Overview
- Lake Mead fell to about 1,040.5 feet on Friday, Aug. 7, 2026, the lowest recorded elevation since the reservoir was filled in the 1930s.
- Federal officials announced a July 31 plan that could force Arizona, California and Nevada to cut as much as 3 million acre-feet over multiple years.
- The Bureau of Reclamation is holding extra water in Lake Powell to protect upstream infrastructure, a step officials say is already accelerating declines at Lake Mead and could cut Hoover Dam hydropower by roughly 40 percent.
- Arizona officials warn that large mandatory cuts could leave the Central Arizona Project canal short or dry, threatening municipal supplies for Phoenix and irrigation for farms.
- More than two decades of warming, low mountain snowpack and an over-allocated river have driven the decline, and federal forecasts project repeated new record lows through 2028 unless flows or water use change.