Feds mandate Colorado River usage cuts in three SW states
TL/DR –
The U.S. Department of the Interior’s Bureau of Reclamation has issued a decision requiring California, Arizona, and Nevada to collectively reduce their annual water usage from the Colorado River by 1.25 million acre feet in the next two years due to drought conditions causing the river’s two major reservoirs to reach record lows. The decision came after years of unsuccessful negotiations between the three downstream states and the upstream states (Colorado, Utah, Wyoming, and New Mexico) and will see California reduce its water usage by 12%, and Nevada and Arizona making larger reductions of 28% and 31% respectively. The federal government will provide $350 million for water conservation efforts in the lower states and $100 million for the upper states, with efforts underway to negotiate with Mexico, as the river no longer reaches the sea due to excessive water diversion by U.S. states.
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US Government Mandates Significant Water Use Reductions for Three States
In the face of an ongoing 26-year drought that has left the Colorado River’s two major reservoirs at historically low levels, the U.S. Department of the Interior’s Bureau of Reclamation has instructed California, Arizona, and Nevada to collectively cut their annual water usage from the river by 1.25 million acre feet over the next two years. The record of decision warns of potentially more severe cuts in the future.
State-by-State Reductions
Under this mandate, California must reduce its Colorado River water usage by approximately 12%, while Nevada and Arizona face larger cuts of 28% and 31% respectively.
The Colorado River is a vital resource, supplying drinking water for over 40 million people across seven US states and two Mexican states, 30 tribal nations, and close to 5.5 million acres of farmland, while also generating substantial hydropower.
Years of Unsuccessful Negotiations Lead to Federal Intervention
This federal intervention follows years of unsuccessful negotiations among the downstream states (California, Arizona, and Nevada) and upstream states (Colorado, Utah, Wyoming, and New Mexico). The original agreement under the 1922 Colorado River Compact failed to foresee the current scarcity issue that leaves the river unable to fulfill the compact’s allocations.
While there are currently no mandatory cuts for the four upstream states, the federal government has pledged $350 million for water conservation efforts in the lower states and $100 million for the upper states. This funding, part of the Biden administration’s Inflation Reduction Act, will be used to pay agencies to keep water in Lake Mead and incentivize farmers to leave fields dry, according to the Los Angeles Times. Additionally, there are ongoing efforts to negotiate with Mexico regarding water use.
Water Levels Reach Critical Lows
The water scarcity in Lake Mead and Lake Powell is severe, with both reservoirs carrying just 27% and 22% of their capacities respectively. A record-low snowfall in the Rockies this past winter and climate change-induced warmer, drier conditions have amplified the crisis. If water levels continue to drop, the Hoover and Glenn Canyon dams may be forced to halt electricity generation and restrict water flow downstream.
California Governor Gavin Newsom, who often disagrees with the Trump administration, praised this decision, stating, “the federal plan is necessary to protect the river.” However, he maintained that a long-term resolution requires “responsibility fairly across all seven states.”
San Diego’s Preemptive Measures
San Diego has prepared for such a situation by investing in projects like the Pure-Flo water reclamation plant, which recycles water for drinking, desalination, and increasing water storage capacity. This includes deepening the San Vicente Reservoir, home to the nation’s largest dam raise.
Dan Denham, the General Manager of San Diego County Water Authority, declared the Colorado River’s future critical for the entire Southwest. He pressed for the continued management of this shared resource as climate pressures increase, and assured that the Water Authority has built one of the nation’s most resilient and diversified water portfolios.
For further information, visit Reclamation’s Future Colorado River Operations webpage.
Additional sources can be found at Las Vegas Sun News and Los Angeles Times.
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