#California #Water Agencies Submit #ColoradoRiver Modeling Framework to Bureau of Reclamation — Colorado River Board of California #COriver #aridification

Graphic via Holly McClelland/High Country News.

Click the link to read the release on the Metropolitan Water District of Southern California website:

Proposal Outlines Constructive Approach to Achieve Necessary Water Use Reductions through 2026 to Protect Critical Infrastructure, Prioritize Public Health and Safety

California water agencies that rely on the Colorado River today proposed a modeling framework for the U.S. Bureau of Reclamation to evaluate as it considers actions to help stabilize reservoir elevations and protect critical infrastructure to ensure the Colorado River system can continue to support 40 million people, nearly 6 million acres of agriculture, and Tribes across seven states and portions of Mexico.

The modeling framework outlines a constructive approach to achieve additional water use reductions while protecting infrastructure, prioritizing public health and safety, and upholding the existing body of laws, compacts, decrees, and agreements that govern Colorado River operations (known collectively as the Law of the River). The approach builds on the California agencies’ commitments announced last fall to voluntarily conserve an additional 400,000 acre-feet of water each year through 2026 to protect storage in Lake Mead and help stabilize the Colorado River reservoir system.

California’s proposed framework seeks to protect Lake Mead elevation of 1,000 feet and Lake Powell elevation of 3,500 feet by modifying some parameters governing reservoir operations, maximizing the impact of existing plans and voluntary conservation actions, and increasing cutbacks if Lake Mead elevations decline. It also protects baseline water needs of communities across the West by prioritizing water supplies for human health and safety. The proposal was carefully developed to enable workable phased water use reductions and ensures protection of adequate water volumes in Lake Mead and Lake Powell.

The Salton Sea (pictured above ) straddles the Imperial and Coachella valleys and has long been a sticking point in Colorado River deals. But the federal government recently committed up to $250 million for restoration efforts at the sea. (Source: Water Education Foundation)

ā€œThe alternative provides a realistic and implementable framework to address reduced inflows and declining reservoir elevations by building on voluntary agreements and past collaborative efforts in order to minimize implementation delays. California’s alternative protects critical elevations and uses adaptive management to protect critical reservoir elevations through the interim period,ā€  — JB Hamby, chair of Colorado River Board of California and California’s Colorado River Commissioner, wrote in a transmittal letter to Reclamation.

The approach differs from a modeling proposal submitted to Reclamation on January 30 by the six other basin states. The six-state proposal would direct the majority of water use reductions needed in the Lower Basin to California water users through a new apportionment method based on ā€œsystem and evaporative losses.ā€ The proposal directly conflicts with the existing Law of the River and the current water rights system and mandates cutback without providing tools to manage reductions.

For the past several months, California water users have sought a timely, practical and implementable solution with other Lower Basin users that can be implemented over the next three years to protect critical elevations in Lake Mead while longer-term changes are negotiated to update 2007 Interim Guidelines that will expire at the end of 2026. Suggestions to fundamentally change the Law of River are appropriately addressed through this shared process to update the guidelines.

California’s water agencies remain committed to working with all Colorado River basin states to take urgent, fair, and achievable action now to avoid unacceptable risks to communities, farms and economies in California and the rest of the basin.

For decades, California has been a leader in managing its Colorado River water resources and collaborating in basin-wide efforts to more effectively operate and manage the reservoir system and to incentivize water conservation as demands have increased in the face of shrinking supplies due to climate change.

In 2003, California permanently reduced its use of Colorado River water from about 5.2 million acre-feet annually to its basic apportionment of 4.4 million acre-feet, a permanent annual reduction in water use of about 800,000 acre-feet. The reduction in use resulted from implementing a combination of agricultural and urban conservation activities. Since 2003, water users in California have taken significant actions to conserve Colorado River water, adding over 1.5 million acre-feet and 20 feet of elevation of conserved water to Lake Mead since 2007. California water users committed to further conservation to bolster storage in Lake Mead through the 2019 Drought Contingency Plan. California has invested billions of dollars in urban and agricultural conservation across Southern California, through programs that reach virtually every Colorado River water user in the state.

“Twenty years ago, California adopted the largest water conservation-and-transfer agreement in U.S. history that not only supports the bulk of our nation’s food system but also sustains the environment. This multi-billion-dollar conservation-focused framework – the Quantification Settlement Agreement – is the blueprint for other states to follow. California has done its part and is willing to do more, but it’s time for the other states to step up and create their own conservation programs that sustain the quality of life in their communities,ā€ said Jim Madaffer, vice chair of the Colorado River Board of California, representing the San Diego County Water Authority.

ā€œFor over 20 years, Metropolitan has met the challenge of reducing our use of Colorado River water, and we are committed to doing more now. But we must do it in a way that does not harm half of the people who rely on the river – the 19 million people of Southern California. We must do it in a way that does not devastate our $1.6 trillion economy, an economic engine for the entire United States. We must do it in a way that can be quickly implemented, adding water to lakes Mead and Powell without getting mired in lengthy legal battles. We must do it in a way that maintains and strengthens partnerships on the river, allowing us to work together to build longer term solutions. The proposal presented today by California does all of this by equitably sharing the risk among Basin states without adversely affecting any one agency or state. The plan presented yesterday, which shut out California, does not. California knows how to permanently reduce use of the river – we have done it over the past 20 years, through billions of dollars in investments and hard-earned partnerships. We can help the entire Southwest do it again as we move forward,ā€ said Adel Hagekhalil, general manager, Metropolitan Water District of Southern California.

ā€œThe Colorado River – Imperial Valley’s only source of water – supports far more than our rural disadvantaged community as it provides for a robust agricultural industry that feeds millions of people and provides food security for this nation. California, and particularly the Imperial Irrigation District, is working to be part of the solution, however we also believe in upholding the Law of the River and not shouldering the burden of supply limitations for states and agencies that have outgrown their water rights. California has spent the past two decades successfully working together to resolve intra-state supply and demand imbalances to sustain the Colorado River. Since the signing of the Quantification Settlement Agreement, the largest ag-to-urban water conservation and transfer agreement in U.S. history, IID’s water management programs have generated over 7.2 million acre-feet in support of the Colorado River system. Today, IID and its California partners have proposed a balanced and implementable plan that begins to address the monumental challenges we face with the ongoing Colorado River drought,ā€ said Henry Martinez, general manager, Imperial Irrigation District.

A water recharge basin in Southern California’s Coachella Valley. Source: California Department of Water Resources

ā€œHistorically, CVWD and our agricultural community have invested heavily in its irrigation delivery system to minimize water loss, including canal lining projects, a closed pipe irrigation distribution system and installing drip irrigation. We have prioritized the efficient use of Colorado River water over the long term. We also took action last year with other California agencies to voluntarily identify a collection of Colorado River water conservation and reduction actions to save 400,000 acre-feet annually through 2026. We support our California partners and are committed to reaching a 7-basin state consensus on a framework for additional water use reductions through 2026,ā€ said Jim Barrett, general manager, Coachella Valley Water District.

The farms of the Palo Verde Valley draw water from the Colorado River. Visual: Dicklyon / Wikimedia Commons

“One-hundred and forty-six years ago, the original developers of our Palo Verde Valley filed and were granted the very first water rights to Colorado River water. Secured by those rights, farmers and farm workers have invested multiple generations of farm loans and hard work to produce food and fiber for consumers. Surrounding our agriculture are small rural cities that depend exclusively upon Colorado River water for their domestic supply. Farmers and landowners in Palo Verde Irrigation District want to be part of a solution to the current mismatch of supply and demand on the River in a manner that honors existing Public Law, and Administrative Law,”  said Bart Fisher, president, Palo Verde Irrigation District Board of Trustees.

ā€œThe Colorado River has been the lifeblood of the Quechan people since time immemorial, and we have a deep and abiding responsibility to be good stewards of the River – for the Tribe and its members, for the species and ecosystems that it sustains, and for the benefit of our fellow tribes and non-Indian neighbors throughout the Basin. It is why we have always fought for and will continue to defend our water. The modeling proposal submitted by the State of California to the Bureau of Reclamation for inclusion as part of its development of the SEIS reflects a meaningful effort to address the hydrologic challenges facing the Basin while respecting the senior water rights of the Tribe and others and ensuring that the Colorado can continue to exist as a living river,ā€ said Quechan Tribal Council President Jordan Joaquin.

Updated Colorado River 4-Panel plot thru Water Year 2022 showing reservoirs, flows, temperatures and precipitation. All trends are in the wrong direction. Since original 2017 plot, conditions have deteriorated significantly. Brad Udall via Twitter: https://twitter.com/bradudall/status/1593316262041436160

6 #ColoradoRiver states submit a plan to cut #water use, but #California says ‘no deal’ — AZCentral.com #COriver #aridification

Colorado River “Beginnings”. Photo: Brent Gardner-Smith/Aspen Journalism

Click the link to read the article on the AZCentral.com website (Brandon Loomis). Click through for the photo gallery, here’s an excerpt:

Late last year, the federal government asked the seven states that share the Colorado River’s water to submit a plan by the end of January to rapidly cut their use of water or face mandatory cuts. Six of them found a consensus proposal andsubmitted their idea on Tuesday. The seventh — California — is an ominous exclusion, given that it is the largest water user on the river and could thwart efforts to preserve the system if it presses its rights in court. Even so, water policy experts found it encouraging that six states could come together to present the U.S. Bureau of Reclamation with a state-driven option, one that fast-forwards through a plan devised 15 years ago…One of the proposal’s authors, Southern Nevada Water Authority General Manager John Entsminger, said talks with California would continue.

ā€œWe absolutely intend to continue to work in good faith with California,ā€ he told The Arizona Republic. ā€œI don’t see the fact that that six states submitted a letter as any sort of declaration of failure.ā€

[…]

Reclamation officials have said river users must cut between 2 million and 4 million acre-feet to stabilize the system. Officials from the six states — Arizona, Colorado, Nevada, New Mexico, Utah and Wyoming — believe their plan will save 3.3 million. Each acre-foot contains about 326,000 gallons and is enough to supply two or three households, though roughly 80% of the river’s water is applied on farms…

Entsminger said the “no action” alternative is too risky in an age when a warming and drying climate has drained most of the reservoirs’ capacity.

“You’re just rolling the dice on an extremely high-percentage chance that these reservoirs are going to continue to decline and you could go below minimum-power pool at Lake Powell and dead pool at Lake Mead,” he said.

As the #ColoradoRiver dries up, [6 states and #California] can’t agree on saving #water — The Washington Post #COriver #aridification

Glen Canyon Dam, seen here in May 2022, was a major electrical generation but has produced less as volumes in Lake Powell have declined. Photo credit: Allen Best/Big Pivots

“This is what climate change + an out-dated law of the river looks like: ‘There’s a problem of aridification. But on top of that, there’s a problem with the rules…The rules governing the system are not sustainable.’ — Jonathan Overpack via Twitter

Click the link to read the article on The Washington Post website (Joshua Partlow). Here’s an excerpt:

The river’s biggest water user, California, didn’t join six states in a proposal to cut some 2 million acre feet of usage

For theĀ second timeĀ in six months, states that depend on theĀ Colorado RiverĀ to sustain their farms and cities appear to have failed to reach an agreement on restricting water usage, setting up the prospect that the federal government will make unilateral cuts this year…

ā€œObviously, it’s not going swimmingly,ā€ said Jeffrey Kightlinger, the former general manager of the Metropolitan Water District of Southern California, a water provider that is a major player in the talks. ā€œIt’s pretty tough right now.ā€

[…]

The proposal by the six states — Arizona, Colorado, Nevada, New Mexico, Utah and Wyoming — seeks to protect the major reservoirs in Lake Powell andĀ Lake MeadĀ from falling below critical levels, such as when the dams would no longer be able to generate electricity or at ā€œdead pool,ā€ when water would effectively be blocked from flowing out of these lakes. Before above-average snows in recent weeks, the Bureau of Reclamation was projecting thatĀ Lake PowellĀ could start to reach such thresholds by this summer.

One of the central tensions of these complicated negotiations is how to balance cuts between farming regions against those in cities, including major population centers. Agriculture uses some 80 percent of the river’s water and also tends to have the most senior rights, some dating back to the 19th century. The way this ā€œpriority systemā€ works, residents of Phoenix would lose water before vegetable farmers in Yuma. Those who grow alfalfa in Southern California’s Imperial and Coachella valleys would keep their water before people in parts of Los Angeles.

Kightlinger, along with many other water experts and officials, says cuts of this magnitude and severity have to be shared, rather than doled out according to seniority.

ā€œThey can’t follow the priority system. That would be a disaster. That would be: We’re basically going to put all the cuts on the major share of the economy. That just simply can’t be reality,ā€ he said.

Map credit: AGU

Six states agree on a proposal for #ColoradoRiver cutbacks, #California has a counter — KUNC #COriver #aridification

Horseshoe Bend, Arizona. Photo credit: Getches-Wilkinson Center

Click the link to read the article on the KUNC website (Alex Hager). Here’s an excerpt:

Six of the seven states that use water from the Colorado River have agreed on a proposal to leave more water in Lake Mead, the nation’s largest reservoir. California, which has the largest and oldest water rights in the region, was the lone holdout. The proposal was sent to the Bureau of Reclamation as the federal agencyĀ considers adjustingĀ the amount of water released from Lake Mead and Lake Powell each year…

ā€œI think the fact that six states are willing to issue this letter without California being on board shows the gravity of the situation for them,ā€ said Sarah Porter, director of the Kyl Center for Water Policy at Arizona State University. ā€œI’m sure they all would have preferred to have California be a cosigner of this, and it just shows how seriously they’re all taking this.ā€

The six-state proposal, branded as the ā€œConsensus-Based Modeling Alternativeā€ would add about 1.5 million acre-feet to Lake Mead in each of the next two years. That’s roughly the same amount of water that is lost each year due to evaporation and inefficient infrastructure. The plan attempts to correct an accounting problem. Each year, some water users in Nevada, Arizona and California are legally entitled to water in Lake Mead that does not physically exist, because it evaporates off of the reservoir’s surface before it ever has a chance to flow downstream. The total amount of evaporated water varies each year depending on reservoir levels and weather. Accounting for that quantity of lost water could get the basin’s users closer to the needed conservation to slow the decline of water levels at Lake Mead. Without changes, federal scientists say the reservoir will continue dropping towards ā€œminimum power pool,ā€ the level at whichĀ hydropower generationĀ within the Hoover Dam becomes impossible, and ā€œdeadpool,ā€ the level at which water is too low to flow through the dam at all…

California released details of its own proposal to Reclamation late Tuesday. The state suggested the adoption of aĀ water-saving planĀ it first outlined last October. Under that plan, the state would voluntarily cut back on its water use from the Colorado River use by 400,000 acre-feet – about 9% of its total annual use – each year until 2026. In a press release, the state’s Colorado River board wrote that its proposal would reduce water use while ā€œprotecting infrastructure, prioritizing public health and safety, and upholding the existing body of laws, compacts, decrees, and agreements that govern Colorado River operations.ā€ California’s proposal emphasizes the state’s desire to follow existing legal structures for river management, and says further steps could be taken if water levels at Lake Mead dip below 1,000 feet above sea level.

Colorado River Basin Plumbing. Credit: Lester DorƩ/Mary Moran via Dustin Mulvaney and Twitter