Colorado River Plan Mandates 20 Percent Water Cuts for Three States

Federal officials have finalized a two-year operating framework that mandates significant water reductions across the American Southwest. Under the plan, Arizona, California, and Nevada will curb their use of water from the Colorado River by a combined 20 percent through 2028, according to reports from the Washington Post. The directive arrives as the river system confronts a decades-long drought exacerbated by climate change, pushing combined storage in Lake Mead and Lake Powell to its lowest point since 1957.

The temporary rules managed under agreements from 2007 and 2019 are set to expire in October. The U.S. Bureau of Reclamation’s final environmental impact statement adopts a proposal put forward by the Lower Basin states in May, requiring a total reduction of 3.2 million acre-feet across the three states through 2028, the Nevada Independent noted.

State-by-State Breakdown of Mandatory Reductions

The burden of the new cuts falls unevenly across the Lower Basin, reflecting each state’s distinct baseline allocation and historical usage patterns. California remains the largest consumer on the river, holding an annual allocation of 4.4 million acre-feet, while Arizona holds 2.8 million acre-feet and Nevada maintains 300,000 acre-feet, AOL reported.

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State	Allocation Baseline	Required Reduction
California	4.4 million acre-feet	About 12%
Arizona	2.8 million acre-feet	About 31%
Nevada	300,000 acre-feet	About 28% (84,000 acre-feet)

The reductions represent a stark reality for Arizona’s most populated regions.

Nevada Prepares for Stiff Pressure Despite Decades of Conservation

Nevada is slated to give up more than a quarter of its allocated supply, amounting to 84,000 acre-feet over the next two years. Because the Southern Nevada Water Authority recycles the vast majority of its water and returns it to Lake Mead for credit, the state actually used only about 212,000 acre-feet of its official share in 2024, according to state reporting.

Bronson Mack, a Southern Nevada Water Authority spokesman, previously discussed the community’s conservation efforts via KLAS.

Local advocates suggest residents will feel the impact primarily as heightened administrative pressure rather than immediate taps running dry. Kyle Roerink, a senior adviser with the Great Basin Water Network, noted that local systems have anticipated these restrictions for years.

“The cut is the type of thing that we can endure quite well,” said Kyle Roerink, a senior adviser with the Great Basin Water Network, a Nevada based water advocacy and conservation group. “It’s what SNWA has been preparing for, what the Legislature has been preparing for. It’s not really something that is going to upend the status quo in the immediate future.”

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Kyle Roerink, senior adviser with the Great Basin Water Network

Federal Funding and the Threat of Deeper Future Cuts

While the Trump administration is adopting the states’ near-term proposal, it rejected other elements, such as a demand for guaranteed extra water releases from Upper Basin reservoirs like Flaming Gorge. U.S. Interior Secretary Doug Burgum met with governors of the seven basin states to outline the framework, which establishes baseline rules for how cuts scale with reservoir levels, the Los Angeles Times reported.

Yet experts warn that the current federal strategy may fall short of long-term stabilization. The 10-year framework permits much larger cutbacks—potentially reaching up to 40 percent of the Lower Basin’s combined allocations—if reservoir levels continue to drop past 2028.