Lyons Reservoir

Reservoir Levels Weather Hydrology

Lyons Reservoir is a man-made lake located in the Sierra Nevada Mountains in California, providing hydroelectric power generation, irrigation, and recreational activities. It was constructed in the 1930s to create a reliable water supply and hydropower facility for the local area. The reservoir is fed by surface flow from the Stanislaus River and the North Fork of the Tuolumne River, as well as from snowpack melting during the spring season. The area around the reservoir is primarily used for agricultural purposes, including grazing and timber harvesting. The reservoir is also a popular spot for fishing, boating, and camping during the summer months. The surrounding forests and mountain ranges offer opportunities for hiking, hunting, and other outdoor activities.

June 22, 2024







Storage 24hr Change 0.15%
Percent of Normal 78%
Minimum 4 acre-ft
Maximum 14,510 acre-ft
Average 5,132 acre-ft
Dam_Height 132
Drainage_Area 66.8
Year_Completed 1930
Nid_Storage 6228
Primary_Dam_Type Concrete
Surface_Area 184
Hazard_Potential High
Outlet_Gates Tainter (radial) - 4
River_Or_Stream South Fork Stanislaus River
Dam_Length 535
Nid_Height 132

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