| Lake Del Valle | |
| Coords: | 37.5983°N -121.7211°W |
| Length: | [1] |
| Cities: | Livermore, California |
| Pushpin Map: | California#USA |
| Pushpin Map Alt: | Location of Lake Del Valle in California, USA. |
Lake Del Valle is a storage reservoir located 10miles southeast of Livermore, in Alameda County, California. It is within Del Valle Regional Park.
The lake is on Arroyo Valle (Spanish for "creek of the valley") in the Diablo Range, and is formed by Del Valle Dam, completed in .[2]
The lake and dam are part of the California State Water Project, as part of the South Bay Aqueduct. The lake serves in part as off-stream storage for the South Bay Aqueduct. The capacity of the lake is 77000acre.ft, however, the lake has a flood storage of 25000acre.ft40000acre.ft. Thus normally stores 37000acre.ft52000acre.ft. The lake is a popular destination for hikers, bikers, and boaters. The Hetch Hetchy Aqueduct passes below the lake, but does not connect to it.
The California Office of Environmental Health Hazard Assessment issued a fishing advisory regarding the mercury levels of fish caught from the body of water.[3]
The dam is 230feet high and 880feet long. Its crest elevation is 773feet. The dam contains 4150000cuyd of earth fill.[1]