The low level of the water line is shown on the banks of the Colorado River at the Hoover Dam in Hoover Dam, Arizona, May 31, 2018.
The low level of the water line is shown on the banks of the Colorado River at the Hoover Dam in Hoover Dam, Arizona, May 31, 2018.

Two states in the U.S. West have work to do on a plan to combat the shrinking supply of Colorado River water that 40 million people depend on but that’s threatened by a prolonged drought, a federal official said Friday.

Complex agreements among water users in California and Arizona haven’t been signed, U.S. Bureau of Reclamation Commissioner Brenda Burman said. The states missed her Thursday deadline to complete the work, which could allow the federal government to step in and decide the rules.

But Burman said she prefers the seven states that rely on the river to reach a consensus on protecting the water that serves 5.5 million acres of farmland. She said she would halt a process to ask those governors to explain what should happen next if California and Arizona finish all the components of a drought plan by March 4.

“We are close, and I applaud those who have worked to get us close, but only done will protect this basin,” she told reporters Friday. “Time to get the job done.”

FILE - What was once a marina sits high and dry be
FILE - What was once a marina sits high and dry because of the receding water in the Lake Mead National Recreation Area in Arizona, July 16, 2014.

?Drought plans

The bureau is part of the Interior Department, which has broad authority to manage water supplies in the Colorado River’s lower basin, which includes Arizona, California and Nevada.

Utah, New Mexico, Colorado and Wyoming make up the river’s upper basin and have approved the drought contingency plans, as has Nevada.

Arizona lawmakers passed legislation late Thursday supporting the drought plan, and Gov. Doug Ducey signed it. Arizona was the only state that required lawmakers to review the plan. Now, water users must sign 15 agreements that address water storage, conservation and other details.

Ducey’s office said it considers that step a formality. A committee tasked with negotiating Arizona’s drought plan included nearly 40 people representing tribes, cities, developers, farmers and other water managers.

“We have no reason to believe any member of the steering committee, stakeholder in the process would do anything but fulfill their commitment,” the governor’s chief of staff, Gretchen Conger, said.

Reservoirs running low

The river has two main reservoirs — Lake Mead on the Arizona-Nevada border and Lake Powell upstream — that gauge its health. Their combined storage is at the lowest level since the early 1960s, Burman said. She and others have painted a dire picture, saying that without action, Lake Mead could fall to a level referred to as “dead pool” and none of the lower basin states would get any Colorado River water.

Guidelines now cut water deliveries to Arizona and Nevada when Lake Mead falls to 1,075 feet (328 meters), and it’s a real possibility next year. Farmers in central Arizona would suffer the most, and Nevada would take a hit. California would not lose any water because it has senior rights to the water.

The drought plan seeks to spread the cuts more widely and eventually loop in California. Mexico also has agreed to cutbacks. The plan advocates for keeping more water in Lake Mead to keep it from falling drastically.

“We wanted to be proactive, have a plan,” said Jeff Kightlinger, general manager of the Metropolitan Water District in California. “We have to step up and work with Arizona. The big, important thing is with the climate change and long-term drought cycle of the American Southwest, people have realized this isn’t about priorities, it’s about survival.”

He was confident Arizona and California would do what’s needed to complete the drought plan by March 4.

FILE - Agricultural farm land is shown near the Sa
FILE - Agricultural farm land is shown near the Salton Sea and the town of Calipatria, Calif., May 31, 2015.

?Salton Sea

In California, the work was up to four entities that deliver Colorado River water — the Metropolitan and Coachella Valley water districts, and the Imperial and Palo Verde irrigation districts.

The Imperial Irrigation District has said its approval is contingent on final review of the multistate plan, federal legislation and getting $200 million to manage the Salton Sea. Levels in the state’s largest lake created by runoff have exposed a dusty lakebed that worsens air quality when winds sweep into nearby communities.

The district will work to reach a deal, and its board will vote when everything is complete, general manager Henry Martinez said.

The upper basin states manage their share of the river differently than the lower basin. They work to keep Lake Powell at a minimum 3,490 feet (1,064 meters) above sea level, providing water to the lower basin states and ensuring hydroelectric turbines at Glen Canyon Dam keep spinning.

James Eklund, Colorado’s representative on interstate river negotiations, said he wasn’t surprised or discouraged by Burman’s actions.

“You’ve got to stick with deadlines or sometimes people won’t take you seriously. She wasn’t draconian about it,” Eklund said.