Lake Powell and the Colorado River System Face Continued Drought and Reduced Hydropower Output

     Lake Powell in Arizona is part of the Colorado River system. The U.S. Southwest has been undergoing a long-term drought, and water levels continue to drop, nearing critical thresholds for the Glen Canyon Dam’s ability to generate hydroelectricity. A recent water surface measurement recorded a level about 34 feet above the 3,490-foot “minimum power pool” at which Glen Canyon Dam can no longer generate hydropower. Previous projections suggested that the water level could fall that low as soon as August 2026. The U.S. Bureau of Reclamation (USBR) handles data for the lake and river system. There are wider potential implications of the ongoing drought. Current management involves releases from other reservoirs. 

     Newsweek’s Joe Edwards has been following the story and reports:

“The wider stakes extend well beyond the reservoir. The drought-stricken Colorado River provides municipal water to about 40 million people, supports more than 8 billion kilowatt-hours of hydropower a year—enough for about 700,000 homes—and sustains 5.5 million acres of farmland, according to USBR.”

     A second concern with the situation is the possibility of future restrictions on downstream water use.

“Glen Canyon Powerplant has eight generators with a total capacity of 1,320,000 kilowatts, according to USBR. As Lake Powell drops, the dam also loses hydraulic “head,” reducing the efficiency of power production even before turbines are fully shut off, according to reporting from the Lake Powell Chronicle.”

     In April, federal water managers issued emergency actions to shore up Lake Powell, moving water from the upstream Flaming Gorge reservoir and reducing releases to Lake Mead, amid record-low snowpack and deepening drought on the Colorado River. Releases to Lake Mead are important for residents, farmers, and customers downstream in Arizona, Nevada, and California. The reduced snowpack and prolonged drought have led to Colorado River levels at 36% of capacity. Edwards continues:

“The agency said in April it intended to add up to about 2.48 million acre-feet to Lake Powell by releasing 660,000 acre-feet to 1 million acre-feet from Flaming Gorge Reservoir and reducing Lake Powell’s annual release to Lake Mead from 7.48 million acre-feet to 6 million acre-feet through September 2026.”

“But USBR also acknowledged the trade-off: reduced releases from Lake Powell would “accelerate the downstream decline of Lake Mead,” with the potential for up to an additional 40 percent reduction in Hoover Dam hydropower generating capacity as early as this fall, it said.

     The emergency releases and withholdings issued are expected to raise Lake Powell’s water level by 54 feet to at least 3500 ft elevation by April 2027. The Flaming Gorge Reservoir was 83% full in April and is expected to drop to 59% full by next April.

     He cites a 2024 study published in Communications Earth & Environment that concluded that agriculture is responsible for 74% of all human uses of the river water and 52% of total water use. It also found that cattle-feed crops like alfalfa were responsible for 46% of the river’s direct water use. It will not be able to sustain that usage level, and some of those crops and nut orchards may have to be abandoned. 

     Recreation and tourism around the lake are likely to be affected as well. Local officials noted media headlines leading to cancellations. According to Bob Hembree of the Lake Powell Chronicle:

"The national media... has done nothing but put out sensational headlines saying there’s no water in Lake Powell, we’re going dead pool, all of the above," Franz said. She noted that these reports have a direct economic cost, mentioning that she had already heard from a business that "had four cancellations because of a headline back East."

     Hydroelectric output of the Glen Canyon Dam has long been decreasing. It used to power 40% of the nearby city of Page, but now provides only 20%, and power costs have increased.

     Current constraints on Lake Powell and the Colorado River Basin water supply are given below.

     Seven Western states and parts of Mexico share the greater Colorado River basin and must share the water resource. Thus, there will be continuing discussions in the future about how to manage it. The Dept of the Interior has indicated that it will manage the basin rather than have the states do it. Secretary of the Interior Doug Burgum met with Governors for the seven basin states, Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming, and their designees in April to discuss the concerning hydrology and plans for operations. He noted then:

“Interior and Reclamation continue to coordinate with the basin states, tribes, Mexico and basin stakeholders as we make the decisions necessary to operate and protect the system.”

Assistant Secretary - Water and Science, Andrea Travnicek, noted:

“As we weigh current conditions and prepare for future operations by working with states, tribal nations and stakeholders, the Department of the Interior and Reclamation remain fully committed to taking the actions necessary to reduce impacts on water deliveries, safeguard critical infrastructure, and preserve as much operational flexibility as possible.”  

 

References:

 

Lake Powell nears "dead power pool"—what it means for millions of Americans. Joe Edwards. Newsweek. July 14, 2026. Lake Powell nears "dead power pool"—what it means for millions of Americans

Reclamation Acts to Protect Colorado River System During Historic Drought: The prolonged drought combined with the lowest winter snowpack on record is requiring swift actions to protect this vital water system. Bureau of Reclamation. April 17, 2026. Reclamation Acts to Protect Colorado River System During Historic Drought

The Great Shuffle: Emergency Water Moves Aim to Save Glen Canyon Power. Bob Hembree. Lake Powell Chronical. July 16, 2026. The Great Shuffle: Emergency Water Moves Aim to Save Glen Canyon Power - Lake Powell Chronicle

Lake Powell Water Level Crisis Sparks Emergency Response. Joe Edwards. Newsweek. April 18, 2026. Lake Powell water level crisis sparks emergency response - Newsweek