CA, US & World
Lake Powell Faces Critical Power Threat by 2026 as Groundwater Dwindles
The U.S. Bureau of Reclamation is warning that Lake Powell may fall below its minimum power pool level by September 2026, a critical threshold that threatens the dam’s ability to generate hydroelectric power. Below this level, only emergency bypass tubes—never designed for constant use—could release water, but recent use already caused damage.
So how did the lake reach this point after appearing relatively stable last year?
Sarah Porter, Director of Arizona State University’s Kyl Center for Water Policy, says it comes down to two factors: low snowpack and overuse. “We had a terrible winter,” Porter explained, noting insufficient snowmelt failed to replenish the reservoir system. And with continued high demand, the situation has grown worse.
Porter adds that upstream reservoirs are now sitting at around 40% capacity, offering little relief. “There’s not a heck of a lot of water available,” she said.
Meanwhile, the groundwater picture is equally grim. ASU researcher Karem Abdelmohsen, who co-authored a study on the region’s groundwater loss, found that from 2015 to 2024, depletion has occurred at three times the rate of the previous decade. “Groundwater storage is our savings account,” he said. “And we’re using both our savings and spending accounts at the same time.”
The study’s maps show increasingly dark zones over time, representing accelerating groundwater decline across much of the West.
With the current Colorado River usage agreement expiring in 2026, states in the basin now face a tight six-month window to develop a new plan for who gets what, and where to cut. The challenge will be balancing dwindling surface and groundwater supplies against the demands of millions of users across the Southwest.
Explore: NBCPalmSprings.com, where we are connecting the Valley.
By: CNN Newsource
July 24, 2025
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