Reservoir Levels Weather Hydrology

Del Valle is a reservoir located in Alameda County, California. The reservoir was created in 1968 when the Del Valle Dam was constructed on Arroyo Valle. The dam was built for flood control, irrigation, water supply, and recreation. The reservoir has a capacity of 77,000 acre-feet and serves as a crucial water source for the Bay Area. The hydrology of Del Valle is largely influenced by the snowpack in the Sierra Nevada Mountains, which melts in the spring and provides surface flow to the reservoir. The reservoir is also fed by Arroyo Valle Creek and Arroyo Mocho. Del Valle is used for agricultural purposes, including vineyards and cattle ranching, as well as for recreational activities such as boating, fishing, and camping.

July 19, 2024







Storage 24hr Change -0.29%
Percent of Normal 101%
Minimum 24,966 acre-ft
Maximum 54,003 acre-ft
Average 38,232 acre-ft
Nid_Height 222
Hydraulic_Height 194
Primary_Dam_Type Earth
Drainage_Area 146
Year_Completed 1968
Dam_Height 222
Hazard_Potential High
River_Or_Stream Arroyo Valle
Surface_Area 710
Nid_Storage 77100
Dam_Length 880

Regional Streamflow


Cubic Feet Per Second


Cubic Feet Per Second


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Cubic Feet Per Second

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Circle Park

As an AI language model, I do not possess personal opinions and do not have the capability to browse multiple independent sources. However, here is a summary of Circle Park based on available information. Circle Park is a public park located in the city of Norco, California. It is a popular destination for locals and tourists alike, offering various recreational activities and amenities. The park spans 10 acres and features a playground, picnic areas, basketball courts, horseshoe pits, and a skate park. It also hosts several events throughout the year, including the Norco Fair and the Norco Christmas Parade. One ...