Lake Powell, the second-largest U.S. reservoir, has reached a historic low, intensifying concerns over the Colorado River system's crisis. The dwindling water levels threaten supply for over 40 million people and hydropower generation, as federal and state officials struggle to agree on a long-term management plan.
The record low levels at Lake Powell threaten a critical water and electricity supply for millions of Americans and could lead to significant water use restrictions in several Western states, impacting agriculture, industry, and daily life.
Lake Powell, the second-largest reservoir in the United States, has reached a record low water level, intensifying concerns about the ongoing crisis in the Colorado River system. The milestone, reached on Saturday, follows a similar historic low for Lake Mead just a week prior. These plummeting water levels pose a significant threat to the Colorado River Basin, a vital resource for wildlife, hydropower, and more than 40 million people across seven U.S. states.
The crisis stems from persistent overuse of the river, compounded by a record-dry winter and rising temperatures, which have severely depleted both reservoirs. Lake Powell's elevation dropped to 3,519.91 feet (1072.9 meters) on Saturday, slightly below its previous record set in April 2023. The reservoir is now over 20 feet lower than at the beginning of the year and approximately 30 feet away from the critical point where its turbines would cease producing hydroelectric power.
Federal officials had warned in April that a substantial intervention would be necessary to prevent reaching this hydropower generation threshold by the end of the year. In July, the U.S. Bureau of Reclamation proposed a 10-year plan that includes potentially significant water cuts for Arizona, California, and Nevada. The current low levels are the lowest the reservoirs have been in nearly seven decades, with their combined storage last seen at this level in May 1957, when the Glen Canyon Dam was under construction. The depletion has also impacted Lake Powell's tourism industry, forcing marinas to adapt by closing or relocating boat ramps and moving to deeper waters.