010 plan for the basin. Wyoming uses 680,076 acre-feet and has rights to another 166,924, the latest plan states.
That makes the 100,000 or so Wyomingites who rely on or use Green River water relatively water rich compared to the 40 million down-streamers who rely on the river for some or all of their agricultural and municipal needs. In essence, 100,000 Wyomingites have rights to almost 1 million acre-feet while 39.9 million down-streamers divvy up 7.5 million acre-feet.
The implications go beyond the scarcity of your garden-variety salad.
“If there are big reductions in water supplies to those [Lower Basin] areas, there really will be impacts on our food supply nationally, not to mention other impacts,” Porter said.
Phoenix reclaims wastewater through a multi-step filtration process – settling, aeration, disinfection – turning it into clean water for parks, cooling, and natural restoration.
Recycling water
While the prospect of southwestern metropolises crashing headlong into ugly sewerage problems caused by the crisis would seem to loom, don’t put all your money into wag-bags and porta potties yet. The municipalities are figuring out how to cope.
“Those cities are making massive investments in advanced water purification to treat reclaimed water to potable to reduce reliance on annual deliveries of Colorado River water,” Porter said. “That access to other water supplies or other water management strategies isn’t really available to agricultural water users or, to a great extent, the tribes who are significant rights holders to Colorado River water.
“We may see impacts to cities really smoothed out and not be very disruptive,” she said. “If we do have disruptive impacts, they will probably fall on rural areas and tribal communities in the Lower Basin.”
And the existing plans and commitments, including a federal outline announced in late July 2026, don’t get close to achieving what’s needed to keep the river flowing. Here’s a look at the key issues making an agreement so hard to reach.
The Lower Basin states – Arizona, California and Nevada – have been using less water, even as their populations have grown.
They have proposed to further reduce water use in 2027 and 2028, and Mexico has, too. Those decreases, coming only from the Lower Basin states, would be the biggest-ever reductions of Colorado River water use, but they would amount to only about 3.7 million acre-feet over two years, about half what is likely needed.
If the winter of 2026-27 is like the winter the West had in 2025-26, the river and reservoirs will likely be at that point by mid-2027. A really good winter with lots of snow might push the timing out a year or two, but it won’t solve the problem: People are using a lot more water from the reservoirs than nature is replenishing each year with rainfall and snowfall.
The other key problem is evaporation. These massive reservoirs are in a hot, dry region. The U.S. Geological Survey estimates that annual evaporation is about 1.5 million acre-feet. That’s about 10% of what the seven states expect to be able to use each year – and about half of the overall cuts in water use that would be needed to keep the river flowing.
Even if sufficient water were released from Lake Powell to Lake Mead to cover the Lower Basin’s and Mexico’s apportionments, Lake Mead would continue to decline because of evaporation.
What would deep cuts mean for people?
Farmers and ranchers in the Upper Basin have had less water available in 2026 because the winter was extraordinarily dry.
But if water levels at Lake Powell and Lake Mead fall too low to allow dam managers to release stored water, the effects would be on the Lower Basin.
Entities that receive water from the Central Arizona Project have junior priority in the Lower Basin. Central Arizona cities have years’ worth of groundwater they could access – not a forever supply, but enough to use for some years while they work on developing new water supplies.
If cuts go deeper, tribal and nontribal agriculture along the main stem would arguably take the hardest hit. They may have higher-priority rights, but if there’s no water they’re still in trouble. And there isn’t an alternative water supply for agriculture along the river’s main route.
Across the nation, people would notice higher costs and limited availability of some produce, especially in the winter. At times of year when those crops can’t grow in colder parts of the country, Yuma County, Arizona, and Imperial County, California, are key suppliers of vegetables. Other products would be affected too, including Desert durum wheat, a high-gluten wheat that is preferred for pasta.
What would those cuts mean for electricity?
The federal Bureau of Reclamation has made clear its commitment to continuing hydropower production by keeping reservoir elevations above the minimum level needed to generate electricity.
As a result, the reservoirs will likely not reach the point called “deadpool,” at which no water can move through the dam. But they may reach levels at which no water beyond what’s required to generate power – or what arrives as rain or snow – would flow downstream.
What are the states’ positions?
The Lower Basin states have said they would reduce water use by 1.6 million acre-feet a year, effectively handling the reduction due to evaporation. But the Lower Basin has remained insistent on the Upper Basin states’ sharing in additional conservation measures.
Without a negotiated way forward, there are two potential legal fights on the horizon, which could happen at the same time.
One is a Supreme Court fight over how to interpret the Colorado River Compact. It tends to take about a decade to resolve interstate water-sharing fights in the Supreme Court. If that happens, the region will face years of uncertainty regarding the amount of water available to different users.
At the same time, negotiators, tribes and others in the Lower Basin have made clear that they don’t agree with the approach to the crisis the Bureau of Reclamation announced in late July 2026. The specifics of how that plan will be carried out have not yet been released, but Arizona and Nevada have already threatened to sue.
I think it’s going to require federal leadership. In the 1930s a national effort set out to improve farming efficiency all around the nation, but especially in the South and West. Under the Bankhead-Jones Act of 1937, the federal government bought millions of acres of marginal farmland to take it out of production.
Farming is important, but not every acre of farmland should stay in production. If it’s a choice between making sure some water goes to cities or keeping every possible acre of farmland irrigated, we have to be able to discuss both options.
Becky Mitchell, Colorado member of the Upper Colorado River Commission, speaks to PBS News about the fight for Colorado River water near the banks of the river in Grand Junction on Aug. 19, 2026. (Screenshot via YouTube/PBS News)
The future of the Colorado River is looking bleak, and officials in the seven states that depend on its water say they’re happy to negotiate — but with current use rules expiring at the end of the year, compromise seems unlikely.
During a more than two-hour PBS special on Wednesday, officials from the Upper and Lower basins, as well as farmers and water experts, painted an alarming picture of a shrinking river without enough water to meet legal allocation obligations set more than 100 years ago.
The Colorado River is a vital source of drinking water for 40 million people in the seven states, Mexico and 30 Native American tribes, and it provides water for farming operations and hydroelectricity.
The Lower Basin states — Arizona, Nevada and California — and the Upper Basin states — Colorado, New Mexico, Utah, and Wyoming — have been attempting to negotiate an updated water usage agreement for more than two years. So far, they’ve been unsuccessful.
Because of the negotiating impasse, the federal government has devised a plan to replace the agreement that expires at the end of the year. It will impose drastic cuts on the Lower Basin states, and Arizona will feel the brunt of those cuts with a cut to its river water of up to 77%.
Arizona faces an outsized burden when it comes to reductions because the Central Arizona Project, a series of canals that supplies Colorado River water to the metropolitan Phoenix and Tucson areas, is one of the newest users of the river water, making it legally one of the first to be cut.
The major sticking point in the negotiations is the Upper Basin states’ refusal to commit to any mandatory cuts, while the Lower Basin states already take cuts in dry years.
Becky Mitchell, Colorado’s water commissioner, said that her state already deals with mandatory cuts, they’re just from Mother Nature, not the U.S. government. The Colorado River is fed by melting snowpack in the Rocky Mountains, which is at a record low this year.
“What I can’t promise is to deliver water when it’s not there,” Mitchell said. “Nobody can.”
She characterized the Lower Basin states’ argument that the Upper Basin wasn’t taking mandatory cuts as a “major flaw,” since the Upper Basin uses anywhere between three to five millions acre-feet per year, based on what’s available.
An acre-foot of water is enough to cover an acre of land to a depth of one foot, or about 325,851 gallons. That’s enough to provide three homes in Arizona a year of water, on average.
Mitchell said the cuts from Mother Nature are “far more fierce than the federal government will ever be,” putting farmers on the western slope of the Rockies at risk of going out of business.
And while those in the Upper Basin balk at the swimming pools and golf courses in the middle of the desert that are prevalent in urban centers of Arizona and Nevada, municipalities account for only about 25% of the Lower Basin’s water use.
Agriculture accounts for the other 75%. Andrea Travnik, assistant secretary for water and science at the U.S. Department of Interior, dodged a question from PBS about whether the federal government would contemplate putting restrictions on water use for farming, which would be incredibly politically unpopular.
Travnik said that the federal government has already worked with the states to raise water levels in Lake Mead through conservation efforts, and will continue to push for conservation, in addition to other solutions like desalination — which is extremely expensive — and water reuse.
But Brad Udall, a water and climate scientist at Colorado State University, said that if the 1,500 farmers that depend on Colorado River water for their crops are pitted against the 5 million people in metropolitan Phoenix and the 18 million people in the greater Los Angeles area, the winner will be obvious.
Udall thinks the states need to ditch the outdated 1922 Colorado River Compact, which allocated 7.5 million acre-feet for each basin, and was based on a faulty model that assumed the river system could supply 15 million acre-feet annually. While use agreements have been updated numerous times since then, the allocations to each basin remain the same.
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
The region is in the midst of a 20-year mega drought that is wreaking havoc on the river. Since 2000, flows in the Colorado River have decreased by 20%. And since, 2020 flows are down 35%.
After negotiations with the Upper Basin were unfruitful earlier this year, the Lower Basin states in May offered their own proposal to reduce their shared usage by 1.25 million acre-feet annually in 2027 and 2028, with about a 30% cut for Arizona.
This proposal was aimed at helping to stabilize water levels in Lake Powell and Lake Mead, the system’s two key reservoirs, whose water levels fell this month to their lowest point since 1957.
Udall described both reservoirs as just above deadpool, the point at which water drops too low to flow past a dam by gravity.
“Deadpool is a point where you lose control of the reservoir,” he said. “Mother Nature controls what happens. It controls what comes in. It controls what you send out the bottom.”
Reaching deadpool would turn those reservoirs into nothing more than concrete basins where water evaporates, Udall said.
“It’s kind of hard to overstate the consequences of losing those water bank accounts for the states that rely on it in the Lower Basin,” he said.
While Mitchell said that the Upper Basin couldn’t guarantee its 7.5 million acre-feet delivery of water to the Lower Basin, it would attempt to prevent the reservoirs from reaching deadpool.
Tom Buschatzke, director of the Arizona Department of Water Resources, said that the basins could come to an agreement today, if the Upper Basin would agree to take a 2% mandatory cut of its annual available water supply, or about 100,000 acre-feet in a year with 5 million acre feet available.
Mitchell did not say she would agree to those cuts, saying that the Upper Basin states are already managing their water responsibly.
But Arizona and the other Lower Basin states have undertaken significant conservation efforts for Colorado River water since 2014 and have reduced their consumption from 7.4 million acre-feet in 2015 to just over 6 million in 2024, adding 165 feet of water to Lake Mead.
All of the water officials who participated in the PBS special said they would prefer to hammer out a compromise instead of going to court, but that they were committed to protecting their water rights.
In March, Arizona retained the high-powered law firm Sullivan & Cromwell to represent the state in possible litigation among the Colorado River Basin states and the federal government.
Kathryn Sorensen, director of research at the Kyl Center for Water Policy at Arizona State University, said that while the fight for Colorado River water has become “existential” because of overallocation, Arizonans shouldn’t panic yet.
Even if the Central Arizona Project goes dry, she said, Phoenix still has banked groundwater and the Salt and Verde rivers to fall back on. Sorensen said she doesn’t expect municipal water shortages, but she does predict higher water bills.
The Trump administration’s draft “preferred alternative” plan for the river, released last month, could reduce the Lower Basin’s allocation by 3 million acre-feet per year, slashing Arizona’s water supply from the river by more than 75%. But there’s still a possibility that the federal government could implement the Lower Basin’s proposal for smaller cuts instead.
The federal government’s new river usage rules, which are still being negotiated, will be released later this year.
Udall said that the U.S. is totally failing to address the overall cause of the river’s decline.
“There’s a whole bunch of scientific studies that suggest that this is very much human-caused,” Udall said. “It’s due to our greenhouse gas emissions and the warming of the earth right now.”
This story was originally produced by Arizona Mirror, which is part of States Newsroom, a nonprofit news network which includes Colorado Newsline, and is supported by grants and a coalition of donors as a 501c(3) public charity.
Colorado Newsline is part of States Newsroom, a nonprofit news network supported by grants and a coalition of donors as a 501c(3) public charity. Colorado Newsline maintains editorial independence. Contact Editor Quentin Young for questions: info@coloradonewsline.com.
For Mead and Powell, fresh record lows. Data: USBR; Graph: Jack Schmidt
Click the link to read the article on the InkStain website (Jack Schmidt and John Fleck):
August 7, 2026
When Lake Mead’s elevation crossed the threshold of 1,040 feet above sea level in the spring of 1937, stretching upstream 100 miles behind Hoover Dam in the deserts of the Arizona Nevada border, it was national news.
So much water!
Kerrville Times, Kerrville Texas, May 13, 1937
As Mead drops past that threshold in the opposite direction in the summer of 2026, it’s telling a different story. So little water.
Two milestones in the last few days are worthy of note. The first is Lake Mead itself, which in the last two days dropped past the previous lowest levels in history set in 2022, meaning it is now the lowest it has been since the reservoir was first filled in the 1930s.
Lake Mead was at 7.012 maf yesterday (Aug. 6, 2026) (1040.5 ft). The previous record low was 7.018 maf (1040.58 ft) that was set on July 28, 2022. Thus, yesterday’s reservoir contents in Lake Mead are the lowest since at least May 1937.
Meanwhile, Lake Powell is now 85,000 af (1.51 ft) above its lowest historical amount since it was first filled in the 1960s.
But that does not fully capture the extent of the crisis. Total reservoir contents of all 46 reservoirs in the Reclamation data base (extending from Fontenelle and Grand Lakes to Lake Havasu) was at 21.27 maf on July 1, the lowest since at least May 29, 1965 (probably earlier, since the Reclamation data base doesn’t report many reservoir contents at that early date).
The vultures didn’t wait long to feed on the carrion of shrunken national monuments. Within days of President Donald Trump’s order slashing nearly 3 million acres from Bears Ears and Grand Staircase-Escalante National Monuments, mining claims were filed within the former boundaries of both monuments with San Juan County and Kane County, respectively.
While Trump’s shrinkage did reopen that land to new mining claims and mineral leasing, it does not go into effect until Sept. 11, 60 days after the proclamations were issued. The claims have not officially been recorded with the Bureau of Land Management.
On July 14, Kimmerle Mining LLC out of Moab filed seven claims just within the eastern border of what had been Bears Ears National Monument just two days earlier. A few weeks later, Charles Rosequist filed two claims in the southwest corner of the GSENM, near Kaibab Gulch and the Vermilion Cliffs.
Kimmerle Mining, its principal Kyle Kimmerle, and other family members hold dozens of mining claims across southern Utah and western Colorado uranium country. The family firm became known for staking claims in what would become Bears Ears National Monument leading up to its designation, and for locating more after Trump’s first national monument shrinkage in 2017.
Just before Biden restored the boundaries in 2021, Kimmerle Mining staked five new claims within the national monument and acquired additional claims from another firm in the historic White Canyon mining district. Kimmerle Mining promptly filed for a permit to do exploration work there, but the BLM said they had to demonstrate the claims’ “validity,” or show that they contained “valuable minerals.” The process for doing so would cost up to $100,000. Shortly thereafter, Kimmerle joined the state of Utah’s lawsuit seeking to eviscerate the national monument, claiming that its establishment had caused him to lose out on mining profits.
And, in 2018, the Kimmerle family staked the Easy Peasy claims in the Cottonwood Wash drainage in what had been Bears Ears National Monument. The new claims are adjacent to those, in the Cheese & Raisins Hills area, which was mined historically for vanadium and uranium. The Shumway brothers staked claims there back in the 1930s, including the Big Hole Mine, and the ruins of an old vanadium mill are still visible nearby.
Remnants of a historic vanadium processing plant in the Cottonwood Wash drainage near where Kimmerle Mining filed seven mining claims in an area removed from Bears Ears National Monument. Jonathan P. Thompson photo
Whether the firm plans to mine the claims, or is just looking for more grounds for a future lawsuit in the event that the next administration restores the boundaries isn’t clear. They have been known to use mining claims to make political points: Late last year, Kimmerle Mining staked four 20.66-acre lode claims on the east slope of the Henry Mountains, naming them Trump I, Trump 2, Trump 3, and Trump 4.
Also in the shady mining moves around national monument shrinkage: Less than a week before Trump issued the proclamations, Energy Fuels CEO Ross Bhappu purchased 74,000 shares of the uranium mining and milling firm’s stock, and the company’s chairman Bruce Hansen bought 4,000 shares. Democratic lawmakers on the House Natural Resources committee are now investigating the trade and the possibility that the executives received privileged, non-public information from the Trump administration in advance of the shrinkage.
Energy Fuels owns and operates the White Mesa uranium mill in San Juan County, Utah, east of Bears Ears National Monument. The company lobbied the Obama administration prior to its original 2016 designation. Though the administration ultimately excluded Energy Fuels’ Daneros mine from the monument, the firm lamented the fact that seven miles of the mine’s one access road still fell within the boundaries.
In 2017 Energy Fuels lobbyists, including former U.S. Rep. Mary Bono, R-Calif., met with Trump administration officials, and requested that it “reduce the size of the (Bears Ears National Monument) to only those specific resource areas or sites, if any, deemed to need additional protection beyond what is already available to Federal land management agencies.”
In 2021, IsoEnergy acquired the Daneros Mine and other mining properties from Energy Fuels. But any ore mined in the former Bears Ears is likely to be processed at Energy Fuels’ White Mesa mill, so they stand to benefit from the shrinkage.
⛈️ Wacky Weather Watch⚡️
It wasn’t exactly a hurricane that hit Hurricane, but it was pretty darned destructive. This past weekend a huge storm pounded southwestern Utah, leading to arroyo-busting flash floods that turned the city’s streets into rivers of mud. The water gave a big boost to the Virgin River, which shot up from about 165 cubic feet per second to over 4,000 cfs in a matter of hours.
🐟 Colorado River Chronicles 💧
Lake Powell reached a grim benchmark this past weekend, when its surface elevation dropped to its lowest level since 1968, when the nation’s second largest reservoir was still filling up. In April of 2023, the level fell to 3,519.92 feet. On August 15 of this year, it reached 3,519.91 feet and is still falling at a rate of about two inches per day.
While not exactly surprising, the event launched many a news story in the mainstream media. And as is often the case with complicated issues like these — and the Glen Canyon Dam problem is not exactly simple or straightforward — some of the facts in these stories can be a little less than factual, and could use a bit of clarification.
The graphic showing reservoir levels at Lake Powell says that at 3,370 feet, known as dead pool, “Water no longer flows past the dam.” As Zak Podmore — who wrote the book on Lake Powell and deadpool — pointed out on X-Twitter, that is not quite right. What actually would happen is that the dam would become a run-of-the-river facility, meaning water released from the dam would be equal to water flowing into the reservoir (minus losses from seepage and evaporation). So the Grand Canyon would not go completely dry, though there would be times when flows are pretty darned low.
The piece notes: “About 6 million people across the Southwest rely on electricity from the dams [both Glen Canyon and Hoover].” This isn’t wrong, it’s just worded in a way that overstates the importance of these generators’ energy output to the Western power grid. Combined, the dams produce enough electricity annually to power some 550,000 households for a year. That power is sold at cost to municipalities, cooperatives, tribal nations, irrigation districts, and utilities across the West, which include it as part of their larger portfolios. The 6 million figure probably refers to all of the customers all of those entities serve; if the dams go down, these folks most likely wouldn’t notice except for a small jump in their power bills.
Humpback chub. National Park Service illustration by Joe Tomelleri.
Protect the Grand Canyon’s Humpback Chub A guest dispatch by Ron Rudolph
This month Lake Powell will shrink to a level last seen in 1968, a few months before the first astronauts orbited the Moon. The receding reservoir has forced the Bureau of Reclamation to abandon the practice of releasing cool water from the reservoir, a strategy used successfully to prevent smallmouth bass from becoming entrenched in Grand Canyon National Park below Glen Canyon Dam.1 The bass are an invasive species that can escape from Lake Powell and could imperil the Grand Canyon’s native humpback chub population, the most important remnant of a federally protected species that was once widespread throughout the Colorado River system.2 Scientists attribute steep declines in the humpback chub population in the upper Colorado River Basin largely to smallmouth bass predation.3
Sustaining the humpback chub population in the Grand Canyon is essential to prevent the species’ extinction. With cool water releases no longer feasible, protecting the humpback chub now requires a different approach. Increasing the delivery of sediment into the Grand Canyon may be the most effective remaining tool. Additional sediment transported from Lake Powell, either around or through Glen Canyon Dam, would increase turbidity, making it more difficult for smallmouth bass to establish a stable population.
The Bureau’s decision to halt cool water releases reflects the severity of the ongoing drought, which has reduced this year’s unregulated flow of the Colorado River to the second lowest since Glen Canyon Dam was completed 63 years ago.4 In April, the agency instituted unprecedented efforts to bolster Lake Powell, which were intended to preserve Glen Canyon Dam’s ability to generate hydropower.5 Despite those efforts, the Bureau’s July 24-month forecast of the minimum probable flow of water into Lake Powell anticipates Glen Canyon Dam will be unable to generate electricity from February 2027 through at least June 2028.6 In fiscal year 2025, Glen Canyon Dam generated enough electricity to supply the annual average needs of 269,000 U.S. households.7
Humpback chub evolved exclusively in the Colorado River system, the water often referred to as “too thick to drink and too thin to plow.” It developed exquisite adaptations to thrive in a volatile environment, driven by flash floods that can rapidly turn relatively clear water to an opaque reddish-brown, making it impossible to see one’s finger one inch below the surface. Its gills and mouth have protective flaps that prevent sediment from clogging them, its eyes are tailored to see in muddy water, and special sensory organs detect prey and plants, allowing the fish to breathe and eat in highly turbid conditions. In contrast, smallmouth bass evolved in clear lakes and streams, relying on their vision to obtain food.
Fortunately, the adult humpback chub population is flourishing in the western Grand Canyon where sediment from the annual monsoon season turns the river into a torrent of mud. From 2010 to 2024, the population grew about 160-fold, with the median population estimated at about 70,000.8 This resurgence caused the U.S. Fish and Wildlife Service to reclassify the species from being endangered — i.e., in imminent threat of extinction, under the Endangered Species Act — to a less serious status of threatened.9
Smallmouth bass were not present in the Grand Canyon prior to the construction of Glen Canyon Dam, but now occur occasionally in its western section. The largest smallmouth bass captured in the park – 15.2 inches – was found in the far western section of the Grand Canyon in 2006.10 The fact that humpback chub flourish in the western Grand Canyon while smallmouth bass do not underscores the importance of intense and sustained pulses of turbidity created by suspended particulates. These conditions appear to be a key factor in preventing smallmouth bass from becoming established.
Because Glen Canyon Dam traps most sediment before it can reach the Grand Canyon, the Bureau should commission a study to evaluate options for increasing sediment delivery from Lake Powell. A sediment bypass system, such as a pipeline around or through the dam, could provide the turbidity needed to suppress smallmouth bass in the absence of cool water releases. Given current hydrologic realities, such an approach may be the most effective long‑term strategy for protecting the humpback chub and preserving the ecological integrity of the Grand Canyon.
1 “Feds Nix Grand Canyon fish protection flows below Lake Powell,” Arizona Republic, August 7, 2026
2 Glen Canyon Adaptive Management Program — https://gcdamp.com/index.php/ Smallmouth_Bass_Page
3 U.S. Geological Survey, “Dropping the Bass: USGS science helps partners stop spread of invasive smallmouth bass in the Colorado River,” March 21, 2025
4 The Bureau of Reclamation’s July 2026 “Most Probable” 24-Month Study projects unregulated inflow for this water year at 3.501 million acre-feet. 2002 is the driest on record at 2.64 MAF
6 Bureau of Reclamation, July 2026 Probable Minimum 24-Month Study; https://www.usbr.gov/ lc/region/g4000/24mo_MIN.pdf. When Lake Powell drops below elevation 3,490, it can no longer generate hydropower. See Bureau of Reclamation, Final Environmental Impact Statement, Post-2026 Operational Guidelines and Strategies for Lake Powell and Lake Mead, Technical Appendix 15, Dams and Electrical Power Resources, page 15-11
7 In Fiscal Year 2025 Glen Canyon Dam generated 2,792,000,000 kilowatt-hours of electricity, according to the Western Area Power Administration’s Statistical Index — https:// http://www.wapa.gov/wp-content/uploads/2026/06/FY-2025-Statistical-Appendix.pdf, page 9. According to the U.S., Energy Information Administration, U.S. households use an average of 10,365 kWh annually. https://www.eia.gov/tools/faqs/faq.php?id=97&t=3; avg monthly consumption 863; annual 10,365 kWh EIA https://www.eia.gov/electricity/ sales_revenue_price/pdf/table_5a.pdf
8 Dzul et al., “Integrating mark-recapture, catch, and expert habitat assessments to quantify recent increases in humpback chub abundance over a 200 km long river segment of the Colorado River in western Grand Canyon,” Canadian Journal of Fisheries and Aquatic Sciences, July 2026. Dzul estimated with 95% confidence that the population was between 40,000–200,000
Department of the Interior releases Operating Guidelines and Record of Decision for the Colorado River. Photo credit: USBR
Click the link to read the release on the USBR website:
August 21, 2026
The Department of the Interior issued the 2027-2028 Operating Guidelines and the Record of Decision for the Post-2026 Colorado River Operations Final EIS, establishing a 10-year Decision Framework with a broad operational range that will be used to develop future operational guidelines for Lake Powell and Lake Mead. Together these decisions provide for reliable operations of the Colorado River system, delivery of vital water supplies, and protect critical federal infrastructure while preserving the flexibility necessary to respond to Basin states’ voluntary actions, consensus recommendations and the continued prolonged drought. The combined contents of Lake Powell and Lake Mead have not been this low since before Lake Powell began filling following the closure of the gates at Glen Canyon Dam in 1963, with both Lake Powell and Lake Mead hitting record lows the last few weeks.
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
“We are grateful for the Seven Basin States, the thirty Basin Tribes, Mexico, and many other basin stakeholders who have provided the feedback and voluntary arrangements necessary for the development of the 2027-2028 Operating Guidelines.” said Secretary of the Interior Doug Burgum. “Forty million people, millions of acres of farmland and ranchland, industries that power the American West, and some of our nation’s fastest growing metropolitan areas depend on the Colorado River.”
The 2027-2028 Operating Guidelines respond to hydrologic conditions and provide flexible tools to protect critical infrastructure at Glen Canyon Dam and Hoover Dam. They were developed after extensive engagement with the seven Basin States and incorporate concepts from proposals from both the Upper and Lower Basins and Basin tribes.
These 2027-2028 Operating Guidelines:
Provide objective criteria to determine releases from Lake Powell based on actual hydrology and maintaining a minimum elevation of 3,510 feet to support continued operational reliability at Glen Canyon Dam.
Provides for reductions in deliveries of Colorado River water among the Lower Basin States of 1.25 million acre-feet in each year of the next two years. If the Lower Basin States implement their proposed sharing agreement, the reduction per State would be:
Arizona: 760,000 acre-feet
California: 440,000 acre-feet
Nevada: 50,000 acre-feet
Provide for Lower Basin States to voluntarily conserve and store at least 700,000 acre-feet of water over the two-year period to protect the system, in addition to the 1.25 million acre-feet per year of reductions.
Provide for the Upper Basin States to enter into an agreement, in consultation with Lower Basin States and Basin tribes, using the Secretary’s authorities to operate the Colorado River Storage Project Upper Initial Units (i.e. Aspinall (CO), Flaming Gorge (UT/WY) and Navajo (CO/NM) Reservoirs) to help protect Glen Canyon Dam infrastructure.
Provide tools and flexibility in the Lower Basin to respond to drought conditions by allowing water users to store water.
Provides for a Federally managed pool to help meet tribal firming obligations and provide limited offsetting to reduce tribal impacts.
Provide elevation triggers for coordination and consultations to determine additional actions, if necessary, to minimize operational risks to infrastructure, and manage risks to the urban, agricultural, and natural systems that rely on the Colorado River.
Reclamation also released today the August 2026 24-Month Study, determining the 2027 operations based on the new guidelines. Lake Powell will begin the October 1 water year between elevations 3,540 and 3,510 feet, placing operations in the Lower Elevation Infrastructure Protection Range with an expected water year release between 6.0 and 7.0 million acre-feet. Reclamation will begin the water year with lower releases between 6.0 and 7.0 million acre-feet in order to attempt to maintain an elevation of 3,510 feet or higher and will adjust releases through April to continue to maintain elevation 3,510 feet. The water year 2027 release volume will be determined in April. For Lake Mead, water deliveries to the Lower Basin States will be reduced by 1.25 million-acre feet for calendar year 2027.
The Decision Framework establishes an operational range that provides the flexibility to develop specific operating guidelines within the 10-year period while preserving the opportunity for Colorado River Basin negotiations to continue and, if successful, be incorporated into years three or four or longer for future operational guidelines. Operational elements include enhanced coordinated reservoir operations and expanded opportunities for the storage and delivery of conserved water in system reservoirs and other flexible water management tools. The Decision Framework prioritizes consensus agreements, voluntary actions, and a commitment to coordination and consultation throughout the period of adoption.
The Decision Framework anticipates operating guidelines in two-year periods and can be scaled longer depending on evolving Basin circumstances. This mechanism leaves room for the Basin States, tribes and stakeholders to adjust these parameters with their own voluntary actions and consensus whenever such agreements are reached.
“These decisions provide a water management strategy for Basin stakeholders to respond to the prolonged drought by incorporating flexible tools and voluntary actions while leaving room for consensus agreements,” said Assistant Secretary — Water and Science Andrea Travnicek. “The Department and Reclamation will continue to work with all Basin stakeholders to identify areas to maximize efforts throughout the Basin to modernize infrastructure, develop conservation programs, and identify innovative approaches to deliver water under changing conditions”.
Since the beginning of the Trump administration, President Trump has made delivering water to people a high priority. The administration has demonstrated a commitment to improving and enhancing water supply within the Colorado River Basin through investments in water storage, distribution, treatment, and improving water efficiency. Specifically in the Lower Basin investments over $3 billion have been made since January 2025.
In April 2026, the Secretary asked for feedback from the seven Basin States on potential water supply and conservation projects throughout the Colorado River Basin during a time of shortage. The administration continues to review the submittals and will work with the Basin States and Basin Tribes to identify opportunities to use available Working Families Tax Cuts funds, and other federal cost-share programs related to water storage and expansion and optimization; desalination and advanced water treatment; and water movement, exchanges and infrastructure.
Background
The NEPA process was initiated in June 2023. Over this three-year period the Department of the Interior and Bureau of Reclamation engaged extensively with Basin stakeholders and that input is reflected in the alternatives analyzed in the Final EIS and the Preferred Alternative of a Decision Framework that would guide future operational guidelines, released on July 31, 2026. The 2027-2028 Operating Guidelines and ROD released today further incorporate extensive feedback from Basin stakeholders. The Final EIS, ROD and 2027-2028 Operating Guidelines are available on Reclamation’s website.
For the past 26 years, the Colorado River Basin has been experiencing an unprecedented multidecadal drought, resulting in historically low runoff and reservoir levels. Conditions worsened during 2026, driven in part by the lowest observed snowpack on record during the winter of 2025-2026. Last week, Lake Mead reached a record-low elevation, highlighting the need for flexible operations that can respond to rapidly changing conditions across the Colorado River Basin.
A separate binational process addressing water deliveries to Mexico is nearing completion and the Department is committed to continued collaboration with Mexico. The Department will conduct all necessary and appropriate discussions regarding post-2026 operations and implementation of the 1944 Water Treaty with Mexico through the International Boundary and Water Commission in consultation with the Department of State.
The Colorado River provides water for more than 40 million people and generates hydropower for seven states. It serves as a vital resource for 30 tribes and two Mexican states, sustaining 5.5 million acres of farmland and agricultural communities throughout the West, while also supporting critical ecosystems and protecting endangered species.
Map of the Colorado River drainage basin, created using USGS data. By Shannon1 Creative Commons Attribution-Share Alike 4.0
At a Breckenridge Town Council work session Tuesday, Aug. 11, council member Dick Carleton requested public works staff lead a longer discussion examining whether the section of river starting at Skelly Pond could be lined to keep more water above ground. Carleton said a group of “informed citizens” approached him with concerns over the lack of water flowing through town…Phelps plans to return to council Tuesday, Aug. 25, with information about what it would take to install a continuous liner through that stretch of river and to gauge the council’s interest in pursuing a design.
The river’s current state, like nearly all other bodies of water across the West, is closely tied to unprecedented drought conditions. Phelps said flows between the dredge pond all the way to Ski Hill Road have approached the lowest levels recorded during 42 years of recorded monitoring. The median flow for this time of year typically remains around 32 cubic feet per second, according to Phelps. In the last two weeks, flows have ranged from as low as 12 cfs to 22 cfs. Rain on Wednesday, Aug. 12, temporarily pushed the flow to about 22 cfs, but by the next day it had already fallen below 16 cfs.
Army Corps approves a permit for the Line 5 oil pipeline tunnel just as a state permit is invalidated.
NOAA finds that July was the warmest month in the country’s 132-year historical record.
U.S. Fish and Wildlife Service takes comments on draining farmland near protected prairie wetlands.
Two Senate Democrats introduce water system cybersecurity bill.
USGS reports on long-term changes in U.S. groundwater and surface water.
And lastly, the two big Colorado River reservoirs drop to all-time lows as the federal government prepares a new two-year operating plan.
“What can we do if the administration isn’t willing to allow us to use the [Glen Canyon Dam] bypass tubes for high-flow experiments, if that’s going to be off the table, at least for a while?” – Wayne Pullan, Upper Colorado regional director at the Bureau of Reclamation, discussing Trump administration constraints on using Glen Canyon Dam to assist threatened fish in the Grand Canyon and rebuild eroded beaches along that stretch of the Colorado River. Earlier this month, Reclamation decided against a short-term release of cold water from deeper in Lake Powell to disrupt non-native fish spawning because the release would have reduced hydropower generation. “We’re in a pinch point,” Pullan added. “A real pinch point.”
News Briefs
Line 5 Decision The Army Corps of Engineers approved a permit for Enbridge to build a tunnel beneath the Straits of Mackinac, a waterway that connects Lake Michigan to Lake Huron. The tunnel would house a new Line 5 oil pipeline.
The federal agency’s decision is not the final word. State permits for the tunnel are being litigated and reversed. On July 31, the Michigan Supreme Court invalidated a state Public Service Commission approval because the commission did not properly assess project impacts or need.
Cybersecurity Bill Some two weeks after Iranian hackers allegedly targeted U.S. water utilities, two Senate Democrats introduced a bill to bolster water system cybersecurity.
The Water Cyber Shield Act focuses on risk reduction. It requires water systems to assess their cybersecurity risks, develop a response plan, and submit them for state approval. The submitted information is exempt from FOIA.
The bill also requires the EPA to establish baseline cybersecurity standards that impose more burdens on higher risk water systems. It authorizes $300 million annually over five years to help drinking water systems identify and fix vulnerabilities, as well as $300 million annually for wastewater systems.
According to NOAA data, it was the hottest single month since record-keeping began at the end of the Gilded Age, in 1895.
The average temperature for those 31 days was 76.9 F, which was 3.3 F above the 20th century average. It was especially warm in the Intermountain West, where states are also observing record-low river flows. [ed.emphasis mine]
Water Trends The West and the High Plains are drying while the Upper Midwest and Northeast are getting wetter.
That is the broad pattern identified in a U.S. Geological Survey evaluation of large-scale groundwater and surface water changes between 1980 and 2020.
On the Radar
Colorado River’s Shrinking Reservoirs Both Lake Mead and Lake Powell now sit at their lowest levels since the manmade reservoirs were first filled.
The record-breaking plunge underscores the precarity of water supplies in the Colorado River basin. Because this year’s mountain snowpack has already melted, the reservoirs will likely set new lows through at least next April.
Lake Mead key elevations. Credit: USBR
Lake Mead is at 1,039 feet, four feet above the level at which hydropower generating capacity at Hoover Dam will drop by 70 percent.
Lake Powell rests at 3,519 feet. The Bureau of Reclamation is attempting to keep the reservoir above 3,500 feet to protect Glen Canyon Dam’s water supply and power-generating infrastructure.
Draining, or Not Draining, Prairie Wetlands The U.S. Fish and Wildlife Service took comments on the process for draining waterlogged lands for farming in an important duck habitat in the northern plains where the government holds wetlands easements.
Formed by retreating glaciers, prairie potholes are shallow ponds in Iowa, Minnesota, Montana, North Dakota, and South Dakota that sustain most of North America’s waterfowl. To protect the habitat, the FWS began buying easements from farmers in 1959. Those easements prohibit draining the wetlands.
To grow crops on sodden land, farmers install drain tile – perforated pipes placed underground. Farmers whose land contains an easement can request the FWS calculate a distance beyond the wetlands where drain tile can be installed.
The agency wants to know how it should make those calculations.
Prairie-Pothole Region of North Dakota. Photo Credit: U.S. Fish and Wildlife Service
This past week, the U.S. Bureau of Reclamation posted an attention-grabbing statistic. By dropping to less than 25% of its capacity, Blue Mesa Reservoir has lost its status as the state’s largest body of water. Lake Granby, itself just 62% full, now holds the title.
Recent best seller set in Iola and the West Fork of the Gunnison River. Click the image to read about it.
The ruins of Iola, a community flooded in the creation of Blue Mesa, are now visible. Parts of the Gunnison River snake through the lakebed in imitation of its historic path before the reservoir was dammed in the 1960s.
In a different year, the water storage unit that includes Blue Mesa might have helped replenish Lake Powell, the second-largest reservoir in the U.S., which now sits worryingly close to power pool. Power pool is the threshold when water levels drop too low to produce hydroelectric power…There’s no chance of Blue Mesa contributing much to Lake Powell this year, said Steve Pope, manager of the Uncompahgre Valley Water Users Association…The Uncompahgre Valley Water Users Association relies on water stored in the Blue Mesa, which is diverted downstream through the Gunnison Tunnel to irrigate tens of thousands of acres of farmland. The communities of Montrose, Delta and Olathe also rely on raw water from the tunnel for municipal use. The association typically has a secondary water supply from the Uncompahgre River, but Pope said that source is “nonexistent” this year. In anticipation of shortages, the association already limited users to 50% of their allocations this spring. Pope said he hoped no further restrictions would be necessary before Labor Day. Large row crop producers have already fallowed 30%-60% of their land in the valley, he said…
The Bureau of Reclamation has taken steps to avoid that scenario, said Caleb Foy, senior water resources engineer at the Colorado River Water Conservation District. Water managers were already anticipating a historically dry year this spring, when the window for the mountains to accumulate snowpack passed leaving the lowest amount ever recorded. Snowpack melts in spring to produce runoff, which feeds the Colorado River Basin. If the Bureau of Reclamation and water rights holders along the Gunnison River had not put restrictions in place, Blue Mesa might have been on a trajectory to drain past power pool, Foy said. The reservoir’s generators have an 86.4-megawatt capacity, enough to generate power for about 3,400 homes.
Lake Powell’s drastically low water levels are evident in the discoloration of ancient cliffs that were submerged for decades, often referred to as “the bathtub ring” in March 2026 | Page Buono (American Rivers)
Click the link too read the article on the Colorado Politics website (Marianne Goodland). Here’s an excerpt:
August 17, 2026
In the past 10 days, both Lake Mead on the Arizona-Nevada border and Lake Powell roughly 300 miles northeast on the Utah-Arizona line have recorded their lowest water levels since the reservoirs were first filled. Lake Mead, the nation’s largest reservoir and which supplies water to Nevada, Arizona and California, measured 1,040.4 feet above sea level on Aug. 7. The level has continued to drop since then. On Monday, the reservoir measured 1,039.83 feet above sea level, nearly 190 feet below full and down about 2 feet over the past 30 days. A year ago, Lake Mead stood at roughly 1,054 feet.
Rarely seen back of the Hoover Dam prior to first fill
Hoover Dam, which created Lake Mead, was completed in 1935. The reservoir was last at full in 1983. If the reservoir loses another 4.76 feet, Hoover Dam begins to lose its ability to generate significant hydropower. At 895 feet, it reaches “dead pool” — a complete shutdown of Hoover’s hydropower system.
Lake Powell, the nation’s second largest reservoir and the water bank for Colorado, New Mexico, Utah and Wyoming, reached its lowest point in history on Sunday at 3,519.8 feet above sea level. A year ago, it stood at 3,551.33 feet above sea level.
Glen Canyon Dam construction. Credit: Sibley’s Rivers
Glen Canyon Dam, which created the reservoir, was constructed in 1966. The last time Lake Powell was close to full was in 1999. At 3,490 feet, Glen Canyon Dam also begins to lose its ability to generate hydropower. At 3,370 feet, the elevation known as dead pool, hydropower production would stop entirely.
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
Both reservoirs are fed by the Colorado River, which has been hit by what some called a thousand-year megadrought that has cut its supply from around 15 million acre-feet per year to 12 million…This shouldn’t come as a surprise to anyone, according to Eric Kuhn, retired general manager of the Colorado River District.
“This was inevitable,” he told Colorado Politics. “All of the science has been pointing to this for 25 years.”
The Colorado River Basin spans seven U.S. states and is divided into Upper and Lower Basins. Lake Powell, upstream from the Grand Canyon, and Lake Mead, near Las Vegas, are the two principal reservoirs in the Colorado River water-supply system. (Bureau of Reclamation)
Climate change will almost certainly feature prominently in any multi-state litigation over the Colorado River. A court case over an almost-finished dam expansion may decide how.
Is climate change enough justification to stop the expansion of a reservoir that will take more water from the dwindling Colorado River?
That’s the central question in a lawsuit pitting the U.S. Army Corps of Engineers and Colorado’s largest water utility against a consortium of environmental nonprofits. The environmentalists say the Colorado River has no more water to give, while Denver Water, the utility whose Gross Reservoir would nearly triple in capacity, argues it is ensuring its customers can withstand droughts. The Corps contends it is not required to consider climate change or the downstream effects of its expansion of a dam to grow the reservoir.
The case in the 10th U.S. Circuit Court of Appeals has the potential to ripple through Western water management as states, tribes, cities and the federal government struggle to find a compromise on how to steeply cut water use. Some see history repeating itself, with the Gross Dam expansion emblematic of the kind of thinking that helped put the West into the very water crisis the project is meant to buffer the region against.
“Does it make sense for major water projects like this to continue to move forward?” asked Sarah Matsumoto, an associate professor of clinical law at the University of Colorado, Boulder, and director of the Getches-Green Natural Resources, Energy, and Environmental Law Clinic. “I just don’t think it does anymore, without at minimum considering impacts of climate and impacts of overappropriation on the river.”
The Corps and Denver Water appealed that decision, arguing that construction of the dam expansion is nearly complete, and topping off the reservoir behind it is in the public’s best interest. There are no other alternatives to consider, the utility asserts. The National Environmental Policy Act (NEPA), which requires evaluating the impacts of projects that need federal approval, does not require the assessment of climate change, they contend.
“We believe that considering potential climate impacts to a project goes beyond the scope of any guidelines, practicability, or NEPA reasonableness analysis,” said U.S. Department of Justice attorney Kyle Glynn, representing the Army Corps, during oral arguments for the case before the 10th Circuit Court of Appeals.
The expansion of Denver Water’s Gross Reservoir would hold an additional 77,000 acre feet of water diverted from the declining Colorado River, enough water for roughly 150,000 homes. Denver Water would get that water incrementally from an unused 1945 water right of 18,000 annual acre feet to ensure it can supply the growing metropolis of Denver and protect its water supplies during droughts.
The utility plans to only use its water right during wet years when it can stockpile water from excess supply. Of the 77,000 acre feet in diversions, 5,000 would be sequestered in an “environmental pool” that would enhance streamflows on South Boulder Creek and serve as additional storage for the cities of Boulder and Lafayette.
But environmentalists are not convinced there will be enough surplus water in the future for the utility to fill the reservoir. If the state is required to cut back its water use to address system-wide shortages on the Colorado River, reductions the seven states that depend on the river are currently negotiating, what happens to the over $800 million project, they wonder.
Those are the concerns driving the environmental groups, which sued over what they called an inadequate NEPA process and a failure to properly examine alternatives to the project. Natural resource professors watching the case share their concerns. The court’s decision, both say, could have far-reaching consequences for Southwestern states and nearly 40 million people who rely on the Colorado River, and could determine how climate change is considered in any future litigation.
Denver Water’s position is in direct contradiction with what Colorado is arguing in the current negotiations about how much water from the river states must give up, said Gary Wockner, founder of Save the Colorado, the environmental group that’s led the push against the Gross Reservoir expansion.
Colorado has maintained that it and other states close to the river’s headwaters should not have to make mandatory cuts because climate change is already limiting their supply by reducing river and stream flows. Should the negotiations over cuts to allocations from the river devolve so completely that states in the upper and lower halves of the Colorado River Basin sue one another, some water law experts believe climate change would figure prominently in the litigation.
“If the court supports Denver Water and says that Denver Water did not have to account for climate change to prove that they could operate the project, it sets a very difficult and perhaps powerful precedent, potentially undermining the state of Colorado’s position in the entire Colorado River negotiations,” Wockner said.
Roller-compacted concrete will be placed on top of the existing dam to raise it to a new height of 471 feet. A total of 118 new steps will make up the new dam. Image credit: Denver Water.
Can a Dam’s Progress Block Climate Considerations?
On the last day of July, attorneys for the environmental groups, Denver Water and U.S. Army Corps of Engineers gathered before three justices on the 10th Circuit Court of Appeals in a courtroom in Santa Fe, New Mexico. Their oral arguments came nearly two years after senior federal judge Christine Arguello ruled in favor of the environmentalists, saying that “the cracked foundation of the Colorado River’s management system all but demands skepticism over any proposal that will affect the hydrology of the Colorado River basin.”
Arguello’s decision didn’t stop construction to expand the dam, but forced the parties to meet and agree on remedies. Those discussions failed, however, leading Arguello to issue an injunction to stop construction in April 2025. That was lifted due to safety concerns about the dam being left incomplete, but an injunction remained preventing the clearing of the forest below to make room for the additional water, or filling the added space behind the dam.
The Gross Reservoir expansion solves a problem Denver Water has been trying to address for 23 years, said Jessica Brody, general counsel for the utility, in the 10th Circuit last month.
Denver Water has a water storage imbalance between its two collection systems with 90% of its reservoir storage located in the utility’s South System compared to 10% in its North System. This storage imbalance creates vulnerability if there is a drought, mechanical issue or emergency that affects the South System. The storage imbalance is one of the reasons Denver Water is expanding Gross Reservoir. Image credit: Denver Water.
Denver Water’s storage and delivery network is divided into north and south systems, which are unconnected and imbalanced. The south system provides 80 percent of the utility’s water supply, and if it were to go down, the north system, which includes Gross Reservoir, could run out of water in just one year. That leaves the utility’s system vulnerable in times of severe drought, wildfires or other emergencies.
Despite construction being nearly done, Brody said, Denver Water has a dam it cannot fill because of the lower court’s opinion.
That decision was an “abuse” of the court’s power, she said, as the water rights at stake are under the jurisdiction of the state, not federal agencies. Plaintiffs never sought a preliminary injunction to stop construction, although they did when later mediation failed. Jurisdiction over the cutting of trees to make room for the expanded reservoir lies with the U.S. Forest Service and the Federal Energy Regulatory Commission, not the Corps, she said.
The arguments from Denver Water and the Corps seemed to resonate with the three justices presiding over the case, largely due to the fact the dam is nearly complete.
“Poor pun: It’s water over the dam, because it’s built,” said Judge Timothy Tymkovich. “So costs, and I think climate change, are off the table now.”
William Eubanks, the attorney representing the environmental groups, disagreed. The dam expansion is part of Denver Water’s Moffat Collection System project, which requires work in addition to the Gross Reservoir project, such as felling the trees.
And there is still the question of where the water will come from.
A central point for the lawsuit, he said, is that under the Clean Water Act, water infrastructure developers have to show a project can be built and fulfill the expected need—in this case, a reservoir with more water. That wasn’t done here, Eubanks said.
“With the Moffat Collection System project, Denver Water and the Army Corps have recklessly gambled with over $800 million of ratepayer money,” Eubanks said before the court. Neither the Corps nor the utility forecasted whether there would be enough surplus water in the Colorado River for Denver Water to fill its reservoir, he argued. “In effect, they’re building a giant bathtub, even though there’s likely no water to ever fill it.”
CU Boulder professor Matsumoto is one of 11 natural resource law experts who submitted an amicus brief to the court asking it to affirm the lower court’s decision.
This case, they wrote, is a “classic example of why we need NEPA”—illustrating the consequences of an agency permitting and approving a project without a full evaluation of other alternatives and whether the project was even feasible. The foundational U.S. environmental law was designed to push agencies to “fully appreciate the consequences of their actions before they move forward with those actions,” they wrote.
The Corps violated NEPA by limiting the number of alternatives it considered for the project and only examining impacts up to 50 miles downstream, not along the full course of the river, the brief noted.
“It just doesn’t make any sense for the amount of water that they’re getting,” said Mark Squillace, a natural resources law professor at the University of Colorado in Boulder, and another one of the professors part of the amicus brief. “It’s insane.”
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
A Complicating Compact
Since 1922, the Colorado River has been governed by its eponymous compact, which is now widely acknowledged to have overallocated the river by millions of acre feet of water. Under the compact, both the Upper Colorado River Basin, made up of Colorado, New Mexico, Utah and Wyoming, and the Lower Basin states of Arizona, California and Nevada, are entitled to 7.5 million acre feet of water, with another 1.5 million acre feet going to Mexico. But the river has averaged closer to 11 million acre feet since 2020—more than 6 million acre feet less than the total that has been allocated, according to the most recent federal data.
Though both basins get an equal share of the river, Article III(d) of the compact specifies that the Upper Basin “will not cause the flow of the river” to be depleted below an average of 7.5 million acre feet per year over any 10-year period downstream.
Failing to meet that requirement could trigger the Lower Basin to demand more water from the Upper Basin in what is known as a “compact call.” That unprecedented action could force severe water usage curtailments in the Upper Basin, and how that would affect users like Denver Water is unclear. The system is dangerously close to the hydrological conditions that could trigger a compact call.
It’s a known risk for this project, the professors say, but one that was ignored during permitting.
Gross Reservoir is far from the only new diversion proposed in the Upper Basin, which has never used its full allocation from the river, but sees that water as key to the region’s continued economic growth and prosperity. Over 1 million acre feet of diversions have been proposed across 30 projects in the Upper Basin. Many of those may not be developed, but they have become a sticking point in negotiations over the river’s future.
“Repeating the Same Mistakes”
As the lawyers argued in Santa Fe, news of a short-term federal proposalfor managing the Colorado River rippled across the basin. In the absence of a new consensus among the states over how to allocate the water, the federal government stepped in to manage the crisis.
Its track record on the Colorado River is deeply checkered.
The compact has served as the bedrock for a web of dams, reservoirs, canals and ditches built largely with federal funding and engineering prowess to distribute water across arid Western lands. The magnitude of this diffuse system and its overreliance on diverting and impounding water, experts say, is at least partially responsible for the severity of the West’s water crisis.
Building the Gross Reservoir Dam in the 1950s. Photo credit: Denver Water.
Some believed not everyone has learned the lesson. “We’re just repeating the same mistakes,” Squillace said. “A lot of it just results from a lack of imagination about a better way to do things.”
As water supplies shift, water utilities across the West are squeezing every last drop out of their systems through a range of modifications and adjustments to their infrastructure.
After the first of the West’s deep 21st-century droughts in 2002, Denver Water, which serves 1.5 million people across Colorado’s Front Range, decided it needed to act. The utility convinced the Army Corps of Engineers, which completed the original Gross Reservoir in the 1950s, that raising the dam to triple the amount of water it could impound would be the best course of action to combat drought.
Since then, Denver Water has also invested in water efficiency, which allowed it to better endure droughts from 2002 to 2026. Despite a growing population, water use is below the benchmarks from the 1970s, said Jeff Martin, Denver Water’s program manager for the reservoir expansion.
“We’ve really capitalized on most of our customer savings at this point,” he said. “Now, we need to shore up the rest of our need with the expanded reservoir.”
But a drier future is precisely what should preclude Denver Water and the Corps from seeing this project through, said Wockner with Save the Colorado.
“It’s nonsensical to be diverting more water out of rivers anywhere in the Southwest United States,” he said. “Because in many ways the climate change bullseye in the United States is on the Southwest and Colorado River Basin.”
The Colorado River, Wockner said, has no more water to give. But Martin sees room for more improvement in how the river is managed.
“I would be the first to say something needs to change there on how we use the river for all stakeholders, including some type of cuts throughout the system,” said Martin. “I’m not that decision maker though.”
Graphic credit: RogerWendell.com
The state, he said, controls Denver Water’s rights to the river. The utility has the right to use the water that may one day fill Gross Reservoir, he said, and has been planning to do so for decades.
Despite arguments that the water isn’t available, Martin has no doubt Denver Water will be able to one day fill the reservoir—if the courts allow it.
What Comes Next
The justices have given no indication of when a ruling on the Gross Reservoir Expansion Project will land.
If Denver Water loses its current appeal, the utility claims it will be unable to ensure a reliable water supply during times of drought, and the decision may deter developers from pursuing other ambitious projects to solve the West’s water problems, from new dams to expensive desalination plants.
In the Santa Fe courtroom, Teagen Blakey sat on a wooden bench watching the lawyers argue over a project that has loomed over more years of her life than it hasn’t.
President of The Environmental Group, a nonprofit from Colorado’s Front Range and one of the lawsuit’s plaintiffs, Blakey grew up in the area around Gross Reservoir. She remembers sitting in community meetings as a teenager when the project was being permitted.
Despite the project’s impacts on Boulder County, the water won’t serve residents there, she pointed out. But the dam and reservoir expansions’ impacts will fall on the local population. At the site where Denver Water will clear the forest is a hike featuring a waterfall that would be submerged.
“It’s something you can’t quantify as a value,” she said.
With such a high cost to something so special, Blakey said, there must be certainty about the benefit it will provide.
South Platte River Basin via Wikipedia
Map of the Colorado River drainage basin, created using USGS data. By Shannon1 Creative Commons Attribution-Share Alike 4.0
Glen Canyon Dam truly is a monumental structure, a 726-foot tall, 5-million-cubic-yard concrete plug that attempts to control and harness the tempestuous waters of the mighty Colorado River. It and the reservoir behind it serve as a water savings account that helps the Upper Basin states comply with the Colorado River Compact during dry years; they capture millions of tons of silt each year that would otherwise flow downstream and fill up Lake Mead; they provide a surface on which boaters can play; and the dam’s hydroelectric turbines are among the West’s largest power plants.
Now climate change-induced aridification and overconsumption has muddled the dam’s ability to serve its intended purposes aside from silt capture. Its savings are depleted, many of the boat ramps are unusable, and hydropower production has declined along with reservoir water levels.
The Bureau of Reclamation is now struggling to keep the dam viable, sort of, by trying to keep Lake Powell’s surface level from falling below 3,500 feet. This avoids reliance on the lower river outlet works, which are not designed for sustained use. But it also allows the dam to continue producing electricity.
Keeping the turbines turning is one of the main reasons the feds give for not even considering the proposal to reengineer the dam — either by fixing the river outlet works or boring a bypass tunnel through the canyon walls — to allow water releases at low reservoir levels. While it would give a lot more flexibility to dam operators and give “life” to currently “dead” storage, it would also zero out the hydropower production upon which, according to the Bureau of Reclamation and media reports, some 5 million people rely. Maximizing hydropower production is also the Bureau’s justification for ending cool mix releases aimed at mitigating smallmouth bass infestations downstream. This imperils both stocked and native endangered fish in the Colorado River.
This raises the question: What is the deal with hydropower and Glen Canyon Dam? And is it really that important to the Western power grid?
A visual look at Glen Canyon and Hoover Dam’s 2025 energy output compared to other generators in the Southwest (CA, NV, UT, CO, AZ, NM). Click here for an interactive look. Source: Land Desk dataviz using EIA data.
Eight generators sit at the toe of the dam, fueled by water channeled from the reservoir through the dam’s eight penstocks. Each generator has a nameplate capacity, or maximum rated output, of 165,000 kW, or 165 MW, for a total generating capacity of 1,320 MW, on a par with a large coal power plant (the Four Corners plant has a 1,540-MW capacity). In other words Glen Canyon Dam is a big power plant.
But capacity is really just potential, and what really counts is how completely and in what manner the power plant lives up to its potential. In that respect, Glen Canyon Dam has been a bit of a slacker lately.
That 1,320 MW of capacity is only true when the reservoir is at full pool, or 3,700 feet, when the water pressure needed to turn the turbines is at its highest level. As Lake Powell’s water levels drop, so does the hydroelectric “head,” or the vertical distance that the water falls, along with the water pressure. When the reservoir is full, or the level is at 3,700 feet, it takes about 1.9 acre-feet of water to generate 1 megawatt-hour of energy. At 3,500 feet, it takes 2.9 acre-feet to generate the same amount of electricity. As a result, at the reservoir’s current level (approx. 3,520 feet), the dam’s power plant has a capacity of just about 730 MW.
As the reservoir’s surface level drops, so too does water pressure, which in turn diminishes the turbine’s power capacity. The reservoir’s pool elevation sat just above 3,520 feet on August 13, 2026. Source: Bureau of Reclamation.
Naturally, a power plant’s output is also going to be determined by how much fuel you feed it, which in this case is water run through the penstocks, or releases from the dam. Back in the 1980s, when the reservoir was full (and then some), Glen Canyon Dam’s annual output was nearly 9 million megawatt-hours, or enough to power about 869,000 average American households for one year. But in 2025, it only produced 2.75 million megawatt-hours, or enough to power 269,370 homes. This year’s output will be considerably lower, since both reservoir levels (and thus, generating capacity) and dam releases have dropped significantly.
Glen Canyon Dam’s electricity production varies according to reservoir levels and releases through the penstocks/turbines. Source: Western Area Power Administration.
It throws the claims that some 5 million people rely on the power plant into dubious light, but it is still a lot of energy: Last year, Glen Canyon Dam had the 15th largest output among the Southwest’s hundreds of utility-scale power plants. But its output is dwarfed by Palo Verde nuclear plant’s 31.2 million megawatt-hours annually. Even Four Corners coal plant, which shuttered two of its units a decade ago, still puts out more than 8 million megawatt-hours per year, three times that of Glen Canyon. (Hoover Dam has a higher nameplate capacity than Glen Canyon, but its 2025 output was about the same as Glen Canyon’s).
Glen Canyon Dam is the largest generator in the Colorado River Storage Project, which is a part of the federal Western Area Power Administration’s Salt Lake City Area/Integrated Projects. WAPA markets the power from these projects at relatively low rates to about 140 municipalities, cooperatives, tribal nations, irrigation districts, and utilities across the West. Last year’s power sale revenues from WAPA’s SLCA projects totaled almost $179 million, money that goes into the Basin Fund, and then is used to operate the dams and other infrastructure, to purchase replacement power, to pay off debt, and to fund endangered species programs.
A hydropower dam’s value goes beyond its ability to produce a steady stream of energy and revenue. The power grid must stay in balance at all times, meaning that supply — or generation — must always be equal to demand. Throw off the balance and you risk a cascading failure that can lead to wide scale outages. Hydropower is super flexible, meaning a turbine’s output can be ramped up or down quickly by simply changing the amount of water entering the penstock. As more and more solar and wind, or variable renewable resources, are added to the grid, balancing the ups and downs becomes more challenging, making flexible tools like hydropower more critical.
In theory, Glen Canyon Dam’s operators could hold back water throughout the middle of the day, when electricity demand is lower and solar output is highest, and then open up the penstocks full blast in the late afternoon and evening, when solar drops off and the air-conditioners come on, driving up electricity demand, or load. Similarly, they could fire up the turbines, so to speak, if another power plant on the grid malfunctioned.
For the first 30 years of its existence, Glen Canyon Dam’s operators were fairly free to operate the power plant as a sort of grid-balancing peaker plant. On one July day in 1989, for example, the operators choked off flows to the turbines in the early morning hours when power demand was low, so that about 3,471 cubic feet of water per second was running through the dam at 5 a.m., a virtual trickle for the Colorado. As the day heated up and power demand climbed (there was barely any solar on the grid back then), they cranked up the amount of water flowing through the turbines and into the river to a monstrous 29,000 cfs—the maximum possible flow through the turbines—to inject a bunch of juice into the grid.
This was good for the grid, and good for revenues from power sales, since energy costs more during peak demand. It wasn’t so good for the river downstream or the folks who were using it, however. Imagine being a rafter on the Grand Canyon and watching the mighty Colorado shrink to less than 4,000 cfs, before growing more than eight times that in just 12 hours. That could wreak some serious havoc on one’s trip and, I imagine, a fish’s mojo.
Dam operators at the time wanted to further optimize this grid-balancing ability by installing turbines in the river outlet works so they could release more water and generate more power (and create even greater flow fluctuations downstream). The proposal was not only shot down, but also set off a string of events that ultimately led to the 1992 Grand Canyon Protection Act and the dam’s adaptive management program, which mandate minimum and maximum release rates and limit release fluctuation rates to protect Colorado River recreation and ecosystems downstream of the dam. The dam still serves as a grid-balancing tool, with releases and power generation peaking in the afternoon and reaching their low point in the early morning hours. But its effectiveness has been eroded by both the restrictions and by reduced capacity resulting from lower water levels.
Glen Canyon Dam is less and less critical to the Southwestern power grid with each passing year, and its importance is likely to continue to decline as aridification continues to rob it of its ability to produce power, and as more battery storage comes online to take up its grid-balancing role.
If and when Glen Canyon Dam loses its ability to produce power, it won’t result in millions of people sitting around in the dark with non-functioning air-conditioners. Nor will it bring back shuttered coal plants. The coal-fired Navajo Generating Station just up the road from Glen Canyon Dam put out more than 17 million MWh annually; it shut down in 2019 without crashing the grid or even causing noticeable strain. Same goes for the San Juan and Cholla coal plants.
Back in 2013 the San Onofre nuclear plant near San Diego shut down with little warning due to safety concerns. In the immediate aftermath, natural gas generation spiked as grid operators scrambled to replace the lost generation. But over time, as solar and wind and battery storage capacity was added to the state’s grid, the surge in gas generation subsided. Something similar — although at a much smaller scale — is likely to happen when Glen Canyon goes offline.
Which makes one wonder: Is it really worth it for the feds to expend so much energy and resources, to imperil downstream recreation and endangered fish, and cause so much Lower Basin gnashing of teeth and wringing of hands and possibly filing of lawsuits, to preserve a dam that just isn’t doing what it was intended to? [ed. emphasis mine]
As long as we’re talking energy generation, I figured I’d give a little bit of a wider — and not quite as positive — view of the West’s energy generation and the transition. You may remember that last week I delivered the good news about solar taking over the grid — for the month of May. When you look at the same stats over the entire year of 2025, it doesn’t look quite so rosy, since natural gas generation clearly dominates the grid, at least for now.
In search of some salvation, I went back to 2007 to make a comparison. Back then coal was king of the Western grid (with natural gas as queen), and solar was basically non-existent.
These graphics are available as interactive visualizations with a lot more information on every generator at Tableau. Unfortunately, I still don’t know how to embed them into Substack so that you can view them in situ. For a better view, click on the image or link in each caption.
In 2025, natural gas generation dominated the Western grid, with hydropower and solar rounding out the top three. Coal and wind are in a virtual tie for fourth place. Source: Land Desk dataviz made with EIA data.
This viz shows all of the generators of each kind on the Western grid sized in proportion to 2025 output. You can see that nuclear power plants are big, but few in number; solar plants are generally smaller and spread out. Source: Land Desk dataviz made with EIA data.
Looking at 2007, one can see the massive decline in coal-fired generation over the last couple of decades and the big buildup of solar. Most of the lost coal generation was replaced by solar and wind, not natural gas. Source: Land Desk dataviz using EIA data.
A look at the coal generators shows just how many huge coal plants have retired since 2007: e.g. Navajo, San Juan, Cholla, Centralia. Also note in the nuclear section that San Onofre is also gone. Source: Land Desk dataviz using EIA data.
Tensions about water management are high on the Colorado River, even as water levels in reservoirs like Lake Mead drop to record lows and the west faces severe drought conditions…On July 31, the federal Bureau of Reclamation released a final environmental impact statement which outlines a potential framework for management of the river between 2027 and 2036. This framework would include mandatory water use cuts of up to a combined 3 million acre-feet per year for the lower basin states of California, Nevada and Arizona while seeking 200,000 acre feet in voluntary reductions from the upper basin states of Colorado, New Mexico, Utah and Wyoming. The impact statement and the associated National Environmental Policy Act (NEPA) decision-making process still leave an opportunity for the states on the Colorado River to reach their own agreement about future water use…
Colorado is introducing a new near-term water contribution program designed to take advantage of federal funding to encourage voluntary, compensated reductions in Colorado River water use. At a webinar on Aug. 6, Amy Ostdiek, section chief for the Colorado Water Conservation Board (CWCB) interstate, federal and water information section, explained that this program is one of several parallel activities that the state is undertaking alongside the ongoing NEPA process. She explained that the Bureau of Reclamation has announced that $100 million in funding will be available to support the upper basin states in establishing water contribution programs that will provide “water that but for these actions would not be there” to the Colorado River. She noted that funding would likely support about two years of a program, based on previous project costs, and that, to participate and claim the funds, Colorado would need to act now to begin establishing a program. Ostdiek stated that establishing such a program would honor commitments the state has made in negotiations to making voluntary water use reductions and would show that “Colorado is committed to being part of the solution.”
Map of the San Juan River, a tributary of the Colorado River, in Arizona, Colorado, New Mexico and Utah, USA. Made using USGS National Map data. By Shannon1 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=47456307
After years of analysis and stalled negotiations, the federal government last month finally laid out its proposal for managing the Colorado River’s biggest reservoirs for the next decade. The Bureau of Reclamation still needs to release its final decision and an operating plan for the next two years. But its final environmental impact statement provides a framework for how it intends to manage parts of the Colorado River system under its control…
It still might not be enough in a drying West
The Colorado River Basin has been mired in drought for more than two decades, and research shows that area will likely only get warmer and drier. The question that really matters is how the new plan operates in a dry world, said Jack Schmidt, senior research scientist at Utah State University’s Center for Colorado River Studies. The document gives Reclamation flexibility to respond to an uncertain, but likely drier, river basin. It doesn’t solve all issues, though. If drought conditions don’t improve, Reclamation said in its analysis that “even large and unprecedented reductions may be needed and may not be enough to stabilize storage” at Lake Powell and Lake Mead.
“The scary thing about all of this is that none of this solves the problem if the world keeps getting drier,” Schmidt said. “That should be taken as an enormous warning for the desperate need to reduce the impact of a warming planet and the drying of the Colorado River Basin.”
[…]
Reclamation’s framework sets a goal of 200,000 acre-feet of voluntary water conservation in Utah and other Upper Basin states — Colorado, New Mexico and Wyoming. Gene Shawcroft, Utah’s Colorado River negotiator, said it will likely take Utah and its upstream neighbors three to five years to conserve that amount.
The largest reservoir in Colorado, Blue Mesa, is holding just over 240,000 acre-feet — “roughly about a third of the volume that we would typically expect to see in the reservoir in this time of year,” says Caleb Foy, senior water resources engineer at the Colorado River District. April-through-July inflow, 151,000 acre-feet, is the lowest unregulated inflow on record. This time of year, Blue Mesa is operated to maintain a minimum flow at the Whitewater gauge, far downstream, just above where the Gunnison joins the Colorado. A 2012 federal record of decision sets base-flow targets there — as low as 750 cubic feet per second, though June and July normally call for “upwards of just over 1,000 CFS at 1,050 CFS,” Foy says. Those flows exist to protect biology and recreation in the lower Gunnison, and endangered fish in the 18-mile reach of the Colorado below the confluence. This summer the Bureau of Reclamation, in consultation with the US Fish and Wildlife Service, other Gunnison Basin water users and the State of Colorado, “decided and agreed to lower the whitewater target down to 500 CFS.” It “isn’t certainly done lightly” Foy says: the cut preserves “nearly 500 acre-feet of storage per day” buying time against a Bureau forecast that Blue Mesa could drop below minimum power pool as early as October. Below that elevation the dam’s 86.4-megawatt plant (enough energy to supply at least 34,000 homes at full pool) — stops generating, and Foy says electrical output is already falling. Unlike Glen Canyon Dam, he is “not aware of any concerns” about operating below power pool.
The Farm Collaborative is headquartered at Cozy Point Ranch, an open space property owned by the city of Aspen. The nonprofit serves as not only a regenerative farm but a camp, school and resource center for the local community and farmers. The Farm Collaborative/Courtesy Photo
Click the link to read the article on The Aspen Times website (Lis Longwell). Here’s an excerpt:
August 12, 2026
Three years ago, beavers returned to an Aspen-area testing ground for regenerative agriculture. What’s happened since has been nothing short of transformative, according to Eden Vardy, who started The Farm Collaborative in 2008 with the ambitious goal of finding solutions to climate change.
When beavers returned to The Farm Collaborative in 2023, it was a sign that the regenerative agricultural practices were having the intended effects. The Farm Collaborative/Courtesy Photo
“Everything has transformed, there’s been just so much new growth in the riparian area. We’re starting to see predatory birds explore; I’ve seen a handful of golden eagles and bald eagles and a lot more coyotes and foxes coming into the area. But the most significant is the growth of the water table…This year, when we were anticipating our smallest year of water ever — which it still is, we are now starting to go dry — we had easily two months of more water than we thought we would this year as a result of really the storage systems that the beavers developed for us,” Vardy said…
Beavers’ role as a keystone species and ecosystem engineers has been increasingly recognized by scientists, environmentalists and water providers as an effective means of increasing drought resiliency. A project at Rocky Mountain National Park mimicking beavers has received notoriety for its early success in restoring wetland benefits to a drying landscape. Colorado Parks and Wildlife, during a time when Vardy served on its commission, responded to beavers’ growing popularity with a strategy to guide future species’ conservation and management. In July, the state agency also released beavers in two state wildlife areas near Rifle amid some man-made beaver structures to restore riparian ecosystems…
The Farm Collaborative’s learning center in Aspen was designed as a living classroom to connect individuals with food systems and explore regenerative agriculture practices. The Farm Collaborative/Courtesy Photo
Today, The Farm Collaborative — through youth and community programming as well as farmer support efforts — is focused on helping individuals explore and understand regenerative agriculture. The practice includes efforts to improve soil health, restore biodiversity and enhance water management…
“We are in a dust bowl again right now, just like we were during the Great Depression,” Vardy said. “Our tactics in agriculture, while productive, can have an adverse impact on the land in a way that prohibits our capacity to grow food, and regeneration is just utilizing the land differently, incorporating different techniques — instead of tilling, you can crimp from a grain operation, adding animals to the landscape for fertilization and soil building, cover cropping, crop rotations.”
Regeneration is not, however, simply an altruistic endeavor, he said.
“A beaver doesn’t show up in a water system because it’s altruistic and it wants to see more trout, more insects or more biodiversity; the beaver shows up because it wants to eat willow and it wants to raise its family in a healthy and comfortable way,” he said. “The byproduct of that work is that all these cascading biological effects take place.”
In the same way, regenerative agriculture is about making farms productive in the long term in a way that “restores the cascading effects for biology around the farm,” he added.
American beaver, he was happily sitting back and munching on something. and munching, and munching. By Steve from washington, dc, usa – American Beaver, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=3963858
A group of paddlers take a lunch break on the 15-mile reach of the Colorado River this week. Boaters had to occasionally drag their duckies and paddle boards through the shallows because of extremely low flows. CREDIT: HEATHER SACKETT/ASPEN JOURNALISM
On a hot and sunny morning in August, a group of nine paddlers pushed their duckies and stand-up paddle boards into the Colorado River at Harky’s boat launch in Palisade.
The goal of the float was to experience and document the river at one of the lowest levels it has ever seen. With flows hovering around 93 cfs, a bathtub ring showed on the rocks along the riverbank and rusty hunks of old farm equipment emerged from the streambed. Bright green algae grew between the rocks, and herons and ospreys hunted in the shallows.
In many places, paddlers got hung up on rocks and were forced to drag their watercrafts through the ankle-deep water. It took about four hours to float the roughly six-and-a-half miles from Palisade to Corn Lake, a trip that normally takes two to three hours with higher flows.
The trip was organized by Joel Sholtes, a water resources engineering instructor at Colorado Mesa University and a coordinator for the Grand Valley River Corridor Initiative.
“I knew that the river would kind of be on life support and maybe even dry up so I wanted to get out on the river with the people that were involved in managing its flow and experience the 15-mile reach at such a historically low level,” Sholtes said. “It just felt important to be on it and see it both from a habitat standpoint and from a user experience standpoint.”
Boaters got hung up on rocks in the 15-mile reach of the Colorado River during extremely low flows this week. The stretch of river between Palisade and the confluence of the Gunnison River is chronically dry. CREDIT: HEATHER SACKETT/ASPEN JOURNALISM
The Colorado River and its water users are now experiencing the consequences of the lowest winter snowpack on record, exceptionally hot temperatures and resulting low streamflows. The impacts are being felt across Colorado as farmers and ranchers have their irrigation water cut, cities and towns impose severe water restrictions on their customers and flows dwindle in stretches of river that are critical habitat for the ecosystem.
The stretch of the Colorado River between the large agricultural diversions in Palisade and the downstream confluence with the Gunnison River is known as the 15-mile reach. This chronically depleted section is also home to endangered fish. Water managers work each year to keep enough flows for fish by coordinating carefully timed releases from upstream reservoirs.
This map shows the 15-mile reach of the Colorado River near Grand Junction, home to four species of endangered fish. Map credit: CWCB
Grand Valley’s 15 mile-reach
This year’s historic drought makes keeping enough water in this reach more challenging than usual. The recovery program has pools of water dedicated to the fish in Lake Granby and Ruedi Reservoir that it releases specifically to boost flows in the 15-mile reach, but because of the dry conditions, less of that water is available. According to the Colorado Division of Water Resources, the average August flows in the 15-mile reach have been about 119 cfs this year, far below the 810 cfs target set by the Upper Colorado River Endangered Fish Recovery Program.
The program’s Instream Flow Coordinator David Graf told water managers on a conference call Wednesday that the program is trying to keep 75 cfs in the river through the end of August. Graf said the program was responsible for about 70% of the water in the river during Tuesday’s float; without it, flows could have dipped to around just 25 cfs.
“We are so far below the recommended flows anywhere in the Colorado River basin right now,” Graf said. “Keeping water in there is valuable; it takes a village.”
Irrigators reduce diversions
Nearly all of the river’s flows are being diverted to the Grand Valley’s agricultural producers. Colorado River water transforms the valley’s desert into a ribbon of verdant peach orchards, vineyards, corn and alfalfa fields. The valley’s irrigation districts can collectively draw 1,950 cfs from the river, but this year, they have reduced that down to 1,450 cfs in an effort to save some water for later in the season.
“We collectively set the target flow lower for the sole purpose of extending to gain and accrue some storage,” said Jackie Fisher, manager of Orchard Mesa Irrigation District. “We had none at the beginning of the year and it became super critical to talk with our partners and say, what can we live on now because we knew we needed it two or three months later.”
The Grand Valley Irrigation Company canal on the left is the last big agricultural diversion on the Colorado River in the Grand Valley. It marks the beginning of the 15-mile reach. CREDIT: HEATHER SACKETT/ASPEN JOURNALISM
Late summer is a crucial time for irrigators because the high flows of spring runoff have come and gone, but hot temperatures drive up the amount of water needed by crops. Irrigators often depend on releasing water stored in upstream reservoirs during this time to supplement low river flows. This year, spring runoff peaked weeks early and a pool of water in Green Mountain Reservoir known as the Historic Users Pool did not fill, which created far-reaching impacts.
HUP water is released mainly to satisfy farmers and ranchers in the Grand Valley, which hold the senior, commanding water rights on the river. The HUP also protects other water users, known as HUP beneficiaries, because without the releases from Green Mountain to supplement the Grand Valley, these other users could have to cut back.
Entities that own or lease stored water, like the Colorado River Water Conservation District, the Colorado Water Trust, Grand County and Northern Water, among others, have pitched in this year to contribute extra acre-feet to Grand Valley irrigators. But even with collaboration and water sharing, Grand Valley Water Users Association General Manager Tina Bergonzini said they cannot guarantee water deliveries to their farmers after September 1. Irrigation season typically goes through Oct. 31.
Low flows in the 15-mile reach of the Colorado River revealed a bathtub ring on the rocks lining the riverbank. Water managers strive to keep water in this section for endangered fish. CREDIT: HEATHER SACKETT/ASPEN JOURNALISM
“It probably sounds a little melodramatic to say, but it’s not: It’s literally the first time in 111 years that we’ve run out of water in the Grand Valley Water Users Association,” Bergonzini said. “I’ve done my best and my staff has done their best to make sure that our producers and our residents that are under our system are aware that we could get to the point that we have unreliable delivery.”
GVWUA irrigators have been on restriction all season and the association has been taking just 500 of its 730 cfs water right. Bergonzini said many of her producers have switched to less thirsty crops this year like triticale and Sudangrass, instead of corn and alfalfa, and have made adjustments to the way they irrigate to adapt to less water.
Heading into the fall with unreliable water is a scary scenario for some, Bergonzini said. It’s the time of year when some farmers plant winter crops and have a need for lots of water.
“We’ve tried to make sure everybody is prepared and that’s really all we can do,” she said.
Flows in the 15-mile reach were extremely low this week due to agricultural diversions and a historic drought. The reach is home to endangered fish. CREDIT: HEATHER SACKETT/ASPEN JOURNALISM
As water managers grapple with how to stretch this year’s meager flows as far as possible, Sholtes said from a recreation and quality of life standpoint, the Colorado River still provides so much value to the community – even when it’s barely flowing.
“I think it’s important to know that even in drought conditions, the river is accessible and enjoyable,” he said. “It’s my interest as a citizen in the Grand Valley, and as a scientist, to have a river that works for everyone, and to have growth and use that is compatible with the river ecosystem.”
Bicycling the Colorado National Monument, Grand Valley in the distance via Colorado.com
Kim Lennberg from Alba Watershed Consulting, Luke Kimmes from Colorado Mountain College, and John Kemper from Utah State University, collect data on the Elk River in 2025. Photo credit: Friends of the Yampa
Here’s the release from Friends of the Yampa:
July 29, 2026
Results for the 2025 Yampa River Scorecard Project focusing on the Elk River Segment are now available. This segment stretches for about 32 miles from the confluence with the South Fork Elk River to the confluence with the Yampa River. The main stem of the Elk flows through a mixture of private property and the Medicine Bow-Routt National Forest, past Glen Eden and Clark, and through a variety of large working ranches and small private developments. It also passes through the Christina State Wildlife Area, a Colorado Parks & Wildlife fishing easement, before reaching the main stem of the Yampa River east of Milner.
A complex combination of parameters is measured and considered when determining the score for any of the project segments. These parameters include flow and sediment regimes, water quality, habitat and riverscape connectivity, riparian conditions, river form, micro and macro habitat considerations, and the biotic community.
The overall score for the Ecological Health and Function of this segment was a “B.” This represents an overall healthy river. Findings show that this segment should continue to be protected as an example of a well-functioning system that supports both a healthy and productive human community and a relatively natural ecosystem.
Key findings:
Channel morphology largely intact
Limited invasive plant species present
Water quality generally excellent
Some periodic exceedances of temperature thresholds downstream
Bank armoring is the main detrimental factor that negatively influences organisms’ ability to move between aquatic habitat and riparian habitats
Native fish data is sparse and there is widespread and unregulated stocking of non-native fish species
The overall score of “B” refers to the Ecological Health and Function of the Elk River. Other attributes scored included People and Community Benefits and River Uses and Management. Photo credit: Friends of the Yampa
Why Do a River Health Assessment?
The Yampa River Scorecard Project is the implementation of a goal set forth in the Yampa White Green Basin Roundtable “Integrated Water Management Plan.” It is an ongoing river health assessment that will eventually provide data on the health of the Yampa River in its entirety. The goals for this project are to:
1) Provide a source of ongoing data collection related to river health that can document change over time.
2) Improve public understanding of river processes, river use, and river ecosystem services through an engaging public interface that communicates our findings at yampascorecard.org.
3) Provide information related to river health that may be used voluntarily by landowners/land managers to inform river and land-management decisions.
To accomplish these goals, Friends of the Yampa and Scorecard partners have divided the river into six segments. One segment is assessed each year so that after six years, the health of the entire river will be assessed.
The Yampa Basin is divided into 6 focal segments. The year listed is when the majority of the data is collected, and most reports will come out early the following year. Credit: Friends of the Yampa.
Denver Water is throwing its weight behind and spreading the word about a proposed ballot initiative that would ask voters to redirect a portion of state sales tax revenue on sleeping bags, hiking boots and skis to help fight wildfires, reduce risk of additional blazes, and restore mountain watersheds already damaged by fire.
It’s a rare move for the state’s largest water provider, which serves 1.5 million customers in the metro area, and has been hard hit by major blazes, with thousands of acres of land scorched and reservoirs filled with debris. Tens of millions of dollars have been spent restoring land in the South Platte River Basin, where major events, such as the Hayman Fire in 2002, devastated key mountain lands and the streams that feed its collection system.
“For us it is a major infrastructure need,” said Alan Salazar, Denver Water’s general manager.
Proposition 308 is not yet on the ballot. Signatures were submitted to the Colorado Secretary of State’s office July 27. The office has until Sept. 2 to review the signatures.
For the past 20 years, as deep droughts have periodically gripped the state, wildfires have emerged as a major threat to the mountain watersheds that deliver fresh water across the state, from Durango, to Aurora, Denver and Fort Collins.
Denver Water operates a special fire mitigation project each year in partnership with other state and federal agencies, known as Forests to Faucets. But even with this collaborative approach, there isn’t enough money or labor to do all the work on the ground, Salazar said.
Proposition 308 would provide about $175 million annually that would go toward water and land conservation, according to Aaron Citron, The Nature Conservancy’s Natural Resources Policy Adviser in Colorado. The Nature Conservancy is one of the backers of 308, alongside Conservation Colorado, the Trust for Public Land and Western Resource Advocates.
The money would be taken from state coffers in years when there is a budget surplus. Though the proposal is not a new tax, it could reduce the size of refunds taxpayers normally receive in years when there is a surplus.
“Four of the largest wildfires have ignited in the last six years, burning 1.5 million acres. That has brought these issues more into the public consciousness … We know we have to act now if we want to protect resources and wildlife,” Citron said.
The money would be controlled mostly by GOCO and the state Natural Resources department
If approved, Proposition 308 would give about half of the sales tax revenue generated, $83 million, to Great Outdoors Colorado and another $83 million to the Colorado Department of Natural Resources, to expand land and water conservation programs these agencies already operate. Another $4.3 million would go to promoting outdoor recreation and the remaining $4.3 million would be spent to increase families’ access to the outdoors.
The ballot measure would exempt taxes collected on some sporting goods from the Taxpayer’s Bill of Rights, or TABOR, in a process known as de-Brucing, which is named after Douglas Bruce, the architect of the 1990 TABOR amendment.
Aurora Water staff has recommended that the city also endorse the measure but no formal action has been taken by city council, according to spokeswoman Shonnie Cline.
Budget hawks, such as Jon Caldara, president of Denver’s Independence Institute, said the citizen initiative is likely a reflection of voter frustration with state lawmakers, who he says haven’t done enough to fund the state’s basic need for water infrastructure, public safety and roads.
“Whether it is water or transportation infrastructure, we’re seeing that people are getting tired of the legislature not budgeting for basic needs. We shouldn’t be surprised people are taking their funding back,” Caldara said.
Unlike Denver and Aurora, Northern Water has not endorsed Proposition 308, General Manager Brad Wind said. Its board will likely receive a briefing on the topic in September.
Northern, too, has been hard-hit by wildfires. It has spent upwards of $100 million to restore and better protect its sprawling watershed west of Rocky Mountain National Park, which was scorched by the East Troublesome and Cameron Peak fires in 2020. Still, Wind said, that cash has allowed them to do only the bare minimum.
“We’re just touching the higher risk areas,” Wind said, “The cost is immense. I can’t imagine any utility has the money to make the investments needed.”
How voters will respond to Proposition 308 in November isn’t clear. Salazar said he isn’t aware of any organized opposition yet, but several other initiatives are also headed for the ballot, making a long list of things for voters to consider.
“It appears to be a crowded ballot,” Salazar said. “We want to make sure that when people get to this they are not exhausted.”
No, Lake Powell’s not that close to actual dead pool — or the level at which water can no longer be released downstream. At least not yet. But it is now within 20 feet of de facto deadpool, or 3,500 feet, which is the surface elevation the feds have said they will “defend” to keep Glen Canyon Dam viable. Besides, in this case I’m using “deadpool” somewhat metaphorically to describe the current state of water on the Colorado River and the rest of the West, which is about as dire as “deadpool” sounds.
It’s normal for streamflows to drop in August as the last remnants of high-country snow disappear in the dog-days sun. But since most of the snow was gone by late June, and the monsoon has thus far dropped in only for brief, violent, and occasional visits, almost every creek and river in the West is flowing far below median levels for this time of year. The water is also unusually warm, which is bad for fish. The Animas River in Durango, for example has climbed up into the 70° F territory every day for the last several weeks.
In the Upper Colorado River Basin, irrigation ditches with junior water rights are getting shut down right and left, weeks earlier than normal and just ahead of the big harvesting season. It’s already been a tough summer for most farmers; if reliable rains don’t arrive soon it could get much worse.
Paonia Reservoir in western Colorado has become a run-of-the-river operation, leaving downstream irrigation ditches in the North Fork Valley virtually dry — though those with senior rights continue to flow, for now.
One of the scariest dry-time indicators of the summer so far was the Colorado River near Palisade, Colorado, which fell to 43 cubic feet per second in early August. To put that in context, McElmo Creek, which is basically a desert arroyo fed by irrigation runoff, has been running around 30 cfs for the last few weeks.
It’s important to note, however, that it’s not only drought, but also diversions, that are depleting the Colorado River. The river below Glenwood Springs, which is upstream of Palisade, has been running around 1,700 cfs. And major ditches — Cameco, Orchard Mesa, and Grand Valley canals — that pull water from the Colorado just upstream from the Palisade gage are together carrying some 2,000 cfs, meaning they are taking nearly all of the river’s water. Runoff from those ditches eventually runs back into the Colorado, bringing its flows back up somewhat before the river crosses the state line into Utah.
The Government Highline canal is pulling over 1,200 cfs from the Colorado River upstream of Palisade, and two other canals are drawing more than 500 cfs each, leaving the river almost dry for a segment in the Grand Valley. Source: Colorado Division of Water Resources.
The good news is that rains have started up again in southern Arizona (the National Weather Service’s Tucson office has issued a flash flood watch for tomorrow), and forecasters are predicting thunderstorms will be returning to the rest of the region soon. Hopefully they’ll bring nice, gentle, soaking moisture, and not just lightning and torrential flooding.
But let’s get back to our Lake Powell August update and some numbers:
3,520.8 feet: Surface elevation of Lake Powell on Aug. 10, 2026. This is still about 9 inches higher than the previous all-time low of 3,519.9 in April of 2023. But that was April and there was already a bunch of snow in the high-country that would soon boost reservoir levels. The reservoir has been declining at a rate of about 2 inches per day, but that’s likely to speed up unless there is significant upstream precipitation in the coming weeks. So it’s not far-fetched to think it will drop to 3,500 feet as soon as this October.
2,505 cubic feet per second: Lake Powell’s inflow on Aug. 10, 2026.
-387 cfs: Lake Powell’s unregulated inflow on Aug. 8, 2026. Yes, that is a negative number, which may seem impossible. But unregulated inflow is an estimate of what the inflows would be without supplemental releases from upstream dams. Which means that valuable water is being released from upstream dams to slow Lake Powell’s decline.
7,710 cfs: Total average daily release from Glen Canyon Dam on Aug. 10, 2026.
281,267 acre-feet: Total inflows in July 2026.
83,824 acre-feet: Total unregulated inflows in July 2026 (meaning nearly 200,000 acre-feet was released from upstream dams to supplement the flows).
24,164 acre-feet: Estimated evaporation from Lake Powell in July 2026.
482,092 acre-feet: Total releases from Glen Canyon Dam in July 2026.
-224,989 acre-feet: Lake Powell’s water deficit in July 2026 (inflows – evaporation – releases = deficit)
-422,432 acre-feet: Lake Powell’s water deficit using unregulated inflow (or what it would be without supplemental water from upstream reservoirs).
3.72 million acre-feet: Total Lake Powell inflows so far this water year. At this pace, the 2026 water year’s total inflows will be around 4.2 MAF.
159 acre-feet: Total cool mix releases from Glen Canyon Dam in July 2026. This is where cooler water is released through the river outlet tubes — bypassing the hydropower turbines — to stifle smallmouth bass reproduction downstream of the dam. These releases have become necessary because during low reservoir levels, the warm-water loving bass are more likely to get sucked through the dam into the river, where they compete with and prey on native fish and stocked trout. But the Associated Press reports that the Bureau of Reclamation will not be doing any cool water mixing this year, since it would further reduce already diminished hydropower production from the dam (I’ll dig deep into the hydropower issue in this Friday’s Land Desk dispatch).
It’s not just Lake Powell that’s being drained, of course. During July, Flaming Gorge Reservoir ran an 87,000-acre-feet deficit; Blue Mesa Reservoir ran a 55,000 acre-feet deficit (and it received supplemental inflows from Taylor Park Reservoir); and Navajo Reservoir ran a 77,000-acre-feet deficit. Meanwhile, downstream, Lake Mead’s surface level fell to 1,040.2 feet, which is an all-time low. Deadpool watch, indeed.
The Western wildfire view this morning as seen through the Watch Duty app. It’s a great tool, by the way, and even better if you fork out $25/year to become a member (which gives you weather radar and flight tracker powers). Source: Watch Duty
🔥 Wildfire Lookout 🔥
The wildfire situation in the West is just insane right now. It seems that every time one big blaze starts to die down and reaches containment, another one pops up and grows even larger. Under the Trump administration’s full-suppression regime — which seeks to extinguish every fire, even those in wilderness that don’t threaten homes or lives — it all becomes a giant and deadly game of whack-a-mole.
In Utah, for instance, the Cottonwood Fire reached 95% containment after burning through more than 97,000 acres; the Babylon Fire in Bears Ears National Monument then grew to 107,000 acres before being contained; and now the Widemouth 2 Fire has exploded to 121,226 acres, and has taken the lives of two firefighters aboard a helicopter that crashed this past weekend.
The Northwest is especially scary, with over 2 million acres burned so far this year. Current fires include the Big Grass Fire straddling the southern Oregon-Idaho border that had burned through more than 541,000 acres as of Monday morning; the Rowe Creek Complex northeast of Bend, Oregon, at 368,000 acres; the Grasshopper Fire, on the east slopes of Mt. Hood; and the Little Giant and Sinlahekin Fires in Washington, at 111,000 and 143,000 acres, respectively.
A small sampling of other active fires in the West:
The Bug Fire and Fred Mtn. Fire are burning along the California-Nevada border just north of Reno, and are forcing evacuations.
The Gold Mountain Fire in the San Juan Mountains north of Ouray, Colorado, is at 90% containment after burning nearly 40,000 acres. But to the east of it, the Elk Fire jumped in size to over 7,000 acres, and is forcing evacuations in Hinsdale County.
The Frijoles Fire in northern New Mexico east of Pojoaque blew up to 4,158 acres over the weekend, and is at 0% containment. It is burning in the Pecos Wilderness Area.
📸 Parting Shot 🎞️
Mexican Hat rock in southeastern Utah with Raplee Ridge in the background. Jonathan P. Thompson photo.
Way back in 2003, Sandra Postel and I published a book entitled “Rivers for Life: Managing Water for People and Nature.” In the book we put forth a concept of “sustainability boundaries” as illustrated below.
The concept is based on the idea that each hydrologic basin supplies a renewable volume of water that fluctuates from year to year. Human appropriation (H) of this water can increase over time but must stay within the limits of natural replenishment and also leave a sufficient volume of water in situ to support freshwater ecosystem health (E) for the long term. Credit: Sustainable Waters
Over the two decades since publishing the book I have been advising water managers and governments in their efforts to apply this sustainability concept. I’ve also worked with my university students to document places around the world where some form of this concept has been applied, carefully evaluate what has worked, and assess why some applications have struggled.
This concept can be applied at various spatial scales and by various administrative agencies. For example, if you’re trying to manage water scarcity across the entire Colorado River Basin in the American Southwest, the framework would need to include the entire watershed that replenishes the river and its tributaries, and the important actors would include both the US and Mexican federal governments as well as the individual states embedded within the basin. If the area of concern is the New Mexico portion of the Rio Grande, the state’s agencies would work with cities and irrigation districts to apply the concept.
Based on what I’ve learned from real-world experiments and our global research, I’ll outline a simple 3-step framework for operationalizing this concept and successfully managing water scarcity.
Step One: Setting the Cap
The first step is to gain a sound understanding of how much renewable water supply is available on average within the basin of interest. This determination is used to set an enforceable limit, or cap, on how much water can to be allocated for human consumption (H in the diagram above). Physical scientists will play an essential role in advising administrative authorities on where to set the cap.
Importantly, the cap needs to be modified regularly. My recommendation is to adjust the cap at 5-year intervals, based on the prior five years of annual replenishment. If the previous five years have yielded above average replenishment, the cap level might be raised for the next five years. If on the other hand the recent 5 years have been drier than average, the cap will need to be adjusted downward. By adjusting every five years, water users can reap the benefits of good years yet avoid depleting rivers, reservoirs, and aquifers during bad years. A five year interval also provides water managers and water users with a reasonable planning horizon and much-needed certainty.
Step Two: Allocating the Water
Water sharing is one of humanity’s most challenging endeavors. It is immensely difficult to allocate water in a manner that is fair, inclusive, and equitable, but quantitative, clear, and enforceable allocation is absolutely essential in sustainable water management.
My recommendation is to allocate on a percentage basis. For example, the US and Mexican federal governments could work with each of their respective states within the Colorado River Basin and negotiate percentage allocations to each state. These allocations would limit each state to their respective percentages of the overall basin cap (see H in diagram above). In the Colorado River Basin, some of the states have received allocations on a percentage basin, but the cap set in 1922 in this basin was grossly overestimated, leading to dangerous overconsumption that has depleted rivers, reservoirs, and aquifers. A downward adjustment and reallocation among states is desperately needed.
Step Three: Learning to Live Within One’s Allocation
Once a cap is set and water users receive their allocations, the users need to figure out how to live within their respective limits. This is the most fascinating and exciting aspect of water management. Human beings are remarkably resilient and innovative when they embrace a challenge and design ways to live within limits imposed upon them. One of the great benefits of Steps One and Two is that they clearly signal what is available to water users, and what is not. In my experience, the capping and allocating of water supplies provides an immensely beneficial stimulus for change and adaptation. This is how a thousand flowers bloom, meaning there are many ways that individuals, communities, companies, and geopolitical entities can adjust to new limits. They can implement water conservation measures in cities and on farms, recycle urban wastewater, capture stormwater runoff, desalinate salty water, shift to less thirsty crops, or adopt myriad other strategies.
As just one example, cities dependent upon the Colorado River have embraced the reality that their water supplies have been substantially reduced in recent decades due to climate change and long-term aridification. Faced with this challenge to their water security, they have been able to reduce their total water use by 18% even while their populations have increased by 24%!
Back to Retirement
On New Year’s Eve of last year I mentioned in my last blog that I was retiring from my professional water work. I decided to publish this one additional post because I simply can’t stand to watch the massive failures in managing the ongoing water crises in the Colorado River and Rio Grande without saying something. What I’ve said here is a distillation of what I’ve learned over four decades of work on water scarcity. I offer it with the hope that those involved in management of these stressed basins might give it some consideration. The paper cited below summarizes nearly 50 case studies where this framework has been implemented in some form.
The DRI Cloud Seeding Research Program uses ground-based generators, which are designed and built by DRI and can be operated remotely. Most cloud seeding operations, including those run by DRI, use a compound called silver iodide (AgI) to aid in the formation of ice crystals. Silver iodide exists naturally in the environment at low concentrations, and is not known to be harmful to humans or wildlife. When storm systems move through one of our cloud seeding project areas, a solution containing a small amount of silver iodide is burned from ground-based generators or released from aircraft. Upon reaching the cloud, the silver iodide acts as an ice forming nuclei to aid in the production of snowflakes. Credit: Desert Research Institute
Click the link to read the article on the KJZZ website (Alex Hager). Here’s an excerpt:
August 7, 2026
The Central Arizona Project runs a 336-mile-long canal system that carries water from the Colorado River across the desert and into the Phoenix and Tucson areas. Since 2007, it has been part of a collaborative effort to run cloud seeding equipment in the Rocky Mountains. The program brings together water users that benefit from faraway snowmelt — like CAP, water agencies in Las Vegas and Los Angeles and major farming districts in Southern California — and agencies that manage water near the snowy mountains themselves. Now, the future of CAP’s participation in that collaboration is in question. At a meeting of the CAP board of directors on Thursday, the cloud seeding program got caught in the middle of bigger water politics.
“I know we’ve been funding this for almost 20 years, and now everybody’s trying to cut us off,” said Barbara Seago, a CAP board member representing Maricopa County. “So my take is, why would we keep funding anything that benefits Colorado if they’re willing to cut us off?”
[…]
In recent years, water agencies in Arizona, California and Nevada have sent about $1.5 million per year to upstream cloud seeding work. Those agencies say it is a small part of the solution to the complicated, politically fraught issue of supply-demand imbalance along the Colorado River, but it is still worthwhile. Technical experts on CAP’s staff explained the program to the board as a way to benefit the Colorado River system overall, even if it is difficult to draw a straight line between dollars spent on cloud seeding and water that physically flows into Arizona’s reservoirs and canals.
“If we have more water on the ground in the watershed,” said Nolie Templeton, CAP’s Colorado River policy and analysis manager, “Then I think everybody in the watershed is going to benefit because more of that water will make it into our rivers and streams.”
Central Arizona Project map via Mountain Town News
Denver Water’s 1.5 million customers are using less water than usual, but it’s still not enough to meet the utility’s goal of reducing water consumption by 20% amid this year’s drought.
“We’d need to be at 10,300 acre-feet of savings. Instead, we are at 1,300 acre-feet of savings, so behind where we want to be,” said utility spokesperson Todd Hartman.
That means the utility, which serves residents in Denver and many surrounding communities, has achieved barely a tenth of its target.
In Aurora, water officials said locals have made progress toward that utility’s 20% goal, but did not provide exact statistics.
While the utilities aren’t hitting their goals, they’re not ringing alarms yet. Both utilities have implemented Stage I water restrictions, and neither plans to move to the more severe restrictions of Stage II.
But that could change depending on how water levels look for the rest of the year — and Aurora Mayor Mike Coffman said it could be soon. In a Facebook post, Coffman wrote that the city is “now teetering on having to move to Stage II drought restrictions that, if enacted, will reduce all outdoor irrigation from two waterings a week down to one, killing off most lawns completely. According to [Kirby] Shedlowski, however, Stage II restrictions are not yet on the table. She said Aurora Water staff would have to recommend that shift to the Aurora City Council, which hasn’t happened yet.
From Tishana ‘Tish’ Cano at the Greeley Water & Sewer Department:
“Here is a land where life is written in water.” Thomas Hornsby Ferril, named Colorado’s poet laureate in 1979, could not have composed a better description of the agricultural community founded at the confluence of the Cache la Poudre and South Platte Rivers. In April 1870, a group of far-seeking settlers after a long four-day train ride from New York City and other points back East. Their goal was to create a new way of life on the dry and desolate plains of northern Colorado. Water was the key – and in 1874, a conflict with upstream irrigators of the agricultural community of Fort Collins created a flashpoint in Colorado water law and the American West. Both sides met “half-way” near present-day Windsor and launched an iconic, heated debate over western water rights. With guns used in the Civil War at the ready, the parley led to the birth of western water law – the Doctrine of Prior Appropriation.
Authors Gregory J. Hobbs, Jr. and Michael Welsh describe the triumphs and challenges of Greeley’s water history, from its 1884 artesian well in City Park to its 1907 mountain water system. The book chronicles the Colorado-Big Thompson Project of the 1930s and the Milton Seaman Dam and Reservoir construction in the 1940s. Hobbs and Welsh describe the foresight and tenacity of creative men – David Boyd, Henry C. Watson, Delph Carpenter, W.D. Farr, Harold Evans, and others – who shouldered the work and pointed the way to identify, acquire, and deliver affordable water to Greeley for more than a century. “Plan for others as they have planned for you” guides and unites the actions of our story of Greeley Water.
From the Rocky Mountain American Water Works Association:
Public works agencies rarely have time to reflect on their accomplishments and lessons learned, as they pursue on a daily basis their operations, maintenance, and plans for future growth. Yet that retrospective is what the City of Greeley Water Utilities Department, with its century and one-half of service to the community, decided to engage with the research and publication of Confluence: The Story of Greeley Water (2020).
Harold Evans, chairman of the Greeley Water and Sewer Board for the past two decades, believed that those whom the utility served would benefit from a comprehensive analysis of the origins and development of an organization that began before Colorado statehood, and one that has grown over time by addressing the cycles of abundance and scarcity of water that define the Headwaters State.
Joining the team of researchers and writers in 2015 were Gregory J. Hobbs, Junior, a retired associate justice of the Colorado State Supreme Court, often considered the most knowledgeable member of the high court in matters of water law and policy, and Michael Welsh, a professor of history at the University of Northern Colorado, whose decades of teaching and scholarship included studies of the U.S. Army Corps of Engineers in the Southwest and on the West Coast.
This team explored the range of issues and tasks of a municipal water system that began in the summer of 1870 with a single irrigation ditch on the Cache la Poudre River that conveyed water to the fledgling Union Colony (later to become the town of Greeley). As the population increased and the economy evolved, the Greeley water utility added a community artesian well (1884); a mountain water treatment facility above Fort Collins at Bellvue (1907); and a storage facility on the North Fork of the
Poudre River known as Milton Seaman Reservoir (1945); the latter two remaining operational over a century later. Residents of the Colony, and their policies and regulations, also played an important role in the development of statewide and interstate water law. One example would be the enshrining in Colorado’s 1876 constitution of the “prior-appropriation doctrine.” In addition, a Greeley native, Delph Carpenter, who had been employed as a youth inspecting the community’s ditch system to guard against violation of its rules, became an authority on the collaborative features of western water law. Carpenter would be tasked by the U.S. Commerce Secretary, Herbert Clark Hoover, with a key role in the drafting of the Colorado River Compact.
That agreement would permit a group of Greeley and Colorado water professionals a decade later to approach the U.S. Bureau of Reclamation to confront the severity of the Great Depression and the Dust Bowl by means of the Colorado-Big Thompson Project; a multipurpose facility that secured the future for farmers and ranchers of the South Platte River basin, and later the urban growth of the Front Range.
The Greeley Water & Sewer Board, originating in 1958 from the idea that local decisions in water belong with the people, and guided by those who understood and appreciated what water meant to Greeley, established the nonpartisan principles that inform the acquisition and development of water facilities. From the leadership of water pioneer W.D. Farr to today, with Harold Evans, who has a background in Civil Engineering, the Board has possessed expertise and foresight that contributes to Greeley’s good fortune with its most precious resource.
What began with that first ditch has now become a network of multiple reservoirs in four river basins, and prize-winning water pollution-control facilities. The City of Greeley also has taken the lead in water efficiency & quality, working with state and federal partners to replace aging lead pipes, and to institute an advanced metering system and residential and commercial “water budgets” that keep utility customers informed of their use patterns and the value of conservation in times of drought. Once the first volume on the story of Greeley water appeared, the water utility continued to provide domestic water and wastewater treatment to its network of communities. The City also pursued regional cooperation with the municipalities of Fort Collins, Loveland, Windsor, and Evans. Greeley maintained its partnership with the Northern Water district, in particular its Chimney Hollow Reservoir, which will store additional supplies for a dozen water organizations that own water rights in the CBT system that are not reliably accessible in times of need.
From that recognition in 2020 that the story of Greeley water had not ended came a new edition in the summer of 2026, written to incorporate the purchase of water rights to the vast underground aquifer in far northern Colorado known as the Terry Ranch Project. Other dimensions of the utility’s operations addressed in the second edition of Confluence are the expansion of the “non-potable” water system for use in public and private spaces; the application of sophisticated information technology; and the advanced-planning functions of the “Integrated Water Resources Program,” which identifies scenarios and options for a wide variety of challenges and opportunities in water-resource management decades into the future.
It is our hope that this new look at an old story helps residents and businesses of Greeley and surrounding communities realize how important their water supplies are to their security and prosperity. In 1941, in the midst of a world at war, and as the decade of the Dust Bowl neared an end, Greeley’s leaders embraced a simple but compelling idea: “To plan for others as others have planned for you.” Wise words for their time, and wise words for ours now.
More than 300 Mountain whitefish were found dead by Colorado Parks and Wildlife on the lower stretch of the Elk River nearly two weeks ago. The fish kill prompted an immediate response by CPW, which implemented a voluntary fishing closure that remains in place.
“While difficult to see, this type of event was expected given the extreme drought conditions this year,” said CPW Northwest Region Senior Aquatic Biologist Ben Felt. “Mountain whitefish are especially vulnerable to high temperatures and low dissolved oxygen levels. Implementing this closure allows CPW to continue protecting this important native species by reducing angler pressure in this area.”
[…]
The shutdown spanned from the Christina State Wildlife Area, about 9 miles north of Steamboat Springs, downstream to its connections with the Yampa River. The fish kill was discovered July 19, and CPW said the cause was extreme drought conditions. During its investigation, CPW measured river temperatures as high as 82 degrees…CPW said temperatures had likely exceeded 80 degrees in the days leading to the fish kill. The Mountain whitefish is one of two native sport fish in Colorado. The other is the cutthroat trout. The fish is endemic to the White and Yampa River watersheds. However, in recent years, due to consistent high temperatures, low dissolved oxygen levels and non-native predatory fish, the whitefish has struggled to survive in the Yampa River. A prior drought in 2002 significantly impacted the Mountain whitefish population. A mandatory fishing closure is in place for the Yampa River for the 0.6 miles between Stagecoach Dam and Stagecoach State Park. Two voluntary closures are also in place on the Yampa River. The first is from the northern boundary of Sarvis Creek State Wildlife Area — about 1.7 miles downstream of Stagecoach Reservoir — extending 3.3 miles through the Bureau of Land Management portion of the river. The second is from the upstream boundary of Chuck Lewis State Wildlife Area to the western edge of Steamboat’s city limit. There is also a low water warning at Yampa River State Park.
this 16 inch long Mountain whitefish (Prosopium williamsoni) was caught and released in the McKenzie River near the town of Blue River, Oregon on September 1, 2007. By Woostermike at English Wikipedia – Transferred from en.wikipedia to Commons by OhanaUnited., Public Domain, https://commons.wikimedia.org/w/index.php?curid=5099696
On July 13th, the Colorado River District, in partnership with the Colorado Water Trust and the Yampa River Fund, began releasing water from Elkhead Reservoir to mitigate the impacts of extreme drought and critically low streamflows in the Yampa River Valley. Beginning with a release of 10 cubic feet per second, the releases are part of the Yampa River Reservoir Release Program, a 2,000-acre-foot pool first established in 2021 with funding from the Colorado River District’s Community Funding Partnership. The program is designed to reduce drought-related pressure on agricultural producers while supporting river health and aquatic habitat.
“While we’re experiencing exceptionally difficult drought conditions, the story of 2026 is neighbors and water users working together. No single reservoir, organization or water user can solve this alone,” said Hunter Causey, Chief Engineer for the Colorado River District. “By coordinating releases, operations and water use across the basin, we can stretch a limited supply further and provide meaningful benefits for agricultural producers, local communities and the river.”
Below-average snowfall and persistent summer drought have reduced streamflows and increased water temperatures throughout the Yampa River Basin. Releases through the Yampa River Reservoir Release Program are intended to support agricultural water users, help delay or prevent a call on the river during periods of critically low flow, and benefit designated critical habitat for four endangered fish species. Releases are expected to increase in the coming weeks and continue through July.
“The Colorado Water Trust is an environmental nonprofit, and our work is keeping water in rivers,” said Blake Mamich, Programs Director for the Colorado Water Trust. “In a drought this deep, that same mission means showing up for agriculture. Coordinating closely with the River District and the Division of Water Resources, we can time these releases so a single pool of water helps irrigators extend a tough season and keeps water in Yampa for habitat and fish.”
“This is a difficult year for producers throughout the Yampa Valley, and we wanted to be part of a practical solution that helps the broader community,” said Yampa Basin rancher Matt Boeddeker of Lily Park Land & Cattle. “Water users across Colorado are making hard choices and working together to stretch limited supplies, and like them, we hope to help our neighbors complete critical irrigation and reduce the immediate impacts of drought.”
The Yampa River is primarily supplied by snowmelt from the Flat Tops and Gore Range and flows through agricultural areas of northwest Colorado before joining the Green River in Dinosaur National Monument. During dry years, coordinated releases from Stagecoach and Elkhead reservoirs supplement streamflows for agricultural water users, river habitat and endangered fish. The Colorado River District and its partners will continue to monitor streamflow, water temperature, irrigation demand, and habitat needs, and will adjust releases as conditions warrant.
The Moffat County Planning and Zoning Commission voted Wednesday to begin studying how data centers relate to the county’s existing zoning rules, stressing that no data center has been proposed and no decision was made about whether such facilities should be allowed. The commission approved Resolution PC2026-01, initiating a public review of the county’s zoning resolution. It also directs planning staff and commission members to research possible regulations for data centers. The action did not approve or reject a project, change the county’s zoning code, impose a moratorium or commit the county to allowing data centers. Instead, it opened what county Planning Director Candace Miller described as a process to understand the industry and prepare the county in case an application is submitted…Miller said the Planning Department has received no application, speculative proposal or other specific data center plan. She said she brought the issue forward after observing discussions in communities across the country and determining that Moffat County’s zoning resolution does not specifically identify or regulate data centers. The county’s lack of a clear classification leaves unanswered questions about whether different types of data centers would be permitted, conditional or prohibited uses and which zoning districts could be appropriate.
This article originally appeared on Inside Climate News, a nonprofit, non-partisan news organization that covers climate, energy and the environment. Sign up for their newsletter here.
Water users in the American Southwest confronted on Friday the strong possibility that cities and farms in the region must reduce Colorado River use by hundreds of billions of gallons after the Trump administration released a new management plan for the coming decade.
The document, published by the federal Bureau of Reclamation, outlines a 10-year management approach that could adjust to changing hydrological conditions that affect the river’s flow, with operations updatable every two years. The agency proposed cuts in water allotments originally suggested by Arizona, California and Nevada, which make up the river’s Lower Basin. Colorado, New Mexico, Utah and Wyoming, the region’s Upper Basin, could make voluntary conservation measures.
Interim guidelines and drought contingency plans agreed upon by the basin states in 2007 and 2019 are set to expire in 2027 and negotiations for a new agreement due this year have stalled, with the states missing repeated deadlines to come to a consensus.
But the Bureau of Reclamation operates much of the river’s infrastructure, including the Hoover and Glen Canyon dams, which form Lake Mead and Lake Powell, the nation’s two largest reservoirs. A federal record of decision finalizing operations on the river for the next two years will follow the final environmental impact statement Reclamation released Friday.
“This plan strikes a balance between flexibility and predictability for the Colorado River system that is vital to the 40 million people who rely on it given unprecedented hydrologic conditions and the potential for considerable impacts on water users,” said Andrea Travnicek, Interior’s assistant secretary for water and science, in a statement accompanying the plan’s release. “It also allows a new flexibility to respond to changing conditions and potential consensus.”
The agency is considering releases from Lake Powell, the reservoir near the border of Utah and Arizona that delineates the upper and lower basins, ranging from 5 million to 12 million acre feet to the downstream states (one acre foot can supply about two to four households for a year). The Lower Basin, including Mexico, could take steep cuts in their water allocations, potentially losing 1.5 million acre feet in both 2027 and 2028.
Under such a scenario, Arizona would lose 760,000 acre feet of its allotment from the river, California 440,000 acre feet and Nevada 50,000, following a proposal submitted by the Lower Basin.
But beyond 2028, Lower Basin cuts could reach up to 3 million acre feet.
The Arizona Department of Water Resources called that figure “unacceptable” in a statement published online. “Such reductions would devastate Arizona’s water users and its economy,” the agency said.
Reclamation appears to be seeking voluntary Upper Basin reductions of up to 200,000 acre feet, and discussed moving water from federally managed dams in the basin downstream, as hydrology allowed.
“The proposal responds to a fundamental reality: the Colorado River no longer reliably produces enough water to support all the uses and expectations built around it,” said JB Hamby, California’s Colorado River Commissioner, in a statement. “That challenge is shared across the Basin, and addressing it requires specific, measurable reductions in water use by every state.”
A spokesperson for the Colorado Department of Natural Resources said the state is “analyzing” the document.
Upper Basin governors said in a statement that they were “encouraged that new operating guidelines will better reflect existing water supply, which must underpin any practicable plan going forward.”
The Colorado River is perhaps the most climate-stressed waterway in the U.S. It provides water to between 35 and 40 million people across seven Western states, 30 tribes and two Mexican states as it wends its way through the Southwest, home to some of the country’s most arid and drought-stricken landscapes. Millions of Westerners also rely on the electricity the Hoover and Glen Canyon dams generate.
The 1922 compact between the river’s users assumed roughly 17.5 million acre feet of water was available to the two basins and Mexico, but the historical average of its natural flow has only been roughly 14.7 million acre feet. That number plummeted to an average of 11.2 million acre feet between 2020 and 2024, according to provisional data from Reclamation.
In that same time period, the agency calculated average use and evaporative loss across the basin at just over 13 million acre feet.
“The operational ranges that Reclamation put forward, they’re the right things that we need to be doing in order to fix the supply and demand imbalance,” said John Berggren, regional policy manager at Western Resource Advocates. “But it is just a range, and what they actually do over the next two years or within any given year, that will matter if they’re actually gonna be able to bring the system back into balance.”
Berggren hopes the short-term certainty this plan provides can unstick negotiations between the states.
“I hope [the basin commissioners] don’t just keep doing what they’ve been doing for the last two or three years, ’cause that clearly hasn’t worked,” he said. “I hope they try and take this opportunity to change things up. Let’s try something new and hopefully get to a seven-state agreement.”
Reclamation’s final environmental impact statement was initially supposed to codify the management plan the basin states have yet to agree on. Though deadlines for those negotiations have come and gone, Reclamation is still holding the door open for a deal, which is widely regarded as the most productive path to a durable long-term operating agreement for the river.
“Let’s try something new and hopefully get to a seven-state agreement.”
Negotiations are stalled over whether cuts should be mandatory across the entire basin. After overdrawing from the river for decades, the Lower Basin now uses less water than it is apportioned, according to federal accounting; it wants to see future cuts shared across the seven states. The Upper Basin, which has never used the full amount of water it is legally entitled to, has fiercely contested demands for it to make mandatory cuts, offering voluntary conservation measures instead. The states that make up that basin contend that variable environmental conditions, such as this year’s record-low snowpack, already limit how much water they use.
Even with some idea of federal management options in place, the absence of a seven-state agreement further increases the prospect of states dependent on the Colorado River suing one another in cases that would be adjudicated by the Supreme Court.
Still, proposing to manage the river in a way that is adaptive to hydrological conditions is “the kind of agreement that we are going to need to really think about long-term how do we live in this basin with much less water moving forward,” said Celene Hawkins, Colorado River program director at The Nature Conservancy.
Hawkins hopes this spurs a seven state agreement “so that, ultimately, we can do really good work for communities and for the river itself.”
Denver Water relies on a network of reservoirs to collect and store water. The large collection area provides flexibility for collecting water as some areas receive different amounts of precipitation throughout the year. Image credit: Denver Water.
Denver Water’s reservoir storage system, holding water supplies carefully built up over many years, is getting hit hard this summer as hot, dry weather drags on and customers use water.
As of July 31, 2026:
Dillon Reservoir in Summit County, Denver Water’s largest reservoir, was down 20 feet and expected to drop another 8 to 10 feet by Labor Day.
Williams Fork Reservoir near Kremmling was about one-third full; by the end of summer the dam’s hydro turbines won’t be able to produce hydropower.
And Antero Reservoir near Fairplay, considered an emergency drought storage reservoir, was dry after the water was moved out of it in May and June.
Overall as of July 31, Denver Water’s reservoirs stood at 75% of capacity, more than 20 percentage points down from the 96% they’re normally full at the end of July.
And reservoir levels will continue to drop as customers use water.
By April 1, 2027, right before the start of next year’s runoff, Denver Water’s reservoirs are expected to be merely 60% to 62% of capacity — the lowest they’ve been on April 1 since the 2002-2003 drought.
“Denver Water’s robust reservoir system serves as our water ‘savings account,’” said Nathan Elder, Denver Water’s manager of water supply.
“This year we are making significant withdrawals from our savings — and we don’t know how long the hot and dry weather conditions will last, or what this winter’s snowpack will look like. We need customers to do their part and reduce water use inside and outside, so that we won’t need to implement even more drastic restrictions.”
In order to stretch existing water supplies, Denver Water’s mandatory drought restrictions this summer limit outdoor watering to two assigned days per week. The utility’s regular summer watering rules also remain in effect, including no watering allowed during the day between 10 a.m. and 6 p.m. (Check assigned days and watering rules here.)
See how far Dillon has dropped:
Reservoirs play a critical role during droughts, as the stored water that was saved in the past is used to get through dry years.
In July, Denver Water customers used an average of 282 million gallons of water every day. In the winter, when there is no outdoor watering, Denver Water customers typically use about 110 million gallons per day.
Here’s a closer look at some of Denver Water’s key reservoirs:
Antero Reservoir
In May and June, Denver Water moved all the water out of the relatively shallow Antero Reservoir in Park County to avoid losing it to evaporation.
Antero’s water was sent down the South Platte River to Cheesman Reservoir, and, due to demand, almost all of that water has been used. Antero Reservoir is considered an emergency water storage reservoir that is used during drought years.
Antero Reservoir in Park County on June 30 without water. Denver Water used the water in the reservoir to meet customer demand due to record low snowpack and runoff. Photo credit: Denver Water.
This is the second time Denver Water has had to use all the water in Antero due to drought. The last time the reservoir was emptied to stretch water supplies in a drought was in 2002.
It is expected to take several years of average or above-average snowpack to refill Antero Reservoir.
Cheesman Reservoir
Cheesman Reservoir, located near Deckers along the South Platte River, opened in 1905.
As of July 31, Cheesman Reservoir was at 71% of capacity. The reservoir would have been even lower without the additional water moved from Antero.
Cheesman Reservoir on July 23, 2026, when it was at 74% of capacity. The reservoir is a critical storage site along the South Platte River near the small town of Deckers. Photo credit: Denver Water.
Cheesman’s water level as of July 31 was 26.5 feet down from full and the reservoir is expected to drop to 54% to 61% of capacity by April 1, 2027. During the drought of 2002-2003, Cheesman dropped all the way down to 29%, less than one-third of its capacity.
Dillon Reservoir
Dillon is Denver Water’s largest reservoir. Located in Summit County, it opened in 1963.
As of July 31, Dillon Reservoir was at 75% of capacity and down 22.5 feet. The reservoir is expected to drop another 8-10 feet by Labor Day.
At the end of July, Denver Water was pulling about 163 million gallons of water a day from the reservoir to meet the water demands of its customers in Denver and surrounding suburbs.
By next spring, Elder expects Dillon will be down to 50% to 60% of capacity. During the drought of 2002-2003, Dillon was down to 48% of capacity.
Dillon Reservoir in Summit County on July 20 looking west at the Tenmile Range in the background and Dillon Marina on the right. The reservoir is down 21 feet and was at 77% of capacity on July 24. Photo credit: Denver Water.
As for the record low? Dillon bottomed out at 35% of capacity in 1978 during a drought.
Gross Reservoir
Gross Reservoir is a critical water storage site in Boulder County. The dam is currently under construction and water levels have been lowered in the reservoir to allow that construction work to move forward safely.
As of July 31, Gross Reservoir was at 53% of capacity.
Gross Dam in Boulder County on June 2, 2026. The dam is under construction as part of the Gross Reservoir Expansion Project. The project is designed to nearly triple the capacity of Gross Reservoir to store more water to get through times of drought. Photo credit: Denver Water.
The Gross Reservoir Expansion Project is designed to nearly triple the size of Gross Reservoir, which will allow Denver Water to store more water to help get through times of drought. The project hit a major milestone in June 2026 when workers placed the last of the roller-compacted concrete steps that make up the higher dam.
Williams Fork Reservoir
The Williams Fork Reservoir, near Kremmling in Grand County, as of July 31 was 36% of capacity and down 52 feet.
The reservoir’s boat ramp was closed this summer due to low water levels caused by drought. Kayaking and other hand-paddled watercraft are still allowed.
Watch a video of conditions at Williams Fork this summer:
By the end of summer, the water level in Williams Fork is expected to be so low that the dam’s hydropower plant will no longer be able to generate power. The reservoir is expected to drop to 6% to 15% of capacity by April 1, 2027.
A group of visitors walks down the boat ramp at Williams Fork Reservoir on July 20. The ramp was closed this summer due to low water levels caused by drought. Photo credit: Denver Water.
Denver Water does not use Williams Fork to store water for the metro area. Instead, the reservoir’s water is used to exchange, or offset, water that is stored in Dillon Reservoir in order to meet downstream water rights obligations on the Colorado River.
Meadow Creek Reservoir
Denver Water’s smaller reservoirs are also affected by the drought, such as the Meadow Creek Reservoir near Granby in Grand County, a popular dispersed camping and fishing site.
Denver Water took advantage of this year’s low water conditions and further lowered the reservoir to just 6% of capacity in order to conduct an inspection and construction project on the dam.
Meadow Creek Reservoir in Grand County is being lowered this year for a construction project on the dam. Photo credit: Denver Water.
Water released from Meadow Creek was used for irrigation in Grand County, and 350 acre-feet of water was moved to storage in Gross Reservoir.
While Meadow Creek is not a primary storage site, its fate this summer demonstrates some of the challenges and complexity that comes with managing a water system while juggling the impacts of drought, maintenance requirements and the need to deliver to 1.5 million people in Denver and surrounding suburbs.
Looking ahead
While having Denver Water’s overall reservoir system at 75% of capacity as of July 31 may not sound too bad, Elder says customers need to act now to conserve as much water as possible.
And while there has been talk of a strong El Nino, summer monsoon rains and big winter storms on the horizon, Elder notes that “hoping for more rain and snow” is not an actual strategy for managing through a historic drought.
Also, 90% of the water Denver Water collects comes from mountain snow, meaning that even a strong monsoon this summer won’t do much to stem the fall in reservoir levels.
The bottom line is that no one really knows what next year’s water supply outlook will be until next winter — and more critically, until next spring’s runoff season, when the snow starts to melt and water flows into the reservoirs.
Right now, Elder’s team has calculated Denver Water’s water supply outlook through April 1, 2027, right before the next spring runoff begins.
And the team is forecasting that by then, Denver Water — and its customers — will be facing reservoir levels of just 60% to 62% of capacity, the lowest since the 2002-2003 drought.
“We have a strong reservoir system, but we are going through a lot of water this summer and reservoir levels are dropping,” Elder said.
“Every drop counts, and every action customers can take to conserve water inside and outside will help stretch our water supply. This is the time to Use Only What You Need.”
Denver Water’s decade long Use Only What You Need campaign found humor in conservation. Photo credit: Denver Water.
Lake Powell and Wahweap Marina back in August 2021, when the surface level was at about 3,549 feet. It’s now at 3,522 feet, just above the all-time low reached in April 2022. Jonathan P. Thompson photo.
The feds stepped in after the seven Colorado River states failed to agree on a new plan to replace the 2007 Interim Guidelines and the 2019 Drought Contingency Plans, both of which expire at the end of September. The states will continue to negotiate, and a seven-state consensus deal would take precedence over the federal plan.
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
Those plans were aimed at bringing overall demand back into balance with supply, which is not easy given that a warmer and drier climate is continually diminishing the already over-allocated river. While the document appears to have been completely scrubbed of any references to “climate change” or “global warming,” it does obliquely acknowledge that the cause of the current woes is a heating planet with passages like this one: “Imbalance between water supply and demand will be exacerbated by increasingly likely low-runoff conditions: The Basin is experiencing increased aridity due to climate variability, and long-term drought and low-runoff conditions are expected in the future.”
The natural flow flow at Lees Ferry, which is a calculation of what the Colorado River’s flow would be without any upstream dams, diversions, or human consumption. Land Desk graph using Bureau of Reclamation data.
While the supply-demand balance is the central objective, a secondary one is to “protect critical elevations” at Lake Powell, which is to say they will take significant measures to keep the surface level from dropping below 3,500 feet, which provides a 10-foot buffer above minimum power pool. This not only preserves hydropower output, but it also avoids relying on the river outlet works for sustained releases. Meanwhile, the feds didn’t even consider proposals to drain Lake Powell or to build bypass tunnels around Glen Canyon Dam to allow for low-level water releases. [ed. Note that the USBR EIS is constrained by the “Law of the River”, the suite of agreements and legislation that details what the agency can do to operate the river.]
I should be posting articles here about the huge news Friday. But it wasn’t huge, it was boring and predictable. So is all the coverage. So are most of the people, the same people who get quoted over and over and over. Nothing but conventional wisdom, no ideas. Not a quotable… pic.twitter.com/A00bYHYhJH
Sorry, Ed. I’d like to help, but there’s not a whole lot of interesting things to say about this!
The release was met with much pomp and circumstance, along with a lot of hand-wringing and teeth-gnashing, though it didn’t contain any major surprises or changes from the draft EIS released earlier this year. The big takeaway, or at least the most talked-about one, is that the Upper Basin states will not be subjected to mandatory water use cuts, though they are being asked to cut about 200,000 acre-feet annually on a voluntary basis. The Lower Basin states, meanwhile, will be required to cut their consumption, perhaps by as much as 3.6 million acre-feet per year, depending on reservoir levels. That’s nearly half of those states’ Colorado River Compact allotment.
The cuts would be distributed based on water right priority, which would hit Arizona the hardest. That’s not because Arizona’s rights are junior to everyone else’s, but because their biggest straw — the Central Arizona Project — has junior rights, which the state accepted in exchange for federal funds to help build the thing and to help power its energy-sucking pumps.
Lower Basin leaders are, generally, livid. Arizona Gov. Katie Hobbs said the feds’ plan “still contains unacceptable options that include the federal government forcing Arizona to take the majority of draconian water cutbacks.” Nevada Gov. Joe Lombardo said the plan “seeks to impose unrealistic reductions on Nevada and our water users … {that} could have devastating economic and environmental impacts … .”
The response from the Upper Basin has been a more measured and mixed, but is predominantly one of relief at being spared mandatory cuts. But any celebration is tempered by the fact that nature is forcing its own cuts in the Upper Basin; irrigation canals are shutting down all over the place, long before the growing season is over, and some irrigators have received only a fraction of their usual allotment this year. Plus, the plan leaves open the possibility of draining Upper Basin reservoirs such as Flaming Gorge, Blue Mesa, and Navajo to buoy levels at Lake Powell. That will affect recreation and leave less water for irrigators and other users in the Upper Basin.
Meanwhile, advocacy groups are generally unhappy about the plan’s short-term approach, its focus on saving dams rather than the river, its willful ignorance of climate science, and its failure to force cuts on all river users. Even more dismaying is the fact that it doesn’t even cap Upper Basin consumption at current levels, implicitly allowing new diversions and water projects that would throw supply and demand further out of balance. “The Colorado River needs consequential and systemic change that confronts the ecological, political, and legal chaos caused by climate change and Glen Canyon Dam, but Reclamation’s plan is just ‘lather, rinse, repeat’ of past failed policies,” said Gary Wockner, of Save The Colorado, in a written statement.
This sentiment reveals a sort of paradox on the Colorado River: All of the water that flows to the Lower Basin and the industrial-scale alfalfa farms in the Imperial Valley also runs through the Grand Canyon, keeping that ecosystem healthier. Meanwhile, any water that the Upper Basin consumes or that is held back in Lake Powell to protect the dam’s integrity is water that doesn’t flow through the canyon.
There’s no indication that the Trump administration is punishing the Lower Basin states, however. It’s far simpler logistically to distribute and enforce mandatory consumption cuts in the Lower Basin because there are fewer diversion points, each of which is far larger than in the Upper Basin. Also, the 1928 Boulder Canyon Project Act made the Interior Secretary the “water master” on the Lower Colorado River, giving the feds greater authority to order shortages.
One question that remains unanswered is how reduced releases from Glen Canyon Dam would play out in the context of the Colorado River Compact, which dictates that the Upper Basin “not cause the flow of the river at Lee Ferry to be depleted below an aggregate of 75 million acre-feet” for any 10-year period. There’s a high likelihood that the 10-year aggregate flow will drop below 75 maf in the next year, giving Arizona possible grounds to sue and putting the interpretation of the clause into the hands of the Supreme Court.
Here are a few more details from the final EIS:
Glen Canyon Dam annual releases, which will be determined on Oct. 1, will range from 6 maf to 12 maf. This could drop as low as 5 maf if necessary to defend the “de facto deadpool” Lake Powell surface level of 3,500 feet. That would reduce flows in the Grand Canyon to below 7,000 cubic feet per second, and cause Lake Mead to drop further.
The maximum shortages/cuts for the Lower Basin would be 3.6 maf distributed as such:
Arizona: 1.96 maf
California: .9 maf
Nevada .21 maf
Estimated shortage impacts by water user type under various shortage conditions:
Acreage range of Indian Trust lands in the Lower Basin that would be fallowed under various shortage conditions:
AZ: 6,535 to 67,375 CA: 0 NV: 0
An alarming quote about how junior water rights holders are going to face shortages no matter what: Under the preferred alternative, “… for all Arizona, California, and Nevada junior entitlements (AZ CAP NIA-A and NIA-B; AZ CAP Indian, M&I, and 4(I); CA P4; and NV P8 priority groups) there are no potential futures in which >80% of normal domestic water delivery occurs.”
Lower Basin Tribal water users with present perfected rights would receive at least 80% of normal water deliveries in at least 90% of years across 2027-2039.
Glen Canyon Institute Executive Director Eric Balken observing the Cathedral. Photo credit: Glen Canyon Institute
During 75% of years under preferred alternative, Lake Powell’s level would be below 3,550 feet during at least 90% of months, meaning Cathedral in the Desert would be visible and accessible.
The EIS’s authors summed up the challenges with all of this — and the perils that may lie ahead — in one paragraph, writing:
Last winter’s meager snowpack near Silverton, Colorado, on March 14, 2026. Researchers analyzed Western snowpack data from the next day, March 15, to assess the influence of climate change on the historic snow drought and to project how future warming could affect the likelihood of similar events. Photo: Mitch Tobin/The Water Desk.
The American West’s historic snow drought in 2026 depressed skiers, heightened wildfire risks and constrained already scarce water supplies.
Was this extreme event just a stroke of bad luck in a region where snowfall naturally varies from year to year?
Or did the record-low snowpack bear the fingerprints of climate change?
A new study in the Proceedings of the National Academy of Sciences concludes that global warming more than quadrupled the odds of the West’s snow drought when compared to the preindustrial climate, before human greenhouse gas emissions began heating the planet.
In the Upper Colorado River Basin, where snowmelt supplies most of the water in a river that serves tens of millions of people and irrigates millions of acres of farmland, climate change’s estimated influence was even greater. Researchers concluded the snow drought was about 14 times more likely, although that estimate is more uncertain because the event was so exceptionally rare, even in today’s warmer world.
Looking ahead, scientists project that snow deficits as extreme as the West’s 2026 drought could become the norm by the end of the century if emissions continue to climb.
In the 2020s, a Westwide snow drought as bad as last season’s has about a 1-in-10 chance of occurring each year, so it’s still not the new normal. But the odds rise dramatically under the “moderately high” emissions scenario used in the study: the annual probability more than triples to about 1-in-3 by the 2050s and soars to nearly 9-in-10 in the 2090s.
Hydrologist Adrienne Marshall. Source: Colorado School of Mines.
I spoke with the study’s lead author, Adrienne Marshall, a hydrologist and assistant professor at the Colorado School of Mines. Excerpts from our July 23 conversation are below, edited lightly for clarity and brevity.
“Where we are is serious,” Marshall said. But she emphasized that a West where profound snow droughts are routine is not a fait accompli, because future greenhouse gas emissions are not set in stone.
“These are not predictions of what will happen in the future,” Marshall said. “I think this type of work is most useful if it is motivational and not discouraging.”
How would you summarize the most important findings of the study?
I think our most important findings here are that we were able to look at the extent to which this last year’s unusually low snow conditions were attributable to human-caused climate change.
We found that across the Western U.S., the low snow conditions we saw were about four and a half times more likely because of climate change that we’ve experienced to date. That is equivalent to a water volume that’s about the size of Lake Mead. If we think about a rare event in a world without human-caused climate change and a rare event in the world we’re living in, the amount of snow we’re missing is about the size of Lake Mead.
In the Upper Colorado River Basin, the snow drought was more extreme, so we find a higher “risk ratio,” meaning an increased probability due to human-caused climate change.
Did these findings surprise you?
The thing that surprised me was the magnitude. I wasn’t surprised to see that these events seemed to be attributable to human-caused climate change. I was a little bit surprised to see numbers that were quite as big as they were.
The study says that climate change made the snow drought about 4.4 times more likely. Could you explain that further? What exactly does that mean?
To dig into what that “more likely” means, people might have heard before of things like a 100-year rainfall event or a 100-year flood event, where we can say we would expect an event like this one to have maybe a 1% chance of happening each year. That would be a 100-year event.
So we took that approach with unusually low snow conditions. We used some models that were run for the 1850 to 1900 period, so that’s our period without human-caused climate change. And we saw that, in that period, the snow conditions we had this year would’ve been about a 1-in-30-year event. Then when we use those same models for about a 20-year period encompassing the world we’re living in now, we see it’s about a 1-in-7 event. And then we divide those two numbers, so 30 divided by about seven, to get that approximately four and a half times more likely value.
Skiers at Purgatory Resort in southwest Colorado on February 8, 2026. Photo: Mitch Tobin/The Water Desk.
Why is climate change making snow droughts like this much more likely?
In the most basic sense, there are two things that can cause snow drought. One is warm temperatures, and then the other one is just not getting any precipitation at all. So when we have warm temperatures, we get precip that falls as rain rather than snow.
When we think about the impacts of climate change, we have a lot of certainty about increasing temperatures. We have very good evidence that temperatures have increased, and models agree really well that they expect temperatures to continue to increase. That also aligns with our basic physical understanding of the Earth system.
Precipitation is a lot more uncertain, so it’s harder to see clear trends in winter precipitation so far, and models tend to disagree more about how we think precipitation will change—at least in the Western U.S. So when we think about the impacts on snow, those warming temperatures giving us less snow are kind of a really clear climate signal while the uncertainty in the precipitation can muddy the waters, relatively speaking.
With this snow drought, it sounds like it was really primarily driven by temperature.
We haven’t quantified what was the contribution of temperature versus precip. But if we look at what was happening across the West this year, temperatures were really unusually high over much of the winter, with sort of an extraordinary heat wave in March. Precipitation was low, but not extraordinary across most of the Southwest. And then as we look up into the Pacific Northwest and British Columbia, we tend to see precipitation that was a little bit above average up there. Temperature: kind of extraordinary. Precipitation: more within a range of variability that we’re used to seeing.
Source: National Integrated Drought Information System.
The date you used was March 15. We often hear about people using April 1 as the key milestone for snow water equivalent (a measure of the snowpack’s water content). Why did you use March 15?
We used March 15, in large part, because this year it looks like that was approximately peak snow water equivalent—when we sum up how much snow was sitting there across the West. We thought that was a useful indicator of how much snow does a water manager have to work with, even if it was earlier than usual. I think doing the same analysis with April 1 would be interesting, too. The statistics get a little bit more challenging for more rare events. Because of that March heat wave, I think that we would see that April 1 snow would likely have been even more extreme, which could make the statistics a little bit more challenging—increase uncertainty, essentially.
The study also looks specifically at the Upper Colorado River Basin. Could you explain what the findings were for that portion of the West?
In the Upper Colorado River Basin, this event was especially extreme. Snow was really particularly low. Our best estimate here is that, in the world we’re living in now, the snow conditions this year were about a 1-in-140-year event in the Upper Colorado River Basin, so quite rare. In the world without anthropogenic (human-caused) climate change, we think that it would’ve been maybe a 1-in-2,300-year event. Once we start estimating events quite that rare, we get big uncertainty ranges. Then when we divide those two, we see that in the Upper Colorado River Basin, we think that this event was about 14 times more likely because of human-caused climate change. But there our uncertainty is really large.
The Gold Mountain Fire burns near Ridgway, Colorado, on July 1, 2026. Photo: Mitch Tobin/The Water Desk.
The study also looks ahead to the future and the climate continuing to warm. What should we expect going forward?
These results were quite sobering. We look at what we would expect to happen in a moderately high greenhouse gas emissions scenario. What we see is for the Western U.S., we estimate that an event this bad had about a 10% chance of occurring each year in the 2020s. By the time we get to the 2050s, that slightly more than triples. So every year we would have about a 30% chance of having snow at least this low. And then by the 2090s, that becomes 87% of years, so we would expect that most of the time the snow would be at least this low Western U.S.-wide. In the Upper Colorado River Basin, we also see increases, but because this event was so extreme, we never see it becoming the norm in the 21st century.
The really important caveat here is that these are not predictions of what will happen in the future. These are our estimates of what we would expect in a particular greenhouse gas emissions scenario. And there are other greenhouse gas emission scenarios that are better. We could emit fewer greenhouse gases than this and do better than what these projections suggest.
It seems like pretty clear evidence for the benefit of reducing emissions for the snowpack.
The analysis I’d like to do is to look at the other scenarios and say, “OK, how much better would it be?” We don’t quite have the data to make exactly that apples-to-apples comparison at the moment, but there’s ways to pursue that . . . Based on our understanding of this system, I would strongly expect that if we look at a lower-emissions scenario, we would not see those probabilities climb quite so high.
We often hear the question, “Is this the new norm or is this the new normal?” These data suggest that it’s not right now. Western U.S.-wide, it could be by end of century. So I do look at that and think, “Let’s try to avoid that.” [ed. emphasis mine]
Low water at Blue Mesa Reservoir, along Colorado’s Gunnison River, on July 1, 2026. Photo: Mitch Tobin/The Water Desk.
What do you hope the public and decision-makers take away from this study and the projections?
There’s three big takeaways I have in mind. One is that I hope it’s clarifying in terms of where we’re at right now in terms of the impacts of climate change. It’s relatively new that we can look at a specific snow year and say, “Here’s how much this was caused by anthropogenic climate change.”
The second impact is I hope it’s useful for adaptation so that individuals and utilities and water managers can look at this snow year and think seriously about what we might like to do to adapt to more snow years like this.
And then the third thing is to help motivate us to see if we can push emissions trajectories downwards and do what we can to avoid having more snow years like this to the extent possible.
To learn more about the opposite of snow droughts—known as snow deluges—see my 2024 Q&Awith Marshall about her research on California’s epic snowpack during the 2022-2023 winter.
This story was produced and distributed by The Water Desk at the University of Colorado Boulder’s Center for Environmental Journalism.
Upper Colorado River basins. (The border of Wyoming and Colorado is mislabeled.) (U.S. BOR)
Aurora Water doesn’t much care which two days in a week you water your lawn, amid this historic drought.
But if your irrigation system starts up on a third day in the same week, the water world equivalent of a Flock camera is watching. The “smart” meters on every Aurora property automatically sense a spike in water use, and alert Aurora Water to confirm the violation and send out a warning or fine.
With updates at 15-minute intervals, the meters also detect irrigation watering during hot daytime hours when that’s against the rules.
The water surveillance, which Aurora Water officials acknowledge many of their customers might not realize exists, is one key to Colorado’s third-largest city so far achieving its water-saving goals in a year with record-low snowpack and abysmal streamflows into mountain reservoirs. Aurora says its 400,000 residents are using 27% less lawn water than in 2025, and managed a 9% cut from combined indoor and outdoor use.
Maintaining or even improving those savings is crucial as Aurora Water’s reservoir system sits at 49% full at a time when it should be above 80%.
Denver Water, meanwhile, has seen only about a 5% cut of water use compared with its previous five-year average among 1.5 million city and suburban customers. When Denver Water enacted twice-a-week watering restrictions in the spring, it set a target of a 20% cut from five-year average use.
Denver’s customers are doing better when using Aurora’s comparison with 2025 only, Denver officials said.
“Versus 2025, total water use is currently down about 7% and outdoor use is down about 16%,” said Travis Thompson, Denver Water communications manager.
The state’s largest water agency says it is encouraged by other statistics showing customers are using 21% less lawn water than they would have expected in the run of 95- to 100-degree days the Front Range experienced in July. In a summer that sits in the top 1% hottest and driest on record, the agency says, that’s a laudable savings mark.
One difference: Aurora Water spent millions of dollars in capital getting smart meters on every customer tap, while Denver Water chose to spend more of its capital speeding up replacement of aging, dangerous lead water delivery lines. Denver’s enforcement of drought restrictions to date has relied on thousands of neighbor complaints about properties watering more than twice a week, during restricted daytime hours or other violations.
“We have a far bigger tool than they have for being able to detect when people are using water irrigation water when they’re not supposed to,” said Shonnie Cline, Aurora Water’s deputy director of water internal and external relations.
Watchdog groups such as the American Civil Liberties Union in the past have raised questions about privacy invasions from smart home devices, including electric and water meters monitored by utilities. Especially by combining information from multiple meters, hackers or other bad actors could watch patterns and learn when people are home or away, are cooking, taking showers or other personal habits.
Cline said a better analogy than a controversial Flock camera is to see a smart water meter as a personal fitness tracker. “It gives you data and you are able to identify patterns that can improve your overall health if you make changes,” Cline said.
Aurora points out the smart meters for every customer work both ways, as a protection from leaks and potential property damage. Customers are able to log on and track their own use at the same time the city sees it, and could recognize a home leak while away on vacation, for example. During droughts, the meters will be one key to helping maintain reservoir storage for the benefit of the whole community, Cline said.
“There is a definite footprint that goes along with the data that indicates irrigation is taking place,” Cline said. “We have that pretty locked in where we can see when somebody’s irrigating, and so that’s why it’s interesting, because even when we send a warning, people are like, ‘But I didn’t!’ And then we’ll show them the data, and they’re like, ‘OK, I can’t argue with you, right?’ “
Denver Water, while enjoying higher water storage rates at its mountain reservoirs that have seen better snowpack, is not satisfied with customer savings rates and is now shifting somewhat from “education” to “enforcement” mode.
Denver had sent out nearly 3,600 warning letters but only five fines by the beginning of August. Fines will ramp up now that customers know what the rules are and Denver Water knows more about where the problem customers are, officials said.
Aurora Water, by contrast, has issued 234 fines after sending out more than 2,500 warning letters, including 10 of the highest $2,000 fines to businesses and large irrigation consumers. Only three customers were issued a second fine at the $250 residential level, Aurora Water said, and none had been issued a third fine. Aurora’s fines total more than $70,000.
Now that Denver Water has weeks of data on actual water use during drought restrictions, the agency can focus its communications on suburban areas with bigger lawns that haven’t cut back, said Greg Fisher, the utility’s manager of demand planning. Some of those suburban customers have no idea it’s Denver Water that collects their mountain runoff and delivers it to their local water utilities.
With only 5,000 advanced meters installed for 250,000 taps, Fisher said, word of mouth enforcement confirmed by onsite visits from Denver Water employees will continue to be the standard for warnings and fines.
“We continue to rely on, and I think it’s a pretty inventive idea, of letting our customers report water waste violations,” he said. “Even with the water people out on the street, we can’t be everywhere. So giving our customers the ability to report has been pretty powerful and I think effective for us.”
Denver Water officials do not anticipate asking their board this season to approve the next drought stage that would take lawn watering down to one day a week and add other restrictions. Denver Water would have to change its rate structure again to charge more for lawn watering that does occur to make up for loss of revenue from restrictions.
Plus, the utility thinks it’s a longer-term challenge to convince customers to change habits and stay “on board” with drought restrictions in the middle of what could be a multiyear crisis, Fisher said.
“We have a long game,” Fisher said. “This thing’s going to last a minimum of 12 more months, in my opinion, save for some sort of record-breaking snowfall this winter. So we’re in it for the long haul. I think we need to continue to up the message as we see conditions change. But at the same time, we really need to support our customers and have them stick with us for that extended period.”
People are capable of change, Denver Water officials said. The last drought this severe for Front Range customers was 2002.
“Our customers are using 100 million gallons less per day this year than they did in 2002, which is just stunning,” Fisher said. “And that translates to being actually 14% higher in our reservoir storage now than we were in 2002, because of our customers’ efficiency efforts over the last quarter century. We’re feeling really good about that. And that’s with significantly more population … 200 to 250,000 more people.”
Every so often it just seems like a good idea to drop out of the wrangling over the future of water in the arid west and – just go down to the river itself. A good friend abetted this by taking me along on a float down the lower Gorge of the Gunnison River. My friend was fishing; I was just along for the ride, and reflecting on my 60th anniversary of first moving to the Gunnison River valleys and the Colorado River Basin in 1966.
The Gunnison Gorge is a Bureau of Land Management Wilderness Area just downstream from the Black Canyon of the Gunnison River National Park. In 1966 I was – typically for a posturban American – unaware of where in the world I was, and didn’t know that the Gunnison River is one of the larger tributaries of the Colorado River, meeting the river in Grand Junction, Colorado, with a median contribution there of around 1.5 million acre-feet of water, with around another million acre-feet consumed by users in the Gunnison Basin, mostly for agriculture. This year, the river carries a fraction of that, less than a fourth of what passed for ‘normal’ through the 20thcentury.
Like most upper Colorado River tributaries, the Gunnison River alternates for most of its course between settled green mountain floodplain valleys, and canyons through which highways or railways might connect the valleys but otherwise humankind remains a visitor. The Gunnison’s Black Canyon is one of the steepest, deepest and narrowest canyons in the world, through which no highways or railways pass, and only a handful of adventurers float and swim through just to prove they can.
But the terrain levels out a little in the 14 miles of the Gunnison Gorge, creating long stretches of relatively broad slow-flowing stream, interrupted by rapids where side streams plunge in or rock falls have happened, creating a haven for fish and a gold-medal mecca for fishermen. Much of the Gorge is as narrow as the upstream canyon; dark rock walls on both sides rise steeply several hundred feet through most of it, with sand bars here and there for overnight camps and lunch stops. And everywhere in and along the river there are random rocks, ranging in size from a medicine ball to a small house; looking up the walls, one sees that more are awaiting some signal nudge to break off and fall, making one wonder what kind of mini-tsunami effect would happen if a raft were going by when a big one fell….
This is all what we call beautiful (recording it on our phones), but there is something else in these Gunnison canyons that goes beyond the pastoral scenic. You can get some of it in Connie Rudd’s sunrise image of the Black Canyon above. (Connie Rudd was superintendent of the Black Canyon National Park for a number of years.) The rock in the Black Canyon is not really black, but much of it is shadowed most of the time – not black so much as noir. The image shows the feature known as ‘The Painted Wall,’ due to its multicolored nature, but none of that is painted on; the river has exposed a cross-section of metamorphic rock that has been roiled, rolled, twisted, tilted, split and overturned, always under great pressure from earth layered on above and great heat from earth’s core hell. Rock that has had a hard life, not a comforting thought looking up at the walls from river level.
How did such a canyon system come to be? Gunnison Country geologist Tom Prather suggested that the Gunnison River, snowmelt from the already old Southern Rockies, had set its course looking as water does for the easiest routes through several hundred feet of fused volcanic ash from San Juan volcanoes to the south – on top of fused volcanic mud from the West Elk volcano to the north. And with its course already set in that stone, the forming river encountered the southern edge of a big blorp of metamorphic rock that was – well, just there. So rather than continuing to develop the open wide-V valley that most rivers are known for, the Gunnison River was captured by the hard rock with nothing to do but to cut an ever-deeper canyon that stayed steep and narrow with great hardrock walls in the Gunnison River’s Black Canyon and Gorge.
I am personally fascinated, in Rudd’s image, by how it shows the relative thickness of life as a layer contrasted with the geological layers. Look at the scrubby pinion-juniper and oak on the top of the Painted Wall. To call that layer of life on that mass of rock ‘skin-deep’ is almost an exaggeration. Our fossil-fueled efforts have expanded the layer of life to the seven miles or so above earth’s surface where we regularly fly, and the mile or so beneath the surface where we go to mine things we think we need, with nothing but microbial/incipient life above or below that. So life on earth occupies a layer 1/1,000th the diameter of the planet. If we remove fossil energy from the equation, the layer of earth and atmosphere occupied by life is probably measurable in thousands of feet rather than miles, less in total than a rounding error in the scale of the planet.
We’ve all heard the saying, ‘beauty is only skin-deep.’ But life is only skin-deep on the planet – ‘beauty’ is a term that works well in evaluations within that thin skin (as Connie Rudd’s image of the Painted Wall at sunrise is beautiful in its execution). But to be down in it, floating past rocks the size of small autos that came off those walls towering above – what’s there is some unarticulated and dynamic mystery beyond beauty. Maybe ‘awesome’ worked descriptively before that became a standard response to questions like ‘want to go for a beer?’ Maybe ‘Magnificent.’ ‘Stupendous.’ Or maybe just ‘brutal,’ if you’re floating along beneath it all; we don’t really get into its mystery until we’ve put it in terms in which we can feel something of the pain or ecstacy of what’s happened there.
Down in places like the Gorge that are beyond mere beauty and other ‘surface’ evaluations, I find my mind being stretched to the elastic limit over a concept like ‘nature.’ Or ‘god.’ The majority of us seem to be beyond a thoroughly churched ‘god’ (or panel of gods) as the creative force in the planet and its layer of life, but many of us seem to have just transferred to ‘nature’ that belief in some creative/destructive force larger than ourselves.
But it is not possible – for me, at any rate – to look up at these crumbling walls of tortured rock, some with trees struggling to grow in cracks in the rock until the roots split off the rock and tree and rock go in the river below with a wave that would smash a passing raft and its vacartioning passengers against the far wall – I can’t look at all of this and think of a loving ‘mother nature,’ a wisdom font of the sort we seem to want ‘nature’ to be, ultimately in charge of everything – that’s as hard as it is/was to look at ‘creation’ and imagine a ‘father god.’
Can we have creation without a designated creator – ‘god(s)’ or ‘nature’? All the ‘natural’ evidence I see points that way. In nature, life just happens, unfolds, evolves as it will or can: things just keep happening in what we call ‘nature,’ and when something happens, everything it happens to responds in some way – engages with it, absorbs or incorporates it, attacks it, tries to ignore it, sometimes succumbs to it, sometimes evicts it, and the whole incredible mishmash of life changing to adapt to things happening goes on. Sometimes what happens is something not happening, like a winter’s worth of snow not arriving, but it’s the same process: everything that this happens to responds in some way (some by also not happening)…. Life happens, and the living respond, and what happened (or didn’t) becomes part of life, in which things keep happening, on and on….
And to the extent to which old things happen in new places, to new groupings of living things with new responses and new outcomes, the process is creative, creation – sometimes creative destruction, but creation is not judgmental; creation just happens – as any mendicant poet or painter knows, trying to ‘look strange-eyed at the mindless world’ for the ‘dry sticks to turn to gold’ (thank you, Grendel).
That seems like the ‘nature of nature’ to me, and the nature of creation – and it has nothing to do with some set way that things are supposed to be. There’s no Garden of Eden/prelapsarian wilderness which we have destroyed or been ejected from; we still have all the indifferent wildness we can handle with the undomesticated Trumps, corporations and other weeds that grow out of the cracks of civilization’s pavement. American predatory capitalism is happening to the whole planet now, and everything on the planet, including its enshrouding atmosphere, is beginning to respond to that, seldom with appreciation.
Or so it seemed anyway, floating down the Gorge, in a protected wilderness park with nothing much to do but go with the flow and think about the life happening around me. One thing a water nerd like myself would of course think about, in thinking about the life happening around us, was the flow of the river that floated our raft. I knew the river was flowing at 300-350 cubic feet per second (cfs) through the Black Canyon and the Gorge; that flow was decreed as a year-round water right back in 2009 with priority to 1933 – along with an annual ‘spring flood’ flow for a short period usually in May, the volume depending on the depth of the mountain snowpack. Despite wilderness status for the Gorge and the ’natural’ appearance of everything there, the quantity of water flowing through is tightly controlled via releases from three dams upstream.
Aspinall Unit dams
A week or two after our float, the Bureau of Reclamation began cutting the flow to 200 cfs in response to the ‘creative destruction’ of the winter of 2026 that was happening. This reduction is happening mostly to protect the viability of the reservoirs from whence the water issues, but the river’s response to it will be to make some of the rapids in the Gorge more interesting (less water, more rock), and it may shut down the fishing (and some of the fish) as the remaining water warms to the point of endangering aquatic life.
We do have to face the fact that many, maybe most of our vaunted achievements as a civilization have not made life in the long run – even the medium run – better for ourselves and a lot of the rest of the planet’s life in a very basic way. And it seems to me we would probably do better at it if we could get away from the idea that some ‘god as a parent’ or ‘mother nature’ is going to show us The Way. The Way is still evolving, happening day by day, happening by happening. It’s truly dieu et la nature parmi nous, ‘god and nature among us’; someday maybe we’ll evolve enough to see that realizing either god or nature (making them real) is up to us, if we can come to collaborative execution as effective as our imagination. And we may do better there if we stopped looking and listening for god or nature as an already written book, and did more stopping, looking and listening for our own likely impacts before bulling ahead the way we usually do in the name of god or nature. Like it or not, we are probably writing the book, with a lot of the Old Testament chaos of false starts and backslides.
A line from a movie whose name I’ve forgotten came to my mind down in the Gunnison Gorge, a movie that ends (as I recall) in a lifeboat with the boat captain encouraging his rowers, ‘Pull for the horizon, boys; it’s better than nothing.’ A message of hope, as I remember, which should never be confused with optimism.
Okay – next post I’ll get back to the larger river and its challenges. Meanwhile, I hope all of you get some time to just irresponsibly drift this summer, like me in the Gunnison Gorge, and think about how life happens, and maybe some better responses we might all try to learn, better together.
ANOTHER SHAMELESS ADVERTISEMENT FOR MY POETRY BOOK
I am not optimistic
that things will get better
but still I hope
they will
hope
damned hope
hope damned
hope
the daisy game
is my game
petals to
the mettle
I can’t
not hope
An address by email to george@gard-sibley.org will get payment information and a book winging – okay, plodding its way to you.
Valley cities have spent years preparing for Colorado River shortages and say they are prepared to keep water flowing even under major federal cutbacks. Photo credit: Ted Wood/The Water Desk
Click the link to read the article on the KJZZ website (Alex Hager):
August 4, 2026
Colorado River shortages are no surprise. Climate change and drought have been steadily cutting into water supplies for about 26 years. Various plans to rein in demand have emerged throughout that time, and new cutbacks have been in the works for more than a year. The amount of water that each Valley city gets from the Colorado River varies significantly from city to city, but the majority receive at least some. Some cities are more prepared than others to weather today’s drier conditions, but most have at least some plan to deal with new Colorado River reductions. The Interior Department set the table for new cuts on Friday [July 31, 2026], laying out the framework of a plan that would allow the federal government to cut the Colorado River supply for Arizona, California and Nevada by up to 40%…A second announcement, which may come in the next few days, will deliver specifics about the size of cuts to the Phoenix area in 2027 and 2028.
Regardless of their scale, city leaders say they will be able to keep taps running.Like any good investor, most utility managers have focused on diversifying their portfolios. Essentially, the more different sources of water that flow to a city, the more it can tolerate cuts to one of those sources. In the Valley, that primarily means getting water from underground aquifers and the Salt River. Underground stores of water, pulled up by a system of wells, are carefully managed under state law and can give cities a backup in times of shortage on the surface. In some cases, water agencies have been taking excess water from the Colorado River for years and adding it to the underground stash, with the idea that it could be retrieved in times like these…In July, the Arizona Water Banking Authority announced that it will use its stored waterto make utilities whole in the event of cutbacks to their supplies from the Colorado River…Older, larger cities also tend to have more money for the kind of expensive engineering that can help diversify a water portfolio. For example, Phoenix is building a massive, high-tech water treatment plant that can safely recycle sewage back into purified drinking water. Major cities around the West are betting big on the technology to help withstand drought and climate change in the long term. Phoenix aims to send water from the $350 million facility into city pipes in early 2029. Cities that use water from the Salt River system are contributing to a multibillion-dollar expansion of Bartlett Dam, which holds back Bartlett Lake. In recent years, after particularly snowy winters, the river has provided more water than the reservoir can hold. A larger dam, cities say, would help them capture, store and use more water from the Salt River system in the future. For cities that lack diverse water portfolios and the kind of money needed for massive engineering projects, there’s a way for them to benefit from the cities that do. In April, as Colorado River cuts were becoming imminent, the city of Phoenix announced a new water transfer program called the “Secure Water Arizona Program”, or SWAP. Details are still emerging about how it would work, but it promises to connect cities that have water to cities that need water…Other water transfers, both in Arizona and across state lines, may be a big part of the long-term plan for cities and towns in the Valley. For example, farms may find it lucrative to sell some of their supplies to fast-growing cities in the metro that are willing to pay top dollar. Native American tribes, which often hold large, powerful legal rights to access the Colorado River, may also be willing to sell. A $5 billion settlement deal is currently in the works to give three Arizona tribes more access to their Colorado River water. If it passes, they could also gain the ability to lease their water to cities far from their reservations. Desalination, a high-tech process that can turn salty ocean water into pure, drinkable fresh water, has long been a tempting proposition for water-short cities. High costs and major logistical challenges mean that Arizona is unlikely to build its own desalination plant anytime soon, but a transfer program could allow it to benefit from an already-operational desalination facility. The Central Arizona Project and a handful of other water agencies around the region are exploring a deal to exchange water rights with a desalination facility in Carlsbad, California.
Lake Powell and Glen Canyon Dam. Photo credit: Western Resource Advocates
Click the link to read the article on the Colorado Politics website (Marianne Goodland). Here’s an excerpt:
July 31, 2026
Calling it a balanced approach that offers flexibility and predictability, the plan released by the U.S. Department of the Interior cuts the allocation of Arizona, California and Nevada, while sparing Colorado, Utah, New Mexico and Wyoming for now…Under the plan, the Lower Basin states could face collective cuts up to 3 million acre-feet through 2036, “subject to hydrology,” according to a news release by the Department of the Interior. That’s enough water to serve more than 25 million people a year. The plan would also allow annual releases between 5 and 12 million acre-feet from Lake Powell, the basin’s second-largest reservoir. Under the 10-year federal framework, water management decisions will be made every two years…
Assistant Secretary for Water and Science Andrea Travnicek said in a statement Friday that the plan, known as a final environmental impact statement, “strikes a balance between flexibility and predictability for the Colorado River system that is vital to the 40 million people who rely on it, given unprecedented hydrologic conditions and the potential for considerable impacts on water users.”
Between 2020 and 2024, the average consumptive use in the Colorado River Basin was 13.1 million acre-feet. That is broken down by:
Upper Basin: 3.8 million acre-feet (29%)
Lower Basin: 6.5 million acre-feet (49%)
Mexico use: 1.4 million acre-feet (11%)
Evaporation: 1.4 million acre-feet (11%)
At the time the 1922 compact was signed, the seven states had a combined population of about six million — roughly the size of Colorado’s population today…
She said last month that she “has no idea what that process would look like, constantly negotiating every two years.”
“The basin is experiencing increased aridity due to climate variability, and long-term drought and low-runoff conditions are expected in the future,” wrote the Bureau of Reclamation in the summary. “These conditions will exacerbate the now widely recognized imbalance between water supply and demand in the basin. Robust and flexible guidelines are needed to manage the Colorado River system and its resources under a broad range of potential future hydrologic conditions.”
[…]
The two reservoirs are currently governed by guidelines established in 2007 that are set to expire this year, and many agree the plan has failed to protect the Colorado River system…The final proposal does not provide specifics for how water will be distributed across the basin, with the Bureau of Reclamation describing it as a “framework” that identifies key triggers and ranges for developing future operating guidelines at Lake Powell and Lake Mead. It sets up a plan to negotiate 2-year operating plans for the reservoirs through 2036…The final statement provides a range of alternatives, including the Bureau of Reclamation’s “preferred” option. Each alternative sets guidelines for how it will reduce or increase annual consumptive water use allocations from Lake Mead to the Lower Basin states; store and deliver water saved through conservation efforts; manage and deliver surplus water; manage activities and make cuts above Lake Powell; and more.
Map of the Colorado River drainage basin, created using USGS data. By Shannon1 Creative Commons Attribution-Share Alike 4.0
Click the link to read the article on the Pagosa Springs Sun website (Josh Pike and Randi Pierce). Here’s an excerpt:
July 29, 2026
Beginning July 22, area jurisdictions began rescinding Stage 2 fire restrictions, with Stage 1 restrictions remaining in effect in much of the area…On July 22, it was announced that improved fire weather conditions and near containment on the Ferris Fire had prompted Bureau of Land Management (BLM) officials to ease fire restrictions and reopen public lands within the Tres Rios Field Office. Effective July 22, Stage 2 fire restrictions were lifted on BLM-administered public lands managed by the Tres Rios Field Office, including Canyons of the Ancients National Monument…On Thursday, July 23, the Archuleta County Sheriff’s Office (ACSO) announced it had, in collaboration with the Pagosa Fire Protection District, rescinded Stage 2 fire restrictions effective immediately…The following day, Friday, July 24, the Town of Pagosa Springs announced it had rescinded Stage 2 fire restrictions effective that day…On Wednesday, July 29, the San Juan National Forest announced it would be rescinding Stage 2 fire restrictions effective 12:01 a.m. Thursday, July 30, on all National Forest System lands…
Colorado Drought Monitor map July 28, 2026.
According to the Community Collaborative Rain, Hail and Snow Network (CoCoRaHS), areas in Archuleta County received from .91 inches to 3.15 inches of rain between July 15 and July 29. Despite the recent rains, the Pagosa Area Water and Sanitation District (PAWSD) remains in stage two drought restrictions, and the area remains in severe drought. According to the U.S. Drought Monitor, 100 percent of Archuleta County remained in severe drought as of July 21, with 1.90 percent of the county — the northeast corner — falling under extreme drought. The week prior, 36.15 percent of the county fell under extreme drought…
According to the U.S. Geological Survey water monitoring gauge at the San Juan River in Pagosa Springs and the Colorado Basin River Forecast Center, although the San Juan has remained at a very low but generally steady level, it did appear to hit record low levels several times over the last week. According to the River Forecast Center, on July 24, the river hit about 19 cubic feet per second (cfs), below the 2002 low of 21. The following day, it hit about 17 cfs, below the 2002 low of 19 cfs. On July 28 at 11:15 a.m., the river was recorded running at 15 cubic feet per second (cfs), 0.5 cfs above the previous record low set in 2002.
Map of the San Juan River, a tributary of the Colorado River, in Arizona, Colorado, New Mexico and Utah, USA. Made using USGS National Map data. By Shannon1 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=47456307
After Utah and six other states along the Colorado River failed to reach a deal on how to share its dwindling water supply, the federal government on Friday released its own 10-year outline.
Colorado River Collaborative
This article is published through the Colorado River Collaborative, a solutions journalism initiative supported by the Janet Quinney Lawson Institute for Land, Water, and Air at Utah State University. See all of our stories about how Utahns are impacted by the Colorado River atgreatsaltlakenews.org/coloradoriver
Under the proposal from the U.S. Bureau of Reclamation, the Lower Basin states of Arizona, California and Nevada would share in cuts of up to 3 million acre-feet per year. The framework doesn’t mandate cuts for Colorado, New Mexico, Utah and Wyoming.
Instead, it identifies a conservation goal for the Upper Basin — 200,000 acre-feet per year — about as much as Utah’s Deer Creek and East Canyon reservoirs together can hold. The plan would also allow for smaller annual releases from Lake Powell of down to 5 million acre-feet, compared to the current 6 million acre-feet, with new operating guidelines every two years.
Utah’s chief Colorado River negotiator, Gene Shawcroft, praised the proposal on Friday, telling reporters it recognizes the reality of the water available, not just the demand. But he emphasized it provides a broad framework, with the details to follow in coming days.
“I would just simply say, this is a bridge, not a destination,” Shawcroft said in a virtual news conference. “It certainly could be a bridge over troubled waters, but perhaps a bridge over no waters. We just aren’t quite sure.”
He and Amy Haas, executive director of the Colorado River Authority of Utah, were still reading through the 2,600 pages contained in the bureau’s environmental impact statement released Friday.
Haas said the state will know more about what it’s contending with when it gets a copy of a two-year operations plan for 2027 and 2028 in coming days, though the exact timeline wasn’t clear.
The Colorado River is pictured where if flows near Hite, just beyond the upper reaches of Lake Powell, on Friday, Sept. 19, 2025. (Photo by Spenser Heaps for Utah News Dispatch)
The Colorado River provides water to 40 million people across the U.S. and Mexico, contributing 27% of Utah’s water supply. It’s shrinking because of drought, overuse and hotter temperatures linked to climate change.
This year’s record-high temperatures and lowest snowpack on record aren’t helping. Normally, Colorado River runoff is about 13 million acre-feet, Shawcroft said. Now it’s 3.5 million acre-feet.
He told reporters: “We’re in a dire situation.”
On Friday, Arizona’s Department of Water Resources called the proposal’s cuts for the Lower Basin “unacceptable,” saying such reductions would devastate Arizona’s water users and its economy.”
The agency described negotiations over many months as “an exercise in lowering expectations, particularly for a long-term, seven-state agreement on operating this vital river system.”
The disagreement could find its way into a courtroom soon. Arizona and Utah have both taken steps this year to build up litigation funds.
“For Utah, litigation is never our plan A,” Haas told reporters Friday. “Whether it’s a plan B, depending on the context of this document, that remains to be seen. But litigation is not going to get us anywhere on this river. It’s not going to get us more water.”
At issue in the negotiations is who absorbs necessary cuts. Upper Basin states argue they use less water than Lower Basin states, don’t have huge reservoirs to store water in dry years, and lack legal authority to place significant restrictions on water users.
Lake Powell and the Wahweap Marina are pictured near Page, Arizona on Sunday, Feb. 2, 2025. (Photo by Spenser Heaps for Utah News Dispatch)
The proposal out Friday is adaptable and allows the states to keep negotiating, said Secretary of the Interior Doug Burgum.
“This framework provides the flexibility to respond to changing hydrologic conditions while preserving the opportunity for the Basin States to continue working toward durable, consensus-based solutions,” Burgum said in a statement.
Utah Gov. Spencer Cox, in a joint statement with his counterparts in the other upstream states, said they’re encouraged that incoming operating guidelines “will better reflect existing water supply, which must underpin any practicable plan going forward.”
They went on to say that both the upper and lower divisions of the basin “are feeling the pain of severe drought. This is a reality that all states, and the federal government, will need to address practically, which is why a seven-state agreement will provide the best outcome for all water users in the Colorado River Basin.”
Water use is outpacing the river’s flows, and that overconsumption adds up. The combined amount of water in Lake Powell and Lake Mead is at its lowest point since before Glen Canyon Dam began to fill up in 1963, the bureau said in its Friday news release.
If water levels dip to critical lows, as forecasts suggest they could by late this year, the nation’s two largest reservoirs could fail to produce power. If their depths continue to slide, they’ll fail to send water downstream.
Conservation and recreation groups have called for an end to the gridlock, saying it’s dragging on in the background while hotter and drier conditions are driving up wildfire risks, air quality concerns and restrictions on the water supply.
Utah News Dispatch is part of States Newsroom, a nonprofit news network supported by grants and a coalition of donors as a 501c(3) public charity. Utah News Dispatch maintains editorial independence. Contact Editor McKenzie Romero for questions: info@utahnewsdispatch.com.
The Colorado River Basin spans seven U.S. states and part of Mexico. Lake Powell, upstream from the Grand Canyon, and Lake Mead, near Las Vegas, are the two principal reservoirs in the Colorado River water-supply system. (Bureau of Reclamation)
The federal government on Friday formalized a set of guidelines for managing water use in the Colorado River Basin over the next decade, if Colorado and six other Western states can’t come to an agreement on how to deal with declining flows caused in large part by climate change.
“The Department has a responsibility to ensure the Colorado River system remains reliable and resilient for the millions of Americans, communities and industries that depend on it,” Interior Secretary Doug Burgum said in a press release. “This framework provides the flexibility to respond to changing hydrologic conditions while preserving the opportunity for the Basin States to continue working toward durable, consensus-based solutions.”
Under the U.S. Bureau of Reclamation’s “preferred alternative” for the management of the river’s reservoir system, outlined in a extensive environmental impact statement, the burden of the most severe cuts would continue to fall on the Lower Basin states of Arizona, California and Nevada, which could face mandatory cuts of up to 3 million acre-feet of water. The Upper Basin states of Colorado, New Mexico, Utah and Wyoming would face only voluntary conservation targets totaling 200,000 acre-feet.
All seven states were parties to the Colorado River Compact, a 1922 agreement governing the use of water from the vital Western watershed. Today, the Colorado River provides water to an area inhabited by 40 million people across the Southwest, though agricultural uses account for the vast majority of consumption.
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
Since 2000, a megadrought caused largely by global warming — the region’s worst dry spell in at least 1,200 years — has stressed water supplies across the basin and pushed the Colorado River Compact to a breaking point. The last set of federal guidelines to address shortages, issued nearly 20 years ago, will expire Jan. 1, and the seven Colorado River Compact states failed to reach a new agreement before a federally imposed deadline in February.
The combined amount of water stored in Lake Powell and Lake Mead, the Colorado River system’s two key reservoirs, fell this month to its lowest level since May 1957 — before Lake Powell, created by the Glen Canyon Dam, had even begun to fill.
Without a major turnaround in hydrologic conditions in the near future, water levels in Lake Powell are expected to fall by next spring to below “minimum power pool,” at which point the Glen Canyon Dam’s hydroelectric turbines would be unable to operate.
Negotiations over a comprehensive new agreement have led to an increasingly bitter dispute between the Upper Basin states — led by Colorado, the river’s headwaters state and by far the Upper Basin’s largest water user — and the Lower Basin states, especially Arizona, which has borne the brunt of the cuts imposed in recent years. Arizona is widely expected to launch a high-stakes legal challenge as soon as this summer, alleging Colorado and other Upper Basin states are failing to meet an obligation under the original Colorado River Compact to allow enough water to flow downstream.
Colorado Gov. Jared Polis issued a joint statement Friday with the governors of the other three Upper Basin states, saying that “both the Upper and Lower divisions of the basin are feeling the pain of severe drought,” and that they were “committed to continued good-faith discussions with our counterparts.”
“Many hours of meetings and negotiations took place between the Colorado River Basin states and these discussions will continue,” the statement said. “Today’s framework does not represent a final solution, but enables the River to be managed in the short-term while the seven states and (the Interior Department) continue to negotiate a consensus solution.”
In the absence of a new agreement among the states, the Bureau of Reclamation says it will continue to update its new guidelines every two years until 2036.
Andrea Travnicek, the Interior Department’s assistant secretary for water and science, said the plan “strikes a balance between flexibility and predictability … given unprecedented hydrologic conditions and the potential for considerable impacts on water users.”
In a statement, Democratic U.S. Sen. Michael Bennet of Colorado said he was “disappointed” by the failure to reach a new long-term agreement among the seven Colorado River Compact states.
“While a two-year operating plan is the bare minimum needed to operate the river, a long-term, consensus agreement that recognizes real hydrologic conditions is the only durable solution to bring certainty to the Colorado River,” Bennet said.
Colorado Newsline is part of States Newsroom, a nonprofit news network supported by grants and a coalition of donors as a 501c(3) public charity. Colorado Newsline maintains editorial independence. Contact Editor Quentin Young for questions: info@coloradonewsline.com.
Map of the Colorado River drainage basin, created using USGS data. By Shannon1 Creative Commons Attribution-Share Alike 4.0
Map of the Upper Colorado River Basin showing project reservoirs where new monitoring equipment is deployed. Note: Reservoir extents have been exaggerated for visualization. Credit: The Desert Research Institute
DRI and OpenET are partnering with the Upper Colorado River Commission and the Bureau of Reclamation to expand evaporation monitoring on the Upper Colorado River Basin’s largest reservoirs. This summer, new monitoring stations are being established on Flaming Gorge, Blue Mesa, and Navajo Reservoirs. The initiative follows the success of the Lake Powell evaporation monitoring project – one of the longest-running reservoir evaporation monitoring efforts in the Western U.S., which has provided data since 2019. Establishing state of the art weather and evaporation monitoring stations at these reservoirs will directly inform improvements for evaporation models and our understanding of water availability in the Colorado River.
DRI’s evaporation monitoring uses advanced micrometeorological stations that collect continuous observations of weather, water temperature, and calculated evaporation rates. The Reservoir Evaporation Research Team, led by DRI’s Justin Huntington and Chris Pearson, has led numerous open water evaporation data collection and modeling efforts in the Western U.S., including the Bureau of Reclamation’s Open Water Evaporation Network Initiative and a statewide effort to track daily reservoir evaporation rates throughout Texas.
“High-quality, over-water data provide critical benchmarks for validating and refining both satellite-based and gridded weather models, supporting more reliable large-scale evaporation estimates.”
By installing the weather stations on floating platforms directly on the water, DRI’s instrumentation obtains more accurate data than traditional methods that occur on land adjacent to reservoirs. The weather stations transmit measurements in near real-time to DRI portals that allow for the data to be visualized and monitored by researchers and water managers. Specialized equipment known as an eddy covariance station is used to calculate evaporation using high-frequency measurements of water vapor, wind speed and direction in all three spatial dimensions.
A satellite image of the Phoenix metro area with the moisture index layer turned on (blue = more moisture; red = drier). Scroll down to see more images and explanations. Source: Copernicus Browser.
Click the link to read the article on The Land Desk website (Jonathan P. Thompson):
July 31, 2026
The Land Desk is evolving! During the five and a half years that I’ve been doing this, several readers and would-be-donors have urged me to make this little enterprise a non-profit. I often would respond with something like, Yeah, I’m already there. To which they’d say: No, become a 501(c)3 so that our donations can be tax deductible, dummy!
And so, finally, my wife Wendy and I bit the bullet, hired an accountant, and went through the red tape to get it done. And so, the IRS made it official earlier this month: The Land Desk Media is officially a 501(c)3. Don’t worry, we’re not going to be begging you for money every few months, or holding fund-drives, or whatever. The model will stay pretty much the same; this simply allows folks who have been so generously supporting the Land Desk as Founding/Sustaining Members, Buy Me Coffee donors, or tip Jar tippers to write off those donations.
We’ll still have free subscriptions and paid subscriptions, with the same benefits for both (the $60/year and $6/month subscription fees do not count as tax deductible donations, but if you sign up as a Sustaining Member for $200/year, for example, $140 of it would be deductible). We may occasionally look to raise money for specific initiatives: to hire a freelancer, to offset travel costs for a reporting trip, to buy a new camera lens or whatnot, to expand the scope of the Land Desk’s coverage, or to publish a book or two under our imprint, Lost Souls Press.
We’re still lining up our ducks with some of the details, but if you’d like to donate, you can do it here: Make a tax deductible donation
The Land Desk News Feed
As long as we’re talking shop, the Land Desk is about to go through a different sort of evolution, this time by adding an appendage, if you will: a human-curated rundown of the week’s biggest news from the Land Desk realm, which would include public lands, energy development, wildlife, economics, water, climate, water, and more. It would be a list of a dozen or so summaries of the news items, along with a link to the original story or stories.
This will be a once-a-week dispatch (in addition to the two each week that I send out now). The idea is to allow readers to stay in the loop without some big commitment to read a bunch of context, and for me to update folks on developments in ongoing stories in a concise way while also amplifying other voices and journalism from around the region.
I do this sort of thing three times a week for Canary Media in which I gather and summarize Western energy stories. Here’s an outtake from a recent edition:
But the Canary gig is coming to an end, which is giving me the push I needed to implement this sort of thing (although with a much broader subject range) here at the Land Desk.
I think a lot of readers will value this service, but at the same time, I don’t want to overwhelm your email boxes with too many dispatches every week. So I’m hoping y’all can let me know whether I should add this as a third weekly email for all paid and free subscribers? Or should I make it a separate newsletter altogether that would require signing up separately? (Click through to the article to participate in Jonathan’s poll.)
⛈️ Wacky Weather Watch⚡️
When I was a kid, my family occasionally took trips to Phoenix, usually to visit my grandparents who wintered in a single-wide in Apache Junction due to my grandfather’s emphysema. I loved everything about these journeys: peering out the car window as we floated through the Navajo Nation, dropping from one season into another as we descended the Mogollan Rim, competing with my brother to spot the first saguaro, and ending up in a place where palm trees lined streets and citrus orchards surrounded the city.
In my teens and twenties my fondness for the Sonoran Desert migrated southward to Tucson. I was drawn by the vibrance of both the city and surrounding desert, as well as the climate; in the springtime I could begin a hike up Mt. Wrightson in t-shirt and shorts, strolling below the lush canopy amid birdsong, and end up huddling under a rock in a blizzard at the top. Then I could reward myself with some killer tacos in South Tucson on the way back. I always figured I’d live down there someday.
I’m still fond of Tucson and, yes, even Phoenix. But the idea of living in the place, especially the latter, gets less and less palatable with every passing year as temperatures rise. Check out this weekend’s forecast, which, believe it or not, is actually milder than the high temps from last weekend:
The 115° F daytime high is brutal — especially for those with homes that don’t have AC or decent insulation or who don’t have houses, at all. That’s the kind of heat that kills, as the statistics make all too clear. But it’s the 93° F nighttime low that really frightens me: The city is still an oven during the coolest, darkest hours of pre-dawn. Even if you do have a climate-controlled home and good AC in your car, you’re virtually trapped inside. A 5 a.m. run in those temperatures would be unhealthy, maybe even deadly.
But don’t think you can escape by heading to Colorado or Utah. Grand Junction and Hotchkiss are sweltering through triple digit highs as well; Moab’s mercury may hit 110° F this weekend, with 112° F forecasted for St. George. The timing’s especially bad for farmers in the North Fork Valley, where one of the major irrigation canals is shutting down today (July 31) due to lack of water in the reservoir (at least one of the other big ditches in the area shut down on July 20).
The current heatwave comes on the heels of an extreme heat spell that shattered all-time maximum heat records at 88 weather stations across the West, e.g.: 114° F in Brandenberg, Mont.; 104° F in Swan Valley, Idaho; 104° F at Pineview Dam, Utah; 109° F in Thermopolis, Wyo.; and 113° F in Burlington, Colo.
Those extraordinarily warm temperatures joined up with lightning to spark fires across the region, especially in the Northwest, which continues to burn. Oregon’s Lowe Creek Complex has ballooned to 300,000+ acres, and several other fires in the region exceed 50,000 acres in size. The smoke is traveling across the country and is even dimming air quality on the East Coast. More fire weather (dry, hot, windy) is forecasted for this weekend.
And if the heat doesn’t get you, the flash floods could. The intense yet isolated thunderstorms continue to wreak mayhem. Two massive debris flows hit Hwy 550 between Ouray and Silverton on Wednesday, trapping motorists and shutting down the artery — it remained closed Thursday night. Flooding also occurred on the Gold Mountain Fire scar north of Ouray. On Wednesday, the normally tame Cutler Creek became a raging, chocolate-colored, fire-debris-filled torrent that escaped its banks and blasted into homes, causing one family to fear for their lives.
In the winter, Colorado staffs mountain highways with avalanche forecasters to monitor conditions and recommend shutting down the roads during high danger. With all of the landslide/debris flow action affecting highways and backroads, perhaps it’s time to make the program year round?
Thankfully, the rains have helped stifle the erratic behavior of the big blazes in Colorado and Utah, though a new fire, the Rio Blanco blaze, is burning south of Pagosa Springs, and had reached 730 acres as of Thursday night.
🗺️ Messing with Maps 🧭 🥵 Aridification Watch 🐫
The satellite images below, using the Moisture Index layer on the Copernicus Browser, contrasts dry areas (yellow, orange, and red) with more moist areas (green, blue, and dark blue). Each of the maps accentuates the importance of irrigation to the West’s agriculture and, really, to its communities, by showing a stark line between irrigated areas and non-irrigated ones.
Comparing the maps to one another shows how much drier the region is this year than it was three years ago, following one of the wetter winters of recent history. It also provides a visual illustration of the way the prior appropriation doctrine — which rules Western water law — plays out on the ground during dry years between the haves (those with senior water rights) and the have nots (those with junior water rights).
In this case it also shows how unjust and unfair the doctrine can be. The Ute Mountain Ute Tribe has 1868 rights to water from the Dolores River, making them the most senior rights holders of all (as one would expect). However, their water is delivered to them via the Dolores Project, whose water rights are tied to the date of congressional approval, or 1968.
Southwestern Colorado, with Ute Mountain in the center, on July 28, 2023. That was a relatively good water year, when McPhee Reservoir filled up in the spring, allowing full allocations to water rights holders. Ute Mountain Ute Farm & Ranch Enterprises was able to irrigate most of its fields (the lines of center-pivot sprinkler circles in the lower left corner). McElmo and Yellowjacket Canyons also had enough irrigation runoff to yield a fairly high moisture index (blue).
The same view on July 29, 2026. The Ute Mountain Utes received a fraction of their normal water allotment from McPhee Reservoir, forcing them to fallow most of their farm fields. But the Montezuma Valley irrigators — who hold senior rights due to the weirdness of Western water law — mostly have been able to continue irrigating their farms. As a result, there has been adequate runoff to keep McElmo Canyon relatively green (or, in the case of this map, blue).
This shows the Great Sage Plain of western Colorado on July 28, 2023, with Dove Creek just left of center near the top, and the Dolores River Canyon (the dark blue, squiggly line) just right of center. The Dove Creek area was mostly dryland farming until McPhee Reservoir and its associated canals came online beginning in 1983. During wet years, such as 2023, there’s enough water for a handful of farmers to irrigate their fields as can be seen by the dark blue squares and circles near Cahone, Pleasant View, and Dove Creek. That year there was even enough water to release some into the Lower Dolores River, which is why the blue line there is so pronounced.
Here’s the same place showing the vastly different and drier conditions from three years later, on July 29, 2026. Only a few fields are receiving irrigation water in the area, while others sit fallow and dry. The Ferris Fire burn scar shows up as a blood-red swath to the right of Dove Creek and Cahone. The Dolores River through there no longer shows up.
You know the Colorado River crisis is serious when the Trump administration is willing to use hundreds of millions of dollars from President Biden’s climate law to help to solve it.
As of Wednesday night, federal officials had yet to release their plan for mandatory water cutbacks along the Colorado — a crucial water source for tens of millions of people and millions of acres of farmland across the American West. But with a plan expected later this week, details were starting to trickle out.
The L.A. Times’ Ian James reported that Trump’s Interior Department would accept a proposal submitted by California, Arizona and Nevada — the Lower Basin states — to slash their water use by 12%, 31% and 28%, respectively, through 2028. They’ll receive $350 million from Biden’s Inflation Reduction Act to support water conservation.
The Upper Basin states — Colorado, Utah, New Mexico and Wyoming — will get $100 million in conservation funding. But unlike their downstream neighbors, they won’t face mandatory water cuts. However much water they end up saving, that will be good enough.
It’s always possible the plan will change. I’m eager to see the final details.
While we wait, let’s hear from one of the West’s most thoughtful and well-informed Colorado River chroniclers.
That would be Zak Podmore, author of “Life After Dead Pool: Lake Powell’s Last Days and the Rebirth of the Colorado River.” Earlier this week, he and I talked for an hour and took audience questions on Zoom; it was a great time. Thank you to everyone who joined us. Paid subscribers to Climate-Colored Goggles can scroll up to watch the full video.
Here are five lessons that stood out to me from our conversation — all of which are relevant to the high-stakes conflict playing out among the states.
1. We’re not doomed. Earth is resilient
My favorite thing about “Life After Dead Pool” is its hopeful message.
Most headlines about the Colorado River these days are gloomy. For instance, the last time Lake Mead and Lake Powell held as little water as they do right now was 1956 — before Lake Powell existed, meaning all the water was in Mead. Powell is currently 23% full; Mead is 27% full. These are the largest reservoirs in the United States.
A river returns. Almost 50 miles of the San Juan, once inundated by Powell Reservoir, are flowing free. Photo credit: Morgan Sjogren
But Podmore’s book flips the script, offering a firsthand look the amazing ecological recovery taking place as Lake Powell shrinks.
In and around the reservoir, which was flooded by Glen Canyon Dam more than 60 years ago, native vegetation is returning much faster than scientists thought possible — especially in narrow side canyons inundated by Powell. Exploring these remote, newly accessible places inspired Podmore to write his book.
“Instead of hearing the story that I grew up hearing — which was that Glen Canyon Dam had all these negative environmental consequences, it drowned this beautiful place — I was hearing these conversations from these researchers who were talking about the landscape that was coming back, and how excited they were about the way the ecology was recovering, and the way the endangered fish were expanding their habitat,” Podmore said.
“Instead of a story about being too late, it was a story about realizing that I was right on time, as we all are, to see the rebirth of Glen Canyon,” he added.
The Colorado River flows through Glen Canyon in 1958, before the dam was built. (Photo via Wikimedia Commons)
2. Those who don’t learn from history…
Podmore starts the book by imagining what Indigenous life might have been like in and around Glen Canyon nearly 1,000 years ago — when the region had a far larger population than it does today.
He wanted to show that the Colorado River Basin’s human history began long before white settlement — and that even environmentalists have often ignored the watershed’s Indigenous past.
“I was definitely indoctrinated into the mainstream environmental school of thought as I was growing up,” he said. “I had a copy of the really famous book about Glen Canyon called, ‘The Place No One Knew,’ which was published by the Sierra Club in the ’60s and talked about how nobody cared enough about Glen Canyon to protect it. And then I realized later on that [the] title was very offensive, and [in fact] there were people who knew Glen Canyon very well and lived there for thousands of years, and who were displaced as the waters of Lake Powell started to fill, in the case of many Navajo families.”
Podmore’s opening scene describes a 10,000-gallon stone water tank built by Ancestral Pueblo farmers, the ruins of which were eventually buried by Lake Powell. The tank’s key feature: a drain at the bottom, so that irrigation could continue no matter how low water levels got.
Diagram showing critical reservoir levels at Glen Canyon Dam and Lake Powell. Land Desk diagram with data from the Bureau of Reclamation.
Lake Powell doesn’t have a drain at the bottom. It could certainly use one.
3. The Upper Basin states aren’t doing enough
If Powell’s water levels sink much lower, water won’t be able to pass through the dam’s hydropower turbines, which generate cheap electricity for communities across the West. That wouldn’t be a “dead pool” situation; water could still flow downstream to the Grand Canyon and Lake Mead through bypass tubes lower in the dam. But the bypass tubes are surprisingly frail and could break with sustained use.
Translation: We are frighteningly close to “de facto dead pool.” That’s why the Trump administration is ordering everyone to use less water.
Well, not everyone. California, Arizona and Nevada are willing to cut back dramatically, and federal officials seem happy to make them do it. The Upper Basin states — the ones upstream of Lake Powell — say they shouldn’t have to commit to mandatory reductions, in part because they already consume a lot less.
[ed. It is not possible to measure or marshall water to Lake Powell (lack of infrastructure, gaining and losing reaches, priority, no way to color water in the river). Inflows are calculated values, or the height of the column at the dam. The Upper Basin consumes a lot less than their allocation under the compact, so yes, much less than the Lower Basin. Here’s an AI recap of inflows to Lake Powell.]
In a New York Times opinion piece earlier this year, I argued that the Upper Basin states need to do more. Podmore agreed.
“It’s a tricky situation, because the Lower Basin has always used more water, and that’s a convenient argument for the Upper Basin,” he said. “But also, there’s more people in the Lower Basin. And the most productive agricultural land that’s irrigated with Colorado River water is located in the Lower Basin.”
“Even with the cuts that the Lower Basin has offered, we still have a long way to go to balance the water budget,” he added. “Everyone needs to pitch in.”
Farmland in California’s Imperial Valley, irrigated with Colorado River water. (Photo by Sammy Roth)
4. Alfalfa isn’t (always) the enemy
Farmers are often vilified for sucking up copious amounts of water — and with good reason. Irrigated agriculture consumes more than half the water in the Colorado River Basin, with alfalfa and other cattle feed accounting for a stunning 32% of overall water use. (This is one of several good reasons to eat fewer hamburgers.)
The Colorado River’s largest water user, by far, is California’s Imperial Valley, where farmers grow vegetables, alfalfa and other crops. There’s no sustainable future for the American West that doesn’t involve Imperial using less water.
But easy as it is to hate on Imperial, Podmore pointed out that when the Lower Basin uses water, that water stays in the river for a long time, supporting healthy ecosystems along the way. And because Imperial is very far downstream, water flowing to alfalfa farmers there carries huge environmental benefits.
“The way that water gets from the Rocky Mountains to the Imperial Valley — or to Los Angeles or Las Vegas or Phoenix — is through the Grand Canyon. It’s through Glen Canyon. It’s through Canyonlands National Park,” Podmore said. “It’s through all these important and beautiful places.”
“If the Lower Basin agrees to a bunch of cuts — if L.A. builds tons of desalination plants — that would in theory be good, because you have to divert less water from the river,” he added. But at the same time, “that means less water in the river.”
Colorado River “Beginnings”. Photo: Brent Gardner-Smith/Aspen Journalism
The Bureau of Reclamation has released the Final Environmental Impact Statement, which designates a preferred course of action for future management of Lake Powell and Lake Mead. The preferred alternative establishes an adaptive decision framework to be used to develop operating guidelines designed to ensure reliable operations in the Colorado River Basin while maintaining the flexibility to respond to changing conditions over a 10-year period through 2036. The framework also preserves the opportunity for the Basin to continue working towards consensus agreements, and if successful, be incorporated into future operations.
The framework will be used to develop operating guidelines for operations at Lake Powell and Lake Mead that can be adjusted for shorter and longer term periods.
“The Department has a responsibility to ensure the Colorado River system remains reliable and resilient for the millions of Americans, communities and industries that depend on it,” saidSecretary of the Interior Doug Burgum. “This framework provides the flexibility to respond to changing hydrologic conditions while preserving the opportunity for the Basin States to continue working toward durable, consensus-based solutions.”
The framework establishes the operational principles, sideboards—key thresholds and ranges for operational elements—and a process that will govern development and issuance of operating guidelines through 2036. Operational sideboards were chosen to ensure that the Department would have flexibility and environmental compliance to operate the system in a way that is responsive to actual hydrologic conditions and allows for the incorporation of Basin-wide innovative water management solutions. The sideboards, which are analyzed in the Final EIS, provide for annual releases from Lake Powell between 5.0 maf and 12.0 maf, Lower Basin shortages of up to 3.0 maf, the ability to store up to 8.0 maf and 3.0 maf of conserved water in Lake Powell and Lake Mead for future use, respectively, and the opportunity for voluntary Upper Basin conservation up to 200 kaf, subject to hydrology.
The Department would issue operating guidelines, within these sideboards, at anticipated 2-year periods, unless consensus-based agreements provide for a longer duration. It also establishes a structure under which operating guidelines will be developed, reviewed and periodically updated. This approach provides certainty regarding a decision process over the next 10 years while preserving the flexibility to adapt to changing conditions.
“This plan strikes a balance between flexibility and predictability for the Colorado River system that is vital to the 40 million people who rely on it given unprecedented hydrologic conditions and the potential for considerable impacts on water users,” saidAssistant Secretary for Water and Science Andrea Travnicek. “It also allows a new flexibility to respond to changing conditions and potential consensus.”
The Colorado River provides water for more than 40 million people and fuels hydropower resources in seven states. It serves as a vital resource for 30 tribes and two Mexican states, sustaining 5.5 million acres of farmland and agricultural communities throughout the West, while also supporting critical ecosystems and protecting endangered species.
Udall/Overpeck 4-panel Figure Colorado River temperature/precipitation/natural flows with trend. Lake Mead and Lake Powell storage. Updated through Water Year 2025. Note the tiny points on the annual data so that you can flyspeck the individual years. Credit: Brad Udall
Drought conditions over the past 25 years, combined with expectations of continued dry conditions, have made development of future operating guidelines for the Colorado River particularly challenging. The combined contents of Lake Powell and Lake Mead have not been this low since before Glen Canyon Dam began filling in 1963, and since 2000 water use has exceeded total system inflow in most years. The Colorado River Compact apportioned 7.5 million acre-feet to both the Upper and Lower Basins based on the estimated pre-compact average inflow (1906-1921) of approximately 18 million acre-feet. However, inflows from 2000 to 2024 have only averaged 12.9 million acre-feet and the unregulated inflow into Lake Powell this year as of July is estimated to be only 3.5 maf.
Between 2020 and 2024, the average consumptive use in the Colorado River Basin was 13.1 million acre-feet. That is broken down by:
Upper Basin Use: 3.8 million acre-feet (29%).
Lower Basin Use: 6.5 million acre-feet (49%).
Mexico Use: 1.4 million acre-feet (11%).
Evaporation: 1.4 million acre-feet (11%).
This Final EIS is the culmination of a NEPA process that was initiated in June 2023. Over this three-year period Reclamation engaged extensively with Basin stakeholders and that input is reflected in the alternatives analyzed in the Final EIS and the Preferred Alternative.
Reclamation received more than 18,000 comments, including 785 unique submissions from the public, tribes, states, federal agencies and others after releasing the draft EIS in January 2026. Reclamation evaluated substantive comments and updated the final EIS, with public input helping to shape the preferred alternative.
The Final EIS is available on Reclamation’s website.
The final EIS addresses only domestic river operations. A separate binational process addressing water deliveries to Mexico is nearing completion and the Department is committed to continued collaboration with Mexico. The Department will conduct all necessary and appropriate discussions regarding post-2026 operations and implementation of the 1944 Water Treaty with Mexico through the International Boundary and Water Commission in consultation with the Department of State.
Click the link to access the EIS on the Reclamation website. Here’s the abstract:
July 31, 2026
The Secretary of the Department of the Interior, acting through the Bureau of Reclamation, proposes the adoption of new guidelines and coordinated management strategies to address Lake Powell and Lake Mead through their full operating range to take effect when the current agreements expire in 2026. Management strategies will primarily focus on the operation of Glen Canyon Dam and Hoover Dam, but may include actions upstream and downstream of these facilities to protect critical reservoir elevations.
This Final EIS has been prepared to inform the Secretary’s timely adoption of a new set of guidelines that would be sufficiently robust and provide improved predictability to all water users and managers in the Colorado River Basin. This Final EIS has been prepared pursuant to the National Environmental Policy Act to address the formulation and evaluation of specific interim criteria and to identify the potential environmental impacts of implementing such criteria.
Map of the Colorado River drainage basin, created using USGS data. By Shannon1 Creative Commons Attribution-Share Alike 4.0
Between the reservoir and the endangered fish in the lower Gunnison sits the Gunnison Tunnel, which diverts water just below Crystal Reservoir at the head of the Black Canyon and carries it to about 80,000 acres in the Uncompahgre Valley. It belongs to the Uncompahgre Valley Water Users Association (UVWUA), which, as Colorado River District engineer Caleb Foy puts it, “holds a very senior water right” In Colorado, the oldest rights have priority over more junior rights. UVWUA is not untouched. It opened the season at 50% allocation — “just seeing the writing on the wall in regard to the poor hydrologic conditions,” Foy said. This means all UVWUA users receive half as much water as they would in a normal year. UVWUA’s other supply, Ridgway Reservoir, is ~85% full, but by design: the association told shareholders this spring that its “goal is to maintain storage in Ridgway Reservoir until mid-July to help support peak season demands.” And the natural flows in the Uncompahgre and Cow Creek that normally supplements UVWUA through the Spring and summer, delivered nothing — the association “received zero water in regard to direct flow water from the Uncompahgre system this year to date,” Foy said. Blue Mesa, he said, holds “multiple colors of water” — some stored under Aspinall Unit rights, some belonging to the association under a Taylor Park first-fill right. If the reservoir ever fell far enough that only the UVWUA’s water remained, that “would effectively dry up the Black Canyon.” Avoiding that is why the flows in the lower Gunnison are so low. It leaves the basin, in Foy’s words, in “a less risky neighborhood than we would have otherwise been in.”
Ruedi Reservoir was 65% full as of Wednesday. Increased releases out of Ruedi could bump up flows in the Fryingpan River to as high as 700 cfs. Credit: Heather Sackett/Aspen Journalism
Residents and anglers can expect to see high flows in the Fryingpan River in the month of August as water managers increase releases out of Ruedi Reservoir in an attempt to relieve the worst drought conditions downstream.
The Colorado Water Trust plans to begin releasing from a 4,700-acre-foot pool it leases in Ruedi on Monday. The Glenwood Springs-based Colorado River Water Conservation District also plans to begin releases from its 10,500-acre-foot Ruedi pool next week. Flows in the Fryingpan River are expected to typically be between 300 and 500 cfs while the releases are happening, though they could climb higher. It’s unclear how long the increased releases will last; it will depend on weather and precipitation over the coming weeks.
Water managers say flooding on the Fryingpan begins to be a concern around 800 cfs; River District officials say water managers will aim to keep the river below 700 cfs.
“We do not want to cause any flooding; we are very aware of that,” said Brendon Langenhuizen, director of technical advocacy for the River District.
Langenhuizen laid out details of the planned releases at a remote Zoom meeting of local leaders and water managers on Wednesday.
Although flooding may not happen until 800 cfs, impacts to the Fryingpan’s famous Gold Medal trout fishery happen long before that. Anglers generally like flows to remain below 300 cfs, the level at which wading becomes difficult and potentially dangerous.
Aspen Mayor Rachel Richards noted the dire conditions downstream, but asked if flows could be kept in the 300 to 350 cfs range when possible.
“Additionally, it’s more about the warning to fishermen if the water releases are changing rapidly,” Richards said. “I think the notification on the Fryingpan is what’s really critical here.”
Rick Lofaro, executive director of the Basalt-based Roaring Fork Conservancy, said his organization has already started getting the word out.
“There is an organization called the Roaring Fork Fishing Guide Alliance, and we are in lockstep with them,” Lofaro said. “We have already started to alert people to these increased flows, and the fishing community will be notified by the Roaring Fork Conservancy, along with the greater community.”
Bill Nein, of Salida, prepares to release a brown trout he caught back into the Fryingpan River. Anglers generally like flows to stay below 300 cfs for easy wading. CREDIT: HEATHER SACKETT/ASPEN JOURNALISM
As of Wednesday, Ruedi was about 65% full. Tim Miller, a hydrologist with the U.S. Bureau of Reclamation, noted that this year’s reservoir operations are pacing about 10 days ahead of 2002, which was another year where drought conditions increased releases and lowered water levels at the reservoir. When asked by a U.S. Forest Service representative about when the water level would become too low for the boat ramp to operate, Miller said exactly when is unclear but that it would happen in the next month.
Westwide SNOTEL basin-filled map May 31, 2026.
The Ruedi releases are aimed at alleviating the impacts of the worst snow-drought on record in the upper Colorado River basin, which are being felt on local waterways, as well as farther downstream. Pitkin County has issued a mandatory closure of the Roaring Fork River through the North Star Nature Preserve – a popular stretch for paddleboards and kayaks – because of unprecedented low flows. And Colorado Parks and Wildlife has issued voluntary fishing closures on portions of the Roaring Fork, Crystal and Colorado rivers due to low flows and high water temperatures.
The effects of drought are also being felt in the Grand Valley, one of the big agricultural hubs on the Western Slope with some of the most senior water rights on the Colorado River. The water from Ruedi will flow down to be used by irrigators in this area, who are currently about 500 cfs short of the water they need, according to Langenhuizen.
“This has been a tough year for a lot of people from the bottom of the basin all the way to the top, and a lot of people have been pitching in to help us get through and share resources,” he said. “Everybody’s kind of taking a hit this year.”
The River District’s Ruedi releases are part of its 2026 drought response plan. They are meant to cushion the blow of shortages in a pool of water in Green Mountain Reservoir known as the Historic Users Pool. HUP water is released mainly to satisfy farmers and ranchers in the Grand Valley, whose group of senior water rights — known as the Cameo call — are the commanding force on the river.
When Cameo places a call for its water, it can force junior users all the way up to the headwaters to shut off. The HUP also protects other water users, known as HUP beneficiaries, because without the releases from Green Mountain, Cameo would place more frequent calls, forcing these users to cut back.
However, this year, the HUP did not fill, causing repercussions up and down the river.
“This is really driven because we don’t have HUP coverage, which has an impact on a lot of users in the Colorado River basin, both municipal and irrigators,” Langenhuizen told Aspen Journalism in a separate interview. “We really tried to look at this as wholesale, like how can we help as many people in the Colorado River basin as possible?”
Depending on water demands, the 4,700 acre-feet from the Water Trust could be used by irrigators in the Grand Valley, or it could be used for hydropower generation in the Grand Valley and then flow into the 15-mile reach, a chronically water-short stretch of the Colorado River that is critical habitat for endangered fish.
Bicycling the Colorado National Monument, Grand Valley in the distance via Colorado.com
To bolster the Colorado River’s flow downvalley through historic drought, water authorities will be increasing the flow out of the Ruedi Reservoir through August. That water will flow into the Fryingpan River…Water will then flow into the Roaring Fork River, then down the Western Slope, where populations in Grand Valley are in “dire need,” he said…
Green Mountain Reservoir (back in the day) is owned by the U.S. Bureau of Reclamation and located in Summit County north of Silverthorne along the Blue River. Photo credit: Denver Water.
Traditionally, the Western Slope relies heavily on the Green Mountain Reservoir — about 17 miles south of Kremmling — to sustain a steady Colorado River flow. But due to the state’s dry, warm winter, that reservoir struggled to fill over the spring. The administrators of Green Mountain Reservoir found that low water levels and fast releases were exacerbating a slow-moving landslide on its banks, so they limited how much water could be released out of the reservoir to half a foot a day…
Tim Miller, a hydrologist with the U.S. Bureau of Reclamation that manages the levels at Ruedi Reservoir, said the reservoir played a similar supplemental role in 2002, when Colorado saw another historic drought. This year’s use of the reservoir is about 10 days ahead of then, he said.
On July 8, the Getches-Wilkinson Center visited the Kawuneeche Valley restoration site at Beaver Creek in Rocky Mountain National Park. Upon arriving at Beaver Creek, the team met with Isabel de Silva Shewell, the lead ecologist on the project with a background in riparian restoration, who gave us a tour of the restoration site.
The 30-acre area is located at the headwaters of the Colorado River, and is surrounded by an exclosure fence tall enough to prevent moose and elk from jumping over. While we were fortunate enough to meet with Isabel and receive a guided tour, members of the public are welcome to enter through the gates and see the restoration efforts firsthand.
The Kawuneeche Valley Restoration Project/Beaver Creek Site Description
The Kawuneeche Valley restoration project is an effort to restore the ecosystem impaired by human activity and the climate-driven stressors such as an unpredictable snowpack and overbrowsing by moose.
Nestled at the base of the Never Summer Mountains, Beaver Creek is one of four tributaries to the mainstem of the Colorado River included in the project’s restoration efforts. Since the 1950s, there has been a loss of 94% of surface waters associated with beaver ponds, and a 77% loss of tall willow acreage since 1999. As a result, the Kawuneeche Valley has transitioned from its historical beaver-willow wetland ecosystem with a high water table, that supported hydrophilic vegetation and was dominated by tall willow.
These changes have been driven by human diversion of water, the effects of climate change, and the loss of tall willow due to the influx of large populations of moose. The once-booming beaver population in the area declined with the loss of suitable habitat. Without beaver dams, the water saturation in the soil became insufficient to support a stable riparian buffer. Beaver Creek became loaded with sediment, and water quality declined. The site has been identified as a major contributor of sediment to the mainstem of the Colorado River.
The Impacts of Moose and Elk at Beaver Creek and Potential Solutions
In 1978-1979, moose were re-introduced into Rocky Mountain National Park on the west side. https://www.nps.gov/articles/moose-research-in-rocky-mountain-national-park.htm. Initially, only 24 moose were released and largely remained on the west side of the park. Id. Moose are typically solitary animals; however, warmer, shorter winters allowed moose to congregate and populations to boom. Id. Easier passage facilitated the movement of moose across the continental divide to the east side of the park. Id.
As of 2025, there were 240 moose estimated to be in the park. Id. Willows are a primary food source for moose. However, willows, whose stems only grow about six inches per year, do not regenerate quickly enough to support such a large moose population. Today, the site is marked by what Isabel referred to as “zombie willows,” or willows that have been chewed down by moose, leaving only the woody stems of the plants.
Evidence of the former beaver-willow ecosystem is found throughout the site. Depressions indicate where beaver dam surface waters had existed in previous decades; willows that had been chewed down to woody stubs have new growth, and wetland vegetation such as sedges dominate the area.
In addition to constructing beaver dam analogs, the park service is attempting to address moose populations. Exclosure fences have been successful in keeping moose and elk from entering the restoration site. However, this is only one component of long-term population management measures. Discussions of potential solutions include measures put in place in 2008 by the Elk and Vegetation Management Plan (EVMP). In addition to exclosure fences, these efforts also include the culling of individual moose. Hunting is not permitted in the park, and moose have no natural predators in the area to keep populations in check. Therefore, such measures may be necessary to restore balance to the ecosystem.
“Beaver Dam Analogues” or “Temporary Wood Grade Structures,” or TWGS, (pronounced like twigs), are designed to help back up water and create a lively wetland habitat that encourages healthy biodiversity not just for the cutthroat, but the entire ecosystem. They are being employed in what’s called “Process-Based Restoration.” These man-made structures are relatively easy and straightforward to make. They are built with natural resources such as wooden posts, willow branches, aspen branches, and rocks. Though they are simple to create, Remshardt said “we’re not as good at building them” as the beavers. Photo courtesy Rio Grande Headwaters Restoration Project
Beaver Dam Analogs
The main tool utilized to restore the site to a functioning beaver-willow wetland ecosystem are beaver analogs. Beaver analogs are wooden structures that span the creek in a manner that mimics beaver dams. They raise the water table upstream, increase channel complexity, promote resilience to high runoff in the snowpack, trap fine sediment, and store water across the floodplain. The analogs were built using lodgepoles from the surrounding area to mimic the natural ecosystem sourced from fuel-mitigation events in the park.
Restoration efforts are already yielding encouraging results. Groundwater quantity is continuously monitored at the site. Since the installation of the analogs in 2024; levels have slowly and steadily risen. Water quality at the site has improved, and benthic microorganisms highly sensitive to water quality have reappeared in the creek.
With the diminishment of willows over the years, invasive plant species such as the Canada Thistle flourished. Since the start of the project, Isbabel said there has been an evident decrease in Canada Thistle, leaving more room for willows to grow.
Takeaways and Further Information
Overall, the GWC would like to thank Isabel and all those at RMNP and the Kawuneeche Valley Restoration Project for this fantastic opportunity. The team greatly enjoyed seeing the site first-hand, looking at the impact of overbrowsing, and how the ecosystem has begun to heal. Being on the headwaters of the Colorado River was a reminder of all the components that go into maintaining a healthy, thriving river that can support the surrounding habitat and those downstream.
If would like to help out, please consider volunteering at a future event. Previous volunteer opportunities have included revegetation efforts such as willow staking. There is potential for volunteers to help build and maintain materials for dam infrastructure at events in the future. More information can be found here: https://www.nps.gov/romo/getinvolved/volunteer.htm
