Washington is now literally paying Southern California to leave some of its Colorado River water sitting in Lake Mead instead of piping it home.
On July 14 the Metropolitan Water District's board signed off on a deal that lets the federal government pay to keep up to 200,000 acre-feet of its Colorado River supply stored in the shrinking reservoir this year. Officials say the short-term move is meant to slow Lake Mead's slide toward dangerously low elevations and to protect both drinking water for Southern California and hydroelectric generation at Hoover Dam.
How the federal buy-in works
Under the agreement, the U.S. Bureau of Reclamation will pay Metropolitan about $325 per acre-foot, up to $65 million total, to leave those supplies in Lake Mead instead of diverting them for deliveries, as reported by Business Wire. The money comes from the Inflation Reduction Act's Lower Colorado River Basin System Conservation and Efficiency Program and is aimed at buying short-term "wet water" that physically remains in the reservoir.
Additional agreements and limits
The board also approved related agreements that allow Reclamation to pay for up to 19,000 acre-feet of conserved agricultural water to be added to Lake Mead each year in 2027 and 2028 through separate deals with the Quechan Tribe and the Bard Water District. Metropolitan leaders stressed that these arrangements are temporary tools, not a cure-all, and urged the seven Colorado River Basin states to hammer out post-2026 operating rules for the system, according to the Los Angeles Daily News.
Why the federal program exists
Record-low mountain snowpack and well-below-normal runoff this year have helped push Lake Mead toward near historic lows, according to the Natural Resources Conservation Service (NRCS). In response, the Bureau of Reclamation created the Lower Colorado River Basin System Conservation and Efficiency Program under the Inflation Reduction Act to fund voluntary conservation actions that keep water in major reservoirs and protect both deliveries and power production (Bureau of Reclamation).
What it means for customers
Metropolitan supplies water to about 19 million people in Southern California, and a single acre-foot holds about 326,000 gallons, roughly enough water for three households. Keeping more of that supply parked in Mead is meant to buffer urban deliveries and the region's power supply.
Metropolitan officials say the move could help avert a severe hit to Hoover Dam's output. They estimate hydropower capacity could drop by as much as 70 percent if Lake Mead falls much further. At the same time, they emphasize that these federally funded deals are stopgaps and cannot substitute for long-term, basinwide operating agreements (Metropolitan Water District).
What's next for the river
The current interim operating guidelines that govern Lakes Powell and Mead expire at the end of 2026. The Bureau of Reclamation is working through a Supplemental Environmental Impact Statement and multi party negotiations to shape a post-2026 framework that is supposed to reduce the need for repeated emergency water buys. Metropolitan says the new agreements give negotiators some breathing room, but that lasting, multi state commitments will ultimately be needed to secure the river system's future (Bureau of Reclamation).
