How much water remains in aquifers of SE #Colorado? — Allen Best (BigPivots.com)

Corn in Baca County. Photo credit: Allen Best/Big Pivots

Click the link to read the article on the Big Pivots website (Allen Best):

February 28, 2026

Study being completed will help guide decisions about continued mining of groundwater in the Springfield area. Ogallala will be gone within 20 years, but deepest formation could last a century.

Before center-pivot sprinklers powered by rural electrification in the mid-20th century, farmers in Colorado’s southeastern corner necessarily relied upon what came from the sky for water. HIgh-capacity pumps, first used in the Springfield area during the late 1940s allowed the farmers to go underground, to more lucratively plumb a series of aquifers and deliver far-higher crop yields.

The Ogallala — also called the High Plains — is the water-bearing geologic formation nearest the surface, followed by the more water-rich Dakota and Cheyenne formations. Underlying both is a far larger reservoir yet called the Dockum Group.

How long will that water last? A new report commissioned by Colorado, still in rough draft stage, finds that a little more than 2,000 wells mine these formations in Baca County and a portion of adjoining Prowers County. The vast majority of the water, 97%, irrigates alfalfa, corn and other crops. Remaining water goes to hog farms, stock ponds, and domestic wells for farmhouses as well as municipal supplies in Springfield and several even smaller towns.

An average 157,000 acre-feet were mined annually from these subterranean deposits from 2020 through 2024. To put that into perspective Denver Water delivers an average 232,000 acre-feet to the 1.5 million residents in Denver and adjoining jurisdictions.

The answer to the question about how long the water will last has not been fully answered. At current rates of pumping, the Ogallala will be gone by 2045, according to this draft study. The next two deeper formations, Dakota and Cheyenne, have been depleted more rapidly but have more water.

The deepest water, in the Dockum, could last a century or more. It depends partly on the quality of water extracted at greater depths. There seem to be some unknowns about this. Cost of extraction is also a factor. Deeper wells cost more money to drill. It also takes more electricity to pump water to the surface. Would crop prices justify the added expenses?

Pueblo can be seen in the upper left-hand corner of this map, and the southern high plains district is designated by lavender.

With those asterisks in mind, the study estimates nearly 33 million acre-feet of water can be economically recovered from the four water-bearing geologic formations in that southern high plains groundwater district.

On average, Colorado consumes 5.3 million acre-feet of water per year, although some of that water gets reused. Think of runoff from farm fields or treated sewage that reenters streams and rivers. When that is added up, Colorado’s total diversions hit 15.3 million acre-feet. This southern plains basin bordering Kansas and Oklahoma is just a small part of Colorado.

Unlike Colorado’s rivers, which are mostly derived from snowmelt and rainfall, the groundwater recharges but much more slowly than the extraction. This study estimates an annual recharge of 32,000 acre-feet compared to the 157,000 acre-feet withdrawn.

Apart from the river valleys, dryland areas of southeastern Colorado were among the last places homesteaded in Colorado. First came the settlements of Denver, Colorado Springs, and Boulder with their access to water from the mountain streams and rivers and proximity to the mountain mining camps. Very quickly, water was diverted to create farms.

Homesteading of the high plains began about 30 years later. By then, the buffalo were gone, and the last battle with Native Americas had occurred in 1869 at Summit Springs. Settlement near Springfield, Walsh and other Baca County towns continued through the 1920s. Peak settlement occurred in about 1930, before the weather turned hotter and drier and the skies filled with dust. Baca County during the decade of the Dust Bowl and the Great Depression lost more than a third of its population.

Baca County since then has continued to lose population as farm sizes have grown. While groundwater extraction has provided a modicum of prosperity, the county ranked 57th among Colorado’s 64 counties in per-capita income as of 2022.

The hydrogeology that is believed to exist in this basin can be seen in this west-east profile. Some formations, including the Graneros and Kiowa shales, contain no water and act as barriers.

The Colorado Ground Water Commission — created in 1965, before groundwater became a common word — has legal purview over extraction. The commission can set limits on the allowable rate of depletion.

The southern high plains district limits new wells within a half-mile of existing high-capacity wells. But it is still possible to get a permit for a new well. That is in dispute. Some think the basin needs to be “closed,” to bar future wells and hence prolong the life of the aquifers.

Cimarron River Basin. By Shannon1 – Drawn by myself; shaded relief data from NASA SRTM North America imagery here, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=12115861

This groundwater basin in southeastern Colorado is very different from the Republican River Basin of northeastern Colorado in one crucial way. The aquifers do not deliver water to a river subject to a multi-state compact. The Cimarron River nicks the extreme corner of Colorado, but testimony to the poverty of water in this “river” is provided by those traveling to Santa Fe in the 19th century. Nearly all followed the Arkansas River, not the Cimarron, despite the latter route being much shorter.

In contrast, a compact struck in 1943 governs flows in the Republican River. It arises far from Colorado’s mountains and is instead nourished by water seeping out of the Ogallala in places like Holyoke and Yuma and Burlington. Mining of groundwater in the basin to grow crops reduced flows to the extent that Kansas sued Nebraska, which in turn sued Colorado. Now, farmers in the basin are trying to reduce their withdrawals by voluntary retirement of 25,000 acres from active irrigation. The 19,000-plus acres retired so far have been induced by financial incentives that tap federal but also state funds.

Without a compact to force reduced pumping in southeastern Colorado, the state can adopt its own rules.

Residents of southeastern Colorado appear to be somewhat conflicted about whether new rules governing withdrawal are needed and what they should look like. Baca County’s Herald Plainsman in March 2023 reported on a “highly charged” meeting in Springfield called by the state’s Division of Water Resources. Tracy Kosloff, the deputy state engineer, explained that a group from the community had requested a rule change in the previous year.

Their intent was to block the issuance of new permits for high-capacity wells. Kosloff asked for the community to come to a consensus, if possible.

No consensus was evident at that meeting. at least according to the Plainsman Herald report. One speaker said that “without high-capacity wells, there will be no people left in the county.” Tim Hume, who is the region’s representative on the Colorado Ground Water Commission, said that without irrigation, two thirds of the people in the room would not be there. He also noted that one of the 67 monitoring wells had actually shown higher levels in the previous 20 years. But another speaker, Jack Dawson, said to keep irrigation going for quite some time, there was a real need to start conserving water.

With aid of a special $250,000 appropriation by state legislators, the Division of Water Resources commissioned a study by Wilson Water Group and HRS Water Consultants to provide new estimates of how much water remains that can be recovered economically. These consultants are also creating a planning tool to allow groundwater basin users to evaluate future groundwater use scenarios.

At a meeting scheduled for March 16 in Springfield, the consultants hope to glean insight from farmers about what constitutes economically viable extraction. How deep into the Dockum can they go and hope to be able to make money? How much water treatment is required and feasible? The big question is whether new rules will be needed to limit extraction.

Also to be determined are the goals under future conditions. How fast should the groundwater be mined? Or should there be limits beyond those few already in place?  The consultants are to submit a final report before the end of 2026.

What comes of this new knowledge? It’s possible — maybe even likely — that some residents of southeastern Colorado will then file a petition with the Colorado Ground Water Commission to adopt new rules restricting extraction. This study sets up the facts for helping make that decision of whether to do so, and if so, how.

The draft study says a range of viewpoints can be expected. Some stakeholders will favor the status quo. Others might favor restricted pumping from specific aquifers or even from new wells, conceivably all wells. Expansion of irrigated acreage cold be curbed — although in some cases land has been taken out of irrigated production already.

Also relevant is the shifting climate. The study mentions climate change just once, noting that hotter or drier conditions may occur in 50 years, affecting crop irrigation requirements. Already, however, the hotter temperatures of southeastern Colorado cause crops to need a third more water than those grown 200 miles north.

The most direct parallel to a ban on new wells in southeastern Colorado would be a similar ban on new wells in the upper Crow Creek drainage northeast of Greeley near the Wyoming border. The alluvial, Fan and White River aquifers within the designated basin were declared over-appropriated effective April 14, 2017.

Hydrogeology of Colorado’s southeastern corner has been studied several times. First was a studyby the U.S. Geological Survey in conjunction with the Colorado Water Conservation Board completed in 1954. It recorded springs and creeks and pumping from wells for house and towns and stock ponds, with some of the records gleaned by New Deal workers in the 1930s. It made no attempt to quantify groundwater storage volume. Aquifer mining was non-existent in that area as high-capacity pumps had been created less than a decade before.

1967 study by R.W. Beck and Associates did attempt to quantify the groundwater resources. It estimated that groundwater extraction of 13,200 acre-feet in 1950 had grown by 1964 to 118,700 acre-feet.

The study projected that groundwater extraction in the basin would grow to 276,000 acre-feet by 2017. It is somewhat less. That study also projected that population of Baca County would grow to 4,700 by 2017. Actually, it declined to 3,500.

That study made no mention of the Dockum, the formation now believed to have the most water, based on well logs and other lines of evidence.

That study also recommended creation of a groundwater management district to assist in “development” of the extraction. That district was created.

Southeastern Colorado’s groundwater was also part of a six-state study of the Ogallala Aquifer in 1983.

Most recent were two related reports in 2002 by McLaughlin Water Engineers. This new study differs in a substantial way in that it uses data deeper than the 200 feet of the Dockum and hence increases the volume of water that may potentially be extracted. It also employs newer tools to figure out what exactly is going on down there in the dark, although exactly how much sharper insight this report delivers is not yet clear.

The Division of Water Resources also has conducted three studies in this century that define a steady but not dramatic decline of the aquifers in southeastern Colorado.

See Updated Southern High Plains Groundwater Study Draft Report and Planning Tool at the High Plains Study website.

Water Wars and Hidden Riches on #Colorado’s High Plains — Westword #groundwater

From Westword (Alan Prendergast):

If nothing else, [Wes] McKinley’s crusade has brought attention to the profound disconnect between the emerging water crisis in eastern Colorado and a state policy that encourages total depletion of the resource. The surface water in virtually all of the state’s major river basins, from the Colorado, Arkansas and Rio Grande rivers to the humblest creeks, has been over-appropriated for decades. The major source of non-tributary water in the Far Quarter is the High Plains Aquifer, also known as the Ogallala Aquifer. Farms and ranches have been draining the aquifer, a vast underground reservoir of fresh water stretching across eight states, at an accelerating rate, despite warnings that the overpumping is likely to have catastrophic effects on fish habitat, interstate compact agreements and the sustainability of the aquifer itself, which requires centuries to recharge.

Cimarron River Basin. By Shannon1 – Drawn by myself; shaded relief data from NASA SRTM North America imagery here, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=12115861

The warnings have been trickling through Baca County for more than fifty years. A 1966 study of groundwater in the area of the Cimarron River, which cuts across the southeast corner of Colorado and then vacillates between Kansas and Oklahoma, concluded that “the most serious problem in the Cimarron Basin appears to be the extreme decline of water levels from pumping.” A 2001 report prepared for the Southern High Plains Groundwater Management District noted that groundwater levels in the district had dropped a hundred feet in the past half-century; the report recommended a moratorium on all new and replacement wells in the High Plains Aquifer, except for domestic wells with a modest pumping rate of 15 gallons per minute.

Yet no moratorium was ever put in place. Instead, the Colorado Ground Water Commission has continued to issue large-capacity well permits like they were gimme caps. Data provided by the Colorado Division of Water Resources indicates that the commission granted 64 permits for new wells in the Southern High Plains in the last 21 months — a rate that’s more than triple the average number for the previous five years.

“Colorado does not have a statutory directive that impact to an aquifer needs to be considered when issuing a well permit,” says Kevin Rein, the state engineer, who also serves as executive director of the groundwater commission.

Long-range studies about climate change and dwindling aquifers don’t figure in the permitting process, which is preoccupied with mundane questions of how many other wells are operating within half a mile of the new well and whether an immediate neighbor would suffer “material damage” from additional pumping. McKinley contends that the rules as currently written don’t adequately protect the resource and shift the burden of proof to the opponents, who have to show that their own water rights would be adversely impacted by a new well. But Rein points out that some groundwater management districts have successfully petitioned the commission for a declaration that their area is over-appropriated, a finding that prevents the issuance of new well permits.

“That has happened in many of the basins, but it hasn’t happened in the Southern High Plains,” Rein observes. It isn’t the commission’s place to get involved in promoting such prohibitions or seeking changes in the law that would protect the High Plains Aquifer from more wells, he adds: “As the state engineer, I don’t have the charge to bring that sort of policy discussion.”

Water attorney Curtis estimates that McKinley’s objections cost his clients $200,000 in legal expenses and delays. McKinley’s time would have been better spent, he suggests, gathering the required technical data to petition the commission to close the district to new wells.

“Water rights are vested property rights, and you can’t strip someone of those rights without a proper basis,” Curtis says. “He knows the process. Either he doesn’t have the energy to do it the right way or he doesn’t care. But he never presented a single piece of relevant evidence to support his position.”

A major factor in the recent surge of permits in Baca County is a ramping up of irrigation wells on the Cimarron Valley Ranch, a 45,000-acre cattle ranch that stretches along 22 miles of the Cimarron River in Oklahoma and Colorado. Owned by Georgia-based LGS Holding Group, the property is for sale for $39,900,000, reduced from $45 million. An online real estate listing touts “some of the best hunting in the country,” including the ranch’s resident elk herd, as well as “incredible diversity in regard to terrain, wildlife, livestock grazing, income opportunities and more.” Also prominently mentioned is the ranch’s ample water supply and new well permits, which will allow the operation to double its number of irrigation pivots.

The mega-ranch’s wells account for nearly half of the permits the commission has issued in the Southern High Plains over the past two years. That rankles local rancher Dan Caldwell, a longtime friend of McKinley’s, whose property lies just across the state line from the Oklahoma stretch of the Cimarron Valley Ranch. Caldwell says that he, too, filed an objection to the LGS permits, but was told he hadn’t proved material damage — and that he could be liable for legal fees if he persisted. He knew his objection wasn’t going anywhere, he says, when he learned a representative of the Colorado Attorney General’s Office was joining the case —representing the groundwater commission, not the citizens of Baca County.

“We have no recourse,” Caldwell says. “We are nothing to them. There’s no reason to give our water away so freely, but they’re doing it.”

The Southwest Kansas Groundwater Management District also protested the LGS applications, on the grounds that new pumping along the Cimarron River was bound to diminish supplies downstream. A few years ago, Kansas won a long-running lawsuit concerning Colorado’s excessive water use under the Arkansas River Compact, but no such compact exists regarding the Cimarron.

“Colorado has a presumption that there’s water available for any application unless there’s a hearing,” notes Mark Rude, executive director of the district. “We had to become an opposer of the application in order to be involved in the hearing process. We’ve since discovered that Colorado works to not have a hearing process.”

Like Caldwell and McKinley, Rude was told there wouldn’t be a hearing because he lacked the legal standing to object. Southwest Kansas no longer permits new wells that would draw upon the High Plains Aquifer out of concern over the falling water table. But neither Colorado nor Oklahoma has followed suit.

“We have tools in Kansas to propose reductions in allocations, just to make the water last a little longer,” Rude says. “But it’s hard to have those conversations locally when people say, ‘Well, it’s unrestricted in Colorado and the Oklahoma Panhandle.’”

Rein calls the recent spike in permits in Baca County “anomalous” and doesn’t see any particular cause for concern in the recent water enhancements at a 45,000-acre ranch. “Certainly, some people in the basin are alarmed,” he says. “Is the commission alarmed? I don’t think we’ve had open discussion about that.”

McKinley doesn’t know what his objections might have accomplished, but he hopes more people will ask questions about where the water is going. “You don’t know what works and what don’t,” he says. “I’ve always thought there’s nothing wasted; it’s an experience gained. Sometimes, though, you pay a lot of tuition and wonder what you’ve learned.”

Dinosaur tracks in Picketwire Canyon. Photo credit: USFS

The only public access to the dinosaur tracks in Picketwire Canyon is by way of the Withers Canyon trailhead, an eleven-mile round trip. With the guided four-wheel tours suspended, you have three choices for mode of transport: mountain bike, horseback or on foot.

Bikers might think twice, after watching a few cautionary YouTube videos about the many, many goat’s head stickers and opportunities for flat tires. The horse option has some drawbacks, too; although most of the path is a level stroll along the canyon floor, the steep descent into the canyon on a rock-strewn trail and the purgatorial ascent at the end may not be something you want to do on top of a thousand-pound animal.

That leaves the third option, a six-hour hike in rugged and largely exposed country. Since temperatures in the canyon can be intense from late spring until early fall, reaching as high as 110 degrees in July and August, the Forest Service advises visitors to carry “at least” a gallon of water per person. (In 2017, two summer hikers died in separate heat-related incidents.) But on a temperate fall day, the startling, shifting environment of the canyon — from juniper-and-piñon prairie to meadows lined with cottonwoods to bright fields of yarrow and cacti in bloom — can make you forget you’re wandering through the northern edge of the Chihuahuan Desert.

For most visitors, the highlight of the journey is crossing the Purgatoire to arrive at a vast limestone plain, the stamping ground of monsters. The giant paw prints embedded in the ancient lake shore, back when the canyon was a lush, steamy tropical retreat, tell a story about lumbering, plant-eating apatosauruses traveling in gregarious herds, and the three-toed carnivores who stalked them. This quarter-mile stretch of the river is the most extensive set of dinosaur tracks in North America, yet it’s just a small portion of the Jurassic riches in the area; numerous fossils have been painstakingly unearthed by volunteers under the supervision of a Forest Service paleontologist.

The bones and tracks may be the main draw, but they’re hardly the only one. In 1988, a University of Wisconsin student on a field trip headed down from the west rim of the canyon to check out the dinosaur tracks. On the way down, he came across a petroglyph panel in a shallow alcove and snapped a picture of it. He assumed the panel was already well known to researchers. It wasn’t. According to Loendorf’s account in his book Thunder & Herds: Rock Art of the High Plains, when a wildlife biologist familiar with the canyon saw the photo, “he realized that he was looking at a significant and previously unknown site.”

The panel features a single human figure in the center, surrounded by three dozen quadrupeds — some with elaborate antlers, some suggestive of bison and sheep. The central figure holds an object in its right hand, possibly a net or snare, indicating a form of control over the animals. Loendorf regards the Zookeeper, as the panel has become known, as one of several key rock-art sites in the area that provide glimpses into the hunter-gatherer culture that once flourished there. He believes a climatic event more than 600 years ago, one that ruined crops and drove the game away, may have been responsible for its abrupt disappearance.

“You have these obvious hunt scenes, driving animals — antelope, probably — into nets, and then it just ends,” he notes. “It pretty much suggests that the Apishapa were affected, like all of the Southwest, by drought. I personally think at least some of the Apishapa people were seasonal and pulled back to the mountains in the wintertime. And the drought period ended that; then they stayed close to the mountains year-round. Then came the Apache and the Comanche. They weren’t dependent on trying to grow corn.”

Governor Kelly appoints three members to #Kansas Water Authority

Rivers of Kansas map via Geology.com

Here’s the release from Governor Kelly’s office:

Governor Laura Kelly appointed three members to the Kansas Water Authority. The Kansas Water Authority plans for the development, management and use of state water resources by state or local agencies.

Kelly appointed the following members:

1) David Stroberg (R), Hutchinson, for the central Kansas groundwater management district seat, from names provided per statute K.S.A. 74-2622 by districts #2 and #5.

2) Chris Ladwig (U), Derby and Spirit Aerosystems, for the industrial water users seat, from names provided per statute K.S.A. 74-2622 by the Kansas Chamber of Commerce.

3) State Senator Carolyn McGinn (R), Sedgwick, for the environment and conservation seat, replacing Department of Wildlife, Parks and Tourism Secretary Brad Loveless.

The Kansas Water Authority is made up of 24 members. Of these 24 members, 13 are appointed positions. The governor appoints 11 members, including the chair. One member shall be appointed by the President of the Senate, and one member shall be appointed by the Speaker of the House of Representatives.

Of the members appointed under this provision, the Governor appoints from the following requirements:

1) One shall be a representative of large municipal water users;
2) One shall be a representative of small municipal water users;
3) One shall be a board member of a western Kansas Groundwater Management District;
4) One shall be a board member of a central Kansas Groundwater Management District;
5) One shall be a member of the Kansas Association of Conservation Districts;
6) One shall be a representative of industrial water users;
7) One shall be a member of the state Association of Watershed Districts;
8) One shall have a demonstrated background and interest in water use, conservation and environmental issues;
9-10) Two shall be representatives of the general public.

2019 #NMleg: Professor warns legislators: Get serious on climate — The Sante Fe New Mexican #ActOnClimate

Photo via the City of Santa Fe

From The Santa Fe New Mexican (Andrew Oxford):

“The world will be moving away from fossil fuel production,” David Gutzler, a professor at the University of New Mexico and member of the Intergovernmental Panel on Climate Change, told members of the House Energy, Environment and Natural Resources Committee.

Gutzler went on to paint a stark picture of New Mexico in a changing climate.

The mountains outside Albuquerque will look like the mountains outside El Paso by the end of the century if current trends continue, he said.

There will not be any snowpack in the mountains above Santa Fe by the end of the century, Gutzler added.

We have already seen more land burned by wildfires, partly because of changes in forest management and partly because of climate change, Gutzler said.

Water supply will be negatively affected in what is already an arid state, he said.

“It’s real. It’s happening. We see it in the data. … This is not hypothetical in any way. This is real and we would be foolish to ignore it,” Gutzler said.

The professor warned lawmakers that the state must get serious about greenhouse gas emissions now by expanding clean energy sources and mitigating the societal costs of moving away from fossil fuels.

That cost, though, will be a sticking point for Republicans. Many of them represent southeastern New Mexico and the Four Corners, where oil and mining are big industries.

Raton: Partnership nourishes Rio Grande cutthroat habitat

riograndecutthroatnmgameandfish.jpg

Here’s the release from the New Mexico Department of Game and Fish (Rachel Shockley):

Thanks to a collaboration between the Department of Game and Fish, Colorado Division of Parks and Wildlife, Vermejo Park Ranch and the U.S. Fish and Wildlife Service, the Rio Grande cutthroat trout will have protected habitat long into the future.

A Candidate Conservation Agreement with Assurances (CCAA) for Vermejo Park Ranch, recently approved by the U.S. Fish and Wildlife Service, will help conserve and restore the New Mexico State Fish and other native fish in the Costilla watershed.

The Department works closely with private landowners, states and federal agencies to recover sensitive species and their habitat. By proactively agreeing to conservation activities within a project area, a CCAA can protect existing uses such as agriculture, recreation or commercial activities if a covered species becomes federally protected.

“We have been working together for 10 years to make sure we can address the needs of the Rio Grande cutthroat trout and other native fish living in the watershed, while ensuring private landowners continue to be able to manage their own lands. This agreement does that,” said Department Fisheries Chief Mike Sloane.

The Rio Grande cutthroat is easy to recognize with its red throat slashes, rosy belly and spotted sides. Anglers have long enjoyed the colorful fish and have contributed millions of dollars to conservation and habitat restoration for the species through the purchase of fishing licenses and fishing equipment. At Vermejo Park Ranch, non-native trout were removed and Rio Grande cutthroat were stocked. Non-native trout will continue to be removed from the waterways until the restoration is complete. Because of the CCAA, the Costilla basin is set to provide important habitat for New Mexico’s native trout for many years to come.

“The CCAA is a no brainer for us,” said Carter Kruse, aquatic resource coordinator for Turner Enterprises. “If the Rio Grande cutthroat trout is listed under the Endangered Species Act, it provides us the protection and flexibility to design the activities on the ranch, and as private landowners, to manage the property to the best of our abilities for conservation and for economic sustainability. We hope we can be an example for other private landowners that you can still do your ranching activities and participate in conservation. We’ve done it, it works, here’s how.”

Although not listed as endangered, the Rio Grande cutthroat trout is a candidate species for federal protection under the Endangered Species Act. The Department is working hard to keep the fish off the endangered species list by increasing the subspecies’ range and the number of populations through habitat restoration and stocking. Currently, Rio Grande cutthroats are found in about 10 percent of the species’ historic habitat, which encompassed the Rio Grande, Pecos River and Canadian River basins in New Mexico and Colorado. The species faces many challenges, including non-native fish, fragmented populations, drought and poor habitat.

From the Associated Press via The Denver Post:

Wildlife officials in New Mexico and Colorado have teamed up with the Vermejo Park Ranch near Raton to protect habitat for the Rio Grande cutthroat trout. The New Mexico Department of Game and Fish says federal officials have approved a conservation agreement for the northern New Mexico ranch that is aimed at conserving and restoring the trout along with other native fish in the Costilla watershed. The agreement gives the ranch flexibility in managing its private lands while working to meet the needs of the fish if it’s ever listed under the Endangered Species Act.

The trout are found in about 10 percent of their historic habitat, which encompassed the Rio Grande, Pecos River and Canadian River basins in New Mexico and Colorado. Threats facing the species include non-native fish, fragmented populations, drought and poor habitat.

More endangered/threatened species coverage here and here.

NGWA Conference on Great Plains Aquifers: Beyond the Ogallala — October 25-26

ogallalaaquiferriverbasins.jpg

Here’s the link to their registration webpage.

More groundwater coverage here.