Showing posts with label water shortages. Show all posts
Showing posts with label water shortages. Show all posts

February 1, 2019

Feds start process to manage Colorado River after states miss drought plan deadline

A view of Hoover Dam is seen from the Mike O'Callaghan-Pat Tillman Memorial Bridge on Wednesday, Aug. 28, 2018. (Jeff Scheid/The Nevada Independent)

By Daniel Rothberg
The Nevada Independent


Citing increasing risks of shortages on the Colorado River, federal water managers said they are starting a process to protect the overused and drought-stricken watershed, after the seven states that use the river missed a deadline Thursday to complete a drought plan.

On Friday morning, the U.S. Bureau of Reclamation, a federal agency that manages waterways and dams across the West, submitted a formal notice asking each Colorado River Basin state to submit comments about how to manage the river in lieu of a drought plan. In December, Reclamation Commissioner Brenda Burman told the states that the states had until Jan. 31 to finish negotiating a drought deal that has been in the works for about three years.

“While we are getting closer, we are still not done,” Burman said on a call with reporters.

Despite Friday’s action, Burman said the agency’s preferred approach would be to implement the drought plan, which is nearly complete. If a plan is approved before March 4, when states start submitting comments, Burman said the agency would rescind its action. But if Arizona and California, the two states that have not finished the plan, cannot come to an agreement before then, Burman vowed to move down a path giving her broad authority to manage the river.

Such an action, Burman said, was not the agency’s “preferred approach.”

“However, any further delay elevates existing risk for the basin to unacceptable levels,” Burman told reporters. “The basin is teetering on the brink of shortage and there is a potential for Lake Powell and Lake Mead to decline to critically low elevations in the very near future.”

For years, the basin states — Arizona, California, Colorado, Nevada, Utah and Wyoming — have been working on a deal to cut usage amid a nearly two-decade drought. Lower average streamflows have intensified overuse on the Colorado River, a watershed that stretches from Wyoming to Mexico and supports more than 40 million people in the Southwest. As a result, the elevation of the river’s main reservoirs, Lake Mead and Lake Powell, dropped to historic lows.

Five states, including Nevada, have signed off on the deal, known as the Drought Contingency Plan (DCP). Several Southern California irrigation districts have yet to review and sign off on the final plan. For more than a year, the biggest roadblock to finishing the drought plan was in Central Arizona, a region that could be required to cut nearly half of its Colorado River supply under the plan. Those cuts, which will hit agricultural producers the hardest, had been the subject of intense negotiations between farmers, tribes and cities, as irrigation districts pushed for mitigation water.

But on Thursday, Arizona lawmakers reached an agreement passing legislation that allowed the drought plan to move forward. Burman called the development a “tremendous step forward” and said it was a signal that Arizona’s approval of the drought plan could be “imminent.” Still, Burman said she issued the notice because the final contracts were still not in place.

“We appreciate the acknowledgment of Arizona’s accomplishment and look forward to all parties across the basin to work together to complete the DCP process by the commissioner’s March 4 deadline,” said Crystal Thompson, a spokesperson for the Central Arizona Project, which controls a 336-mile canal that delivers Colorado River water from Lake Havasu to Tucson.

Nevada, through the Southern Nevada Water Authority, became the first state to approve the drought plan in November. Because the water authority is using less water than it is allowed to use under the Colorado River Compact allocation, it would be able to sustain cuts to its supply.

Colby Pellegrino, the water authority’s Colorado River manager, said the water authority is “pretty optimistic” that “we will have that seven-state consensus within the next few weeks.”

Intervention from the federal government would be a significant departure from the state-driven approach that has characterized Colorado River management. When it comes to the Colorado River, the agency has traditionally allowed the states to craft collaborative rules for how it should manage its complex rulebook for operating dams and processing water deliveries.

Burman did not elaborate on what a possible action would look like and noted that she had legal authority to take necessary action under Arizona v. California, a 1963 Supreme Court case. But Burman said that the best approach would be for the states to approve a collaborative plan.

“It’s better to have consensus,” she said. “These are questions that a lot of people don’t want to answer. It’s better to have consensus on the river than exploring a lot of legal hypotheticals.”

Long before Burman threatened federal action in December, the states have sought to avoid that outcome. Many water managers believe that handing over more control to the federal government would take away the certainty and predictability they have in making decisions.

“Certainty to us is being able to predict the quantity and timing of shortages,” Pellegrino said.

That certainty, Pellegrino said, allows the water authority to plan for shortages, create accurate modeling and conduct risk assessments. Under current streamflow forecasts, the Bureau of Reclamation is expected to issue its first shortage declaration for Lake Mead at the start of 2020.

August 16, 2018

As Colorado River Basin reservoirs drop to near-record low levels, possibility of unprecedented water shortage declaration rises

Climate shift to hotter, drier conditions worsening current water crunch

Colorado River Basin

By BRUCE FINLEY
The Denver Post


The Colorado River is so strained amid population growth and a climate shift to hotter, drier conditions that federal water managers may declare an unprecedented “shortage” and cut releases from reservoirs.

The feds are imploring Western states to do more now to cut water use.

A U.S. Bureau of Reclamation forecast issued Wednesday for water in the Colorado River — an over-subscribed lifeline for 40 million people — anticipates declaration of a shortage in September 2019 that would trigger the reduced water releases from federal reservoirs in “lower basin” states including Nevada and Arizona.

Colorado and other “upper basin” states Utah, Wyoming and New Mexico would face increased scrutiny of flows from headwaters into the Lake Powell reservoir. On Wednesday, Lake Powell measured 49 percent full and Lake Mead measured 38 percent full.

“Water stored in Lake Mead and Lake Powell has blunted the impacts of the ongoing drought and helped ensure consistent, reliable water and power,” said Brent Rhees, the bureau’s regional director for the upper basin. “We must continue to work to protect water in the basin. Completing drought contingency plans this year will provide better certainty. …. We can’t afford to wait for a crisis.”

Colorado Water Conservation Board Director Rebecca Mitchell said “there’s no doubt” managing the river presents challenges. “Realistic predictions on the Colorado River are for increasing demand and decreasing supply,” Mitchell said.

Declaration of a water shortage along the Colorado River would be unprecedented. Federal officials are committed to waiting until the water level in Lake Mead drops below the elevation of 1,075 feet above sea level. Then they’d cut deliveries, first targeting Arizona, Nevada and Mexico.

The water level on Wednesday: 1,078 feet.

“We’re within three feet. We’re not going to declare a shortage in 2019,” agency spokesman Marlon Duke said. “There’s a 52-percent chance we will have to declare a shortage in 2020. … We cannot just sit back and think the river is going to provide all the water we need, especially as our cities continue to grow. It all depends on what Mother Nature sends us next year.”

Beyond the booming Western cities that rely on Colorado River water, including Denver, Phoenix and Las Vegas, strains on the river have food supply implications affecting salad bars as far away as New York and Washington, D.C. Colorado River water irrigates 15 percent of the nation’s vegetables, nuts and fruits.

For nearly a century, Western states have shared the river water under a treaty that divvies up portions and specifies the amounts states must leave in the river to maintain healthy major reservoirs. The problem is that population growth and agriculture has been withdrawing more water each year than the river supplies. And climate conditions, far drier than the relatively wet period that was the basis for the treaty, hasten the draw-down of reservoirs meant to serve as savings accounts.

“We see this train coming, and we’re trying to get ready for it,” said James Eklund, Upper Colorado River Basin commissioner for Colorado, who negotiates river matters with commissioners from the other states, including California.

“Right now we’re OK. If they declare a shortage in the lower basin, it is going to pull more water out of Lake Powell. That would mean we are going to have to put more water into it,” Eklund said.

“The ‘shortage’ is like a yellow traffic signal that says, ‘Hey. Watch out. You’ve gotta be mindful of demands exceeding supply to such a degree that our system doesn’t work.'”

U.S. Bureau of Reclamation Commissioner Brenda Burman has warned states they must act. Burman demanded “drought contingency plans” by the end of the year. The publication of the Colorado River forecast covering the next two years is expected to spur planning, if not immediate smarter use of water.

Federal government scientists have concluded that climate change is creating conditions in the Colorado River Basin that are more variable with more extreme precipitation and more extreme drought. Scientists say precipitation increasingly will come from rain, rather than snow, as temperatures increase. The reservoirs constructed along the river have become increasingly important in easing the impact during a dry period that began 18 years ago and ranks among the driest periods in 1,200 years.

The forecast says river flows into Lake Powell from Colorado and other upper basin states, from snowpack, probably won’t exceed 75 percent of average next year. It says 8.23 million acre-feet of water will flow from Lake Powell to Lake Mead in 2019. That’s more than the amount expected to flow into Lake Powell.

Colorado, Wyoming and Utah depend heavily on mountain snowpack and have been delivering water to Lake Powell as required under the Colorado River Compact. The efforts in these states to develop a plan for conservation should a shortage be declared reflects a common interest of states in managing the river cooperatively — avoiding a federal intervention to control flows into and out of reservoirs.

That plan will be done by the end of the year, Eklund said.

“We in the upper basin face water shortages every year because the nation’s two largest reservoirs sit below, not above, us. We have to work with whatever falls from the heavens. Anytime we have to administer water under our priority system, someone in the upper basin is taking a shortage. That happens every year,” he said.

“We have ways to use less water. We fallow fields. We take water out of pipelines. We conserve. But we have less snow to work with than in the past and more people than ever reliant on the Colorado River system,” Eklund said.

“In a system that supports 40 million people in seven states, tribes, and Mexico, a unique environment, and several billion dollars of economic output, this challenge requires contingency planning in both the lower basin and the upper basin,” he said.

“These contingency plans will have to be implemented.”

Water advocacy groups embraced the forecast as evidence the West’s water challenges are reaching a critical point.

People in the seven southwestern states “must learn to live with less water,” said Kim Mitchell of the Boulder-based Western Resource Advocates. “Unless we take decisive, proactive steps now, major water users, farmers, cities, businesses, and the environment all will lose water. … Leaders at all levels throughout the basin must understand that more water is being pulled out of the Colorado River than is being replaced and the problem is compounded by a long-term drought and climate change.”

May 10, 2016

The Drought Goes On: As Lake Mead Sinks, States Agree to More Drastic Water Cuts

Lake Mead, the West's largest reservoir, is dropping at a rapid rate.

Written by Sarah Tory
Coachella Valley Independent


Three years ago, state hydrologists in the Colorado River Basin began to do some modeling to see what the future of Lake Mead—the West’s largest reservoir—might look like. If the dry conditions continued, hydrologists believed, elevations in Lake Mead—which is fed by the Colorado River—could drop much faster than previous models predicted.

For decades, the West’s big reservoirs were like a security blanket, says Anne Castle, the former assistant secretary for water and science at the Interior Department. But the blanket is wearing thin. Under normal conditions, Lake Mead loses 1.2 million acre-feet of water every year to evaporation and deliveries to the Lower Basin states plus Mexico; that all amounts to a 12-foot drop. Previously, extra deliveries of water from Lake Powell offset that deficit, but after 16 years of drought and increased water use in the Upper Basin, those extra deliveries are no longer a safe bet.

“There’s a growing recognition that even these huge reservoirs aren’t sufficient to keep the water supply sustainable anymore,” says Castle.

For the three Lower Basin states—California, Arizona and Nevada—that rely heavily on Lake Mead, the situation is particularly urgent. For the last several years, Mead has hovered around 1,075 feet above sea level, the point at which harsh water-rationing measures kicks in. And if conditions in the reservoir continue to worsen, the Interior Department could even take control of water allocation from Lake Mead.

So with the threat of a federal takeover looming, water policy leaders in the Lower Basin states, along with the Bureau of Reclamation, the reservoir’s operator, began meeting last summer to discuss ways they can jointly boost water levels in Lake Mead. Some of the details are now available and indicate that all three states are now willing to accept additional water cuts from the reservoir on top of the cuts that they previously agreed to make in 2007.

Those measures follow a set of federal guidelines adopted nine years ago to manage water deliveries from Lake Mead, given the likelihood of future shortages. The guidelines established a series of thresholds for the reservoir’s water levels that would trigger increasingly severe cutbacks for the Lower Basin states. At the time they were negotiated, few people anticipated that the drought would last as long as it has, but as Lake Mead inched closer to the critical 1,075 mark, water managers in the Lower Basin realized the existing guidelines were not enough to prevent an eventual shortage.

While the terms of the new agreement between California, Arizona and Nevada are still being negotiated, a few details have emerged. For starters, the Bureau of Reclamation has pledged to cut 100,000 acre-feet annually through efficiency measures such as lining irrigation canals to prevent seepage, or possibly by re-opening the long-shuttered Yuma Desalting Plant.

The three states’ willingness to collectively ration their water use would have been unthinkable just a few decades ago, when states fought each other in court to win as much water from the Colorado River. The cooperation is a nod to how new climate realities are re-shaping old water politics in the West. Take California, for instance. Legally, the state could hold on to every drop until Lake Mead is nearly down to mud, since the 1968 law that authorized the Central Arizona Project’s construction gave California the highest priority water rights to the Colorado River. But at that point, says Castle, they’re just as impacted as everyone else.

Other collaborative agreements to reduce the strain on the Colorado River include a 2014 Memorandum of Understanding between the big water providers in the Lower Basin states, the Bureau of Reclamation and the Central Arizona Project, pledging “best efforts” to conserve 40,000 acre feet in Lake Mead. In 2014, major municipal water providers in Arizona, California, Nevada and Colorado also agreed to fund new water conservation projects through a pilot initiative called the Colorado River System Conservation program.

For the Lower Basin especially, the negotiations are necessary to avoid the potential federal takeover, says Tom Buschatzke, the director of the Arizona Department of Water Resources. Although the secretary of the interior, Sally Jewell, has not voiced any immediate plans to that effect, in the past, she has made public statements on the matter.

For Buschatzke, the threat is clear: “She’ll take action if we don’t collaborate,” he says.

Here are the cuts states could face:

Arizona would lose 512,000 acre-feet of its total 2.8 million acre-feet per year allotment if Lake Mead dips below the 1,075 feet threshold. That’s 192,000 acre-feet more than the 320,000 acre-feet it had previously agreed to cut under the 2007 guidelines. Further cuts occur if the reservoir continues to drop. In another unprecedented move, Arizona water officials are talking about trying to spread cuts across all sectors of the state’s economy that rely on CAP water for drinking and irrigation—cities, farms, industries, Indian tribes and others—instead of letting only farmers take the brunt of the cuts, as dictated by their junior water rights.

California: Thanks to the 1968 law that authorized CAP’s construction, California’s 4.4 million acre feet allotment is shielded from most of the cuts should a shortage on Lake Mead be declared. But as part of the new negotiations, the state has volunteered to cut its water use from Lake Mead by 200,000 acre feet if the reservoir’s levels fall below 1,045 feet, and up to 350,000 acre-feet if levels sink to 1,030 feet.

Nevada: The state with the smallest allotment of Colorado River water, Nevada would take a much smaller share of the cuts—8,000 acre-feet if Mead drops below 1,045 feet, and 10,000 acre-feet after that—because it has the rights to only 300,000 acre-feet.

According to Buschatzke, the three states anticipate finalizing the agreement by early this fall, at which point negotiators will begin working the new measures into law. Those changes in law will likely not happen before 2017.

For Castle, the discussions are part of a new era in water politics—one that looks increasingly collaborative.

“We haven’t seen states versus state or state versus feds for a long time,” she says. “There’s a recognition that litigation is failure—that we need to come together and make things work.”

Sarah Tory is a correspondent for High Country News, where this story originally appeared.