Colorado River Basin States Remain Deadlocked as Reservoirs Hit Historic Lows and Deadline Looms

Friday, 4 September 2026

The Colorado River system's combined storage has fallen to its lowest level since before Lake Powell first began filling in 1963, with the two largest reservoirs, Lake Powell and Lake Mead, sitting at a weighted average of just 32.7 percent of capacity as of early September, a level federal monitors classify as "warning" status. Lake Powell alone dropped to roughly 25 percent full earlier this year and remains on track for a possible record low within the next twelve months, according to Bureau of Reclamation projections, intensifying pressure on the seven states that depend on the river for drinking water, agriculture and power generation.

The U.S. Department of the Interior issued a Record of Decision on August 21 adopting a "Decision Framework" for coordinated operations of Lake Powell and Lake Mead covering 2027 through 2036, alongside interim operating guidelines for 2027 and 2028. Under the framework, Arizona, California and Nevada, the Lower Basin states, face defined mandatory reductions in their river allocations, while Colorado, New Mexico, Utah and Wyoming in the Upper Basin are being asked to develop their own measures to help protect water levels behind Glen Canyon Dam. Reclamation has set an initial target of limiting Lake Powell releases to between 6 million and 7 million acre-feet, aiming to keep the reservoir's elevation at or above 3,510 feet.

Despite the federal framework, the seven basin states have still not reached a voluntary consensus agreement, and the current operating rules governing the river, including the 2007 Interim Guidelines and the 2019 Drought Contingency Plans, are set to expire at the end of 2026. Interior Secretary Doug Burgum met earlier this year with the basin governors in Washington in an effort to break the impasse, and officials on both sides have described talks as continuing but unresolved, with water officials and legal experts warning that failure to reach agreement could push unresolved allocation disputes into federal court just as the current guidelines lapse.

The prolonged Colorado River crisis is playing out alongside broader drought pressure across the country: as of September 1, nearly half the United States, and almost 59 percent of the Lower 48 states, was classified as being in drought, with conditions worsening recently in the South-Central states, the Northern Plains and pockets of the Northeast, according to federal drought monitoring data. Water utilities nationwide are also grappling with a separate, compounding challenge, as they work to meet new federal requirements to remove PFAS "forever chemicals" from drinking water, a mandate that industry groups say adds substantially to the roughly $56 billion annual funding gap already facing U.S. water infrastructure. With the Colorado River's operating guidelines set to lapse in a matter of months, officials across the basin say the coming weeks are critical to reaching a negotiated deal before the decision is taken out of their hands.