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[INTERNATIONAL] · United States, Mexico · 41 sources

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Colorado River water cuts finalized for Arizona, California, and Nevada

The U.S. Department of the Interior has finalized a new operating framework to address the severe drought in the Colorado River Basin. The plan mandates significant water reductions for the three Lower Basin states—Arizona, California, and Nevada—to protect critical reservoirs Lake Mead and Lake Powell, which have reached historic lows.

Starting in the 2027-2028 period, the three states will collectively reduce their annual Colorado River usage by 1.25 million acre-feet each year. Arizona faces the largest reduction at 760,000 acre-feet, followed by California with 440,000 acre-feet, and Nevada with 50,000 acre-feet. Additionally, the states have committed to voluntary conservation efforts totaling at least 700,000 acre-feet over the next two years.

Under a bilateral treaty, Mexico will also reduce its water intake by 250,000 acre-feet. While the Upper Basin states—Colorado, Utah, Wyoming, and New Mexico—are not subject to mandatory cuts under this specific framework, officials emphasize the need for long-term, basin-wide cooperation as the region faces a prolonged 26-year drought and declining snowpack levels.

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Bureau of Reclamation · Colorado River · Lake Mead · Lake Powell · U.S. Department of the Interior

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