| Coords: | 33.2417°N -116.7631°W |
| Basin Countries: | United States |
| Area: | 1140acres |
| Pushpin Map: | California#USA |
| Pushpin Map Alt: | Location of Lake Henshaw in California, USA. |
| Agency: | Vista Irrigation District |
Lake Henshaw is a reservoir in San Diego County, California, at the southeast base of Palomar Mountain, approximately northeast of San Diego and southeast of Los Angeles.[1]
The lake covers approximately and holds of water when full (lowered in 1978 from its original capacity of out of earthquake concerns),[2] in addition to groundwater stored in its local basin. It drains an area of at the source of the San Luis Rey River.
The lake was constructed in with the building of Henshaw Dam, an earth dam 123feet tall and 650feet long. It is owned by the Vista Irrigation District and used primarily for agricultural irrigation.
The lake features opportunities for catfish and carp fishing. Boats and cabins are available for rental. It hosts The Carp Throwdown fly fishing tournament organized by the Fly Stop.