Colorado River Basin Water Supplies in Peril, Experts Warn

The Colorado River basin and its two largest reservoirs — Lake Mead and Lake Powell — are facing potentially record-low water levels in the coming months, according to new projections from the U.S. Bureau of Reclamation. The warning comes as drought conditions and chronic overuse continue to strain a water system that serves more than 40 million people across the western United States.

The Bureau’s 24-month study, released on May 15, indicates that Lake Mead could reach a record-low elevation of 1,036 feet in 2026, surpassing the previous low of approximately 1,040 feet set in 2022. Meanwhile, Lake Powell faces the prospect of dropping below the minimum level required for hydropower generation as soon as July 2026 under worst-case scenarios, according to ABC News.

A Historic Snow Drought

The dire projections are driven by a catastrophic snow drought across the western United States during the 2025-2026 winter. Wyoming, Utah, Colorado, and New Mexico recorded their lowest peak snowpack on record, and 10 of 11 western states experienced their warmest or second-warmest water year on record.

Water flowing into Lake Powell between April and July 2026 is forecast at just 800,000 acre-feet — a mere 13% of the 30-year average. Cody Moser, senior hydrologist at the Colorado River Basin Forecast Center, said during a May 7 webinar that about half of that water has already arrived due to a record-breaking warmup in March that triggered an early runoff, as reported by the Water Education Foundation.

Jon Meyer, assistant Utah state climatologist, described the situation bluntly. “We’ve been monitoring how the dismal thin snowpack melts travel down through the watersheds, and how much reservoir recharge and stream flow we can expect this year,” Meyer told ABC News. “It is just exceedingly underperformed a normal situation.”

Decades in the Making

While this year’s snow drought is acute, experts emphasize that the Colorado River crisis is the result of a multi-decade trend. The river system has been operating under an increasingly warmer and drier climate, compounded by water rights that were established during an unusually wet period in the 20th century.

“This is a multi-decade-old drought, and on top of that multi-decade-old drought are the impacts of climate change, which predominantly translate into higher temperatures, more variable precipitation, and drier soils and higher demand,” Dave White, director of the Global Institute of Sustainability and Innovation at Arizona State University, told ABC News.

Brad Udall, a climate and water expert, offered an even starker assessment. “It’s really grim. It’s horrific. The impacts are going to be everywhere,” Udall said.

Hydropower at Risk

Beyond water supplies for cities and farms, the declining reservoir levels threaten the region’s hydropower infrastructure. The minimum surface elevation needed to generate power at the Hoover Dam is 1,050 feet, according to the Bureau of Reclamation. Lake Mead is now perilously close to that threshold. A “dead pool” — when water is too low to flow downstream from a dam — exists at 895 feet.

Lake Powell faces similar risks. If levels fall below the power pool, the Glen Canyon Dam could cease generating electricity, affecting approximately 2.5 million people who rely on hydropower from the Colorado River’s hydroelectric facilities.

Political Deadlock

Despite the mounting crisis, the seven Colorado River basin states remain deadlocked over post-2026 water management guidelines. The states have missed two federal deadlines to reach a consensus, and the current operating guidelines expire at the end of 2026.

“You’d think that all of these signals would be pointing to the fact that we really need to do something different, but we’re not,” Elizabeth Koebele, a water policy expert, told ABC News.

Anne Castle, a former assistant secretary of the Interior, echoed that frustration. “We have all those underlying conditions, and we don’t have a compromise,” she said.

The Bureau of Reclamation released a Draft Environmental Impact Statement in January with five options for post-2026 operations. The public comment period closed on March 2 with 18,127 submissions, but a consensus plan among the seven states remains elusive.

What’s Next

The immediate implications are stark: water restrictions across Western cities, potential hydropower shutdowns at Glen Canyon Dam, agricultural impacts affecting the national food supply, and increased wildfire risk. Multiple states have already declared drought emergencies in 2026.

Looking ahead, the Bureau is expected to issue a record of decision with operational guidelines for 2027 and 2028, along with a framework extending through 2036. But without a unified agreement among the basin states — and without meaningful action to address the underlying drivers of climate change — the Colorado River crisis is likely to deepen.

As Dave White noted, “I think it’s fair to say no one is happy with it.” The question now is whether the severity of the situation will finally force the difficult compromises that have so far proven out of reach.