Western US Reservoir Levels
Nine major reservoirs, updated daily from official Bureau of Reclamation and California DWR gauges.
- Lake Mead is 27.1% full at 1,041.38 feet and Lake Powell is 23.3% full at 3,523.15 feet as of .
- The seven Colorado River system reservoirs tracked here hold 18.69 million acre-feet combined — 32.1% of their combined 58.15 million acre-foot capacity.
- Shasta Lake is 70.2% full and Lake Oroville is 78.0% full as of .
- Every number on this site comes from official Bureau of Reclamation or California DWR gauges, is stamped with its as-of date, and is downloadable as CSV.
Colorado River system
71.7%
6,013.26 ft · 2,687,680 AF
wk -0.64 ft · yr -13.28 ft
California
Context pages
Colorado River shortage tiers — the 1,075 / 1,050 / 1,025 ft Lake Mead thresholds from the 2007 Interim Guidelines and DCP, and what applies in 2026.
Post-2026 operating guidelines — the process replacing the current rules, which expire at the end of 2026.
Data downloads — daily CSVs for all nine reservoirs.
Changes shown are elevation changes in feet over the trailing week and year. Percent full is storage divided by each reservoir's published capacity — bases and sources on the about page. This site publishes observations only: no forecasts, no predictions, no advice.