Phoenix is planning to dip into its emergency water bank as a result.
Posted by Leslie Eastman
Federal officials are ordering the West to live within the limits of a Colorado River system drained by decades of over-allocation, drought, and policy delay.
California, Nevada, and Arizona allocations will be cut a combined 1.25 million acre-feet annually for the next two years, while the upstream states evade mandatory reductions for now.
Arizona will see the biggest cuts, while states upstream — Colorado, Utah, Wyoming and New Mexico — do not face any for now.
Meanwhile neighboring Mexico will reduce its intake by 250,000 acre-feet (about 310 million cubic meters) under a U.S.-Mexico treaty.
“We’ve been in this 26-year prolonged drought period,” said Andrea Travnicek, the Interior Department’s assistant secretary for water and science. “We continue to see a prolonged drought in our future. So continuing to work together as a whole within the basin is going to be extremely important.”
The current rules governing the use of the river’s water are set to expire in October, and the seven states have been unable to reach a consensus on sharing it over the long term.
Arizona will see the largest cuts, with annual water deliveries reduced by 31%. As a result, the city of Phoenix is planning to dip into its emergency water bank.
Arizona’s large cut results from agreements and court fights over water rights more than 100 years ago.
The result was that Arizona got the lowest priority for Colorado water in times of shortages, and California the highest priority. That’s what the state is living with today.
The City of Phoenix has been preparing for this day.
The city’s plan starts with dipping into an emergency water bank for the first time since its creation more than 35 years ago.
The cuts could significantly affect Nevada, which has been enjoying robust real estate development as Californians flee the Golden State.
In Southern Nevada, Kyle Roerink, senior adviser at the conservation group Great Basin Water Network, said efforts to build a new airport and shopping malls and some public land sales have not progressed, reflecting the dire hydrology inked in the federal documents. Further cuts could slow real estate development in metro Las Vegas, he said.
River water levels are so low that hydropower plants may no longer generate power.
The river’s health often is determined by how much water is in Lake Mead and Lake Powell, the two largest human-made reservoirs in the U.S. Together, the reservoirs are at their lowest point since they began filling, according to a recent paper by Colorado River experts, and approaching levels where they could no longer produce hydropower.
Hoover Dam could lose the ability to generate hydropower if Lake Mead falls below its minimum power pool, reported as roughly 950 feet above sea level. At lower elevations, there is not enough usable water intake to operate the turbines.
It gives a whole new meaning to “Deadpool“.
The minimum level to generate power is 950 feet, and if the level drops to 895 feet, then that’s the dreaded Deadpool.
Deadpool is the point when water can no longer flow downstream from the dam, and if that happens, then the system as we know it fails.
Lake Mead’s reported water-surface elevation is 1,039 feet above sea level, about 190 feet below full pool and approximately 27% full.
Even though this plan is final, the threat of litigation looms.
Tribes, states or other groups are now able to sue Reclamation over its final plan, and could argue that the agency erred in how it conducted its environmental review.
Some tribes, like the Gila River Indian Community (GRIC) in Arizona, have indicated that drastic federal water cuts could force a lawsuit. Many tribes in the basin also have water rights on paper that have never been fully realized.
GRIC Gov. Stephen Roe Lewis said that while litigation is certainly not the community’s first choice, it is an option.
“The community … will not hesitate to turn to the courts to protect our interests and our future,” he said at a CU-Boulder water conference in June.
Perhaps the anticipated historic El Niño will bring the Southwest the rain and mountain snowpack needed to offer the Colorado River system some breathing room.
But precipitation alone will not solve a crisis worsened by decades of over-allocation, political procrastination, and an aversion to building the reservoirs, recharge projects, and other infrastructure needed to capture water when it actually arrives.
The real test will be whether Western leaders can move beyond emergency rationing and litigation long enough to prepare for both the next wet cycle and the inevitable dry one.
Finally, and as a much needed reminder, severe droughts have occurred periodically in this region of the US….long before Henry Ford invented the car.
