The U.S. government has finalized a 10-year plan to reduce water allocations from the drought-stricken Colorado River for California, Arizona, and Nevada by 21% in 2027 and 2028, with potential deeper cuts in subsequent years.
The Interior Department announced the decision on Friday, following a proposal from the three states to collectively cut 3.2 million acre-feet of water over the next two years. The reductions include 1.25 million acre-feet per year in mandatory cuts and an additional 700,000 acre-feet in voluntary conservation efforts by the states.
Key Details of the Plan
- Mandatory cuts: The three states will face a 21% reduction in their Colorado River water supply in 2027 and 2028, totaling 1.25 million acre-feet annually.
- Voluntary conservation: The states have agreed to conserve an additional 700,000 acre-feet over the two-year period.
- Future escalation: If reservoir levels remain critically low, mandatory cuts could nearly double to 3 million acre-feet per year starting in 2029.
- No mandatory cuts for upper basin states: Colorado, Utah, New Mexico, and Wyoming are not subject to mandatory reductions under the plan.
State Reactions and Concerns
Officials from Arizona and Nevada have warned that doubling the cuts after 2028 could devastate their economies, with Arizona threatening legal action if the federal government imposes the deeper reductions. JB Hamby, California’s Colorado River Commissioner, described the plan as “a bridge, not a permanent solution.”
The Colorado River supplies water to one in 10 Americans, irrigates land producing 15% of U.S. food output, and generates power for 6 million people across seven states. The river’s two largest reservoirs, Lake Mead and Lake Powell, have reached record-low levels due to a 26-year drought in the U.S. West.
Federal Rationale and Long-Term Implications
The Interior Department framed the plan as a necessary measure to prevent reservoir levels from falling further, emphasizing the need for regional cooperation. Andrea Travnicek, the department’s assistant secretary for water and science, noted that climate change-driven drought conditions are expected to persist, making sustained conservation efforts critical.
The plan allows for up to 40% reductions in combined water allotments if reservoir levels continue to decline. While the announcement did not explicitly mention climate change, scientific research links prolonged drought conditions to global warming caused by fossil fuel emissions.
Background: Failed Negotiations and Regional Tensions
Negotiations among the seven Colorado River Basin states have stalled for years, with upper basin states resisting mandatory cuts due to their own vulnerability to drought. The lower basin states, which rely more heavily on the river, have argued that automatic cuts should be triggered to stabilize supply.
The finalized plan follows a May 1 proposal from the lower basin states, which the federal government has now codified into policy. However, the potential for legal challenges could prolong uncertainty over water management in the region.