Lake Powell Hits Historic Low, Hydropower Threatened

Lake Powell has reached its lowest level in over 60 years, a milestone that has reignited discussions about managing the Colorado River's main storage system. The reservoir is now approximately 30 feet above the elevation where Glen Canyon Dam can no longer generate hydropower normally. Climate scientists have projected these low water levels for nearly two decades, attributing a 20 percent decline in Colorado River flows to a warming climate, with potential further reductions of 20 percent to 40 percent in the coming decades.

Experts emphasize that critically low reservoir levels should be considered the new normal. Lake Powell is approaching its minimum power pool elevation of approximately 3,490 feet. Below this point, water releases for hydropower generation would cease, and downstream deliveries would rely on outlet works that carry operational risks and could affect dam safety. Federal officials have implemented measures, such as releasing water from upstream reservoirs and reducing flows to Lake Mead, to stabilize Lake Powell.