Overview
- Lake Mead sank to a new low on Monday, measured by the Bureau of Reclamation at about 1,040.3–1,040.46 feet above sea level.
- The Department of the Interior in late July proposed interim operating rules that could require Lower Basin states to cut up to about 3 million acre-feet through 2036.
- Federal forecasts show the reservoir nearing the 1,035-foot threshold that would force Hoover Dam to idle turbines and sharply reduce hydropower output.
- Regional water agencies are preparing allocation cuts for 2027–28 and expanding emergency conservation, with Southern Nevada already planning lower allocations while citing strong local conservation.
- The decline reflects a record-warm winter and the worst snowpack on record plus long-term overallocation, leaving combined storage at Lakes Mead and Powell near the lowest levels in decades and stressing supplies for roughly 30–40 million people.