Reservoir Levels Weather Hydrology

Don Pedro Reservoir is a man-made lake situated in the Sierra Nevada foothills of California, about 10 miles from La Grange. This reservoir was created by the construction of the Don Pedro Dam on the Tuolumne River in 1923. It has a storage capacity of 2,030,000 acre-feet and is one of the largest water storage facilities in California. The reservoir serves as a critical source of water for irrigation, hydroelectric power generation, and municipal supply. It is also a popular recreational destination, offering activities such as fishing, boating, camping, and hiking. The reservoir receives its water from various sources, including snowmelt from the Sierra Nevada mountains, rainfall, and surface flow from the Tuolumne River. The snowpack providers are the Sierra Nevada Mountains, and the surface flow is provided by the Tuolumne River. The water from the reservoir is used for agricultural purposes in the Central Valley and in cities such as San Francisco and Modesto.

June 13, 2024







Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change 0%
Percent of Normal 104%
Minimum 670.95 ft
Maximum 829.76 ft
Average 790 ft
Dam_Height 585
Hydraulic_Height 560
Drainage_Area 1540
Year_Completed 1971
Nid_Storage 2300000
Structural_Height 585
Foundations Rock
Surface_Area 13000
Outlet_Gates Tainter (radial) - 3
River_Or_Stream Tuolumne River
Dam_Length 1900
Hazard_Potential High
Primary_Dam_Type Earth
Nid_Height 585

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