El Capitan Dam

Reservoir Levels Weather Hydrology

El Capitan Dam, located in San Diego County, California, was built in the 1930s as a hydroelectric facility. It is a concrete gravity dam that stands at 237 feet tall and 1,600 feet long. The dam serves as a surface water storage facility that can hold up to 112,800 acre-feet of water. The hydrology surrounding the dam is primarily fed by the San Diego River, which is reliant on snowpack melt from surrounding mountains. The dam provides water to the San Diego County Water Authority, which serves over 3.3 million residents. Additionally, the water is used for recreational purposes such as fishing, boating, and camping. The surrounding agricultural community also benefits from the water supply provided by the dam.

June 14, 2024







Storage 24hr Change -0.25%
Percent of Normal 100%
Minimum 24,853 acre-ft
Maximum 59,525 acre-ft
Average 37,766 acre-ft
Nid_Height 237
Hydraulic_Height 217
Drainage_Area 190
Year_Completed 1934
Dam_Height 237
Primary_Dam_Type Earth
Surface_Area 1562
Hazard_Potential High
Nid_Storage 112800
River_Or_Stream San Diego River
Dam_Length 1170

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