Seven Oaks Dam

Reservoir Levels Weather Hydrology

The Seven Oaks Dam is a concrete gravity dam located in San Bernardino County, California. Built in 1999, it stands at 550 feet tall and spans 2,200 feet across the Santa Ana River. The dam was constructed to protect the cities of San Bernardino and Riverside from severe flooding. The hydrology of the region is heavily influenced by snowpack, which is the primary source of surface water for the Santa Ana River. The dam captures water from the river during wet seasons and releases it during dry seasons to support agricultural and recreational activities downstream. The dam has a capacity of 182,000 acre-feet and can hold up to 6.4 billion gallons of water. The area around the Seven Oaks Dam has become a popular destination for hiking, fishing, and other outdoor activities.

June 15, 2024







Storage 24hr Change -0.02%
Percent of Normal 100%
Minimum 2,122.74 acre-ft
Maximum 2,310.89 acre-ft
Average 2,162 acre-ft
Nid_Height 550
Hydraulic_Height 520
Drainage_Area 177
Year_Completed 1999
Dam_Height 550
Primary_Dam_Type Rockfill
Surface_Area 780
Hazard_Potential High
Nid_Storage 145600
River_Or_Stream Santa Ana Riv
Dam_Length 2980

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