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Historically low water level in two crucial US reservoirs threatens water and power millions

CNN • July 22, 2026 • nation

Key Points:

The combined water levels in Lake Powell and Lake Mead, two of the largest US reservoirs, have dropped to their lowest since 1957, signaling a critical moment in the Colorado River crisis that threatens water supply for 40 million people.
Both reservoirs are significantly depleted due to prolonged drought, increased water demand, and climate change, with Lake Powell at 23% capacity and Lake Mead at 27%, both nearing historic lows.
Experts warn that if levels continue to fall, Lake Powell could reach a point where it can no longer generate hydropower by spring 2027, and the system risks failing to deliver water altogether.
Negotiations among the seven states relying on the Colorado River for water allocation remain unresolved, with states facing the challenge of agreeing to substantial water cuts amid complex political and practical considerations.
While El Niño may bring some short-term relief with increased precipitation, experts emphasize that long-term solutions require immediate action, including improved water efficiency and crop management, rather than reliance on seasonal snowpack recovery.

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