Federal Plan Cuts Colorado River Water to Arizona and California — What It Means for Southwest Land Values

Reclamation's final EIS lays out a 10-year adaptive management framework for the river's two largest reservoirs — Lake Mead, behind Hoover Dam, and Lake Powell, behind Glen Canyon Dam — with operations revisited every two years. Under the plan, annual releases from Lake Powell would range from roughly 5 million to 12 million acre-feet depending on hydrology. For scale, a single acre-foot supplies roughly two to four U.S. households for a year.

The rules currently governing those reservoirs — the 2007 interim guidelines and the 2019 drought contingency plans — expire in 2027. A federal Record of Decision finalizing near-term operations is expected to follow this EIS.

The 1922 Colorado River Compact was built on an assumption that roughly 17.5 million acre-feet of water was available annually across the basin and Mexico. The river's actual historical average natural flow has been closer to 14.7 million acre-feet — and between 2020 and 2024 that average fell to just 11.2 million acre-feet, according to provisional Reclamation data. Over the same period, basin-wide use plus evaporative loss averaged just over 13 million acre-feet.

That gap between what the law promised and what the river delivers is the entire reason cuts are now unavoidable.

PlaceAcre analysis — not a sourced third-party claim

Irrigated cropland and pasture in Colorado River-dependent counties — Yuma and La Paz counties in Arizona, and Imperial and Riverside counties in California — carries a value premium tied directly to reliable water delivery. As allocation certainty erodes, we expect appraisers and buyers to increasingly discount irrigated acreage that depends on Lower Basin water.

In our own conversations with owners in affected counties, some are choosing to sell rather than gamble on future cuts or absorb the cost of irrigation-efficiency retrofits. That pattern echoes what we documented in Arizona's Hualapai Valley water crisis and in our reporting on Arizona trust land's $140 billion opportunity.

The Lower Basin — Arizona, California, and Nevada — now uses less water than its legal apportionment, and wants future cuts shared across all seven basin states. The Upper Basin — Colorado, New Mexico, Utah, and Wyoming — has never used its full legal entitlement and argues that variable conditions, including this year's record-low snowpack, already constrain its use. The Upper Basin states have offered voluntary conservation of up to 200,000 acre-feet, not mandatory cuts.

"The operational ranges that Reclamation put forward, they're the right things that we need to be doing in order to fix the supply and demand imbalance. But it is just a range, and what they actually do over the next two years or within any given year, that will matter if they're actually gonna be able to bring the system back into balance."

A federal Record of Decision follows the EIS and will set near-term operating rules once the current guidelines lapse in 2027. Absent a voluntary seven-state agreement before then, reporting on the plan has raised the real possibility — not a certainty — that unresolved disputes over Colorado River allocations end in interstate litigation that could ultimately reach the U.S. Supreme Court.

For landowners, the practical takeaway is that the timeline is short and the range of outcomes is wide. Nothing in the current plan is final for the post-2028 period, and the deeper cut scenarios remain unresolved.