Lake Jennings is a reservoir located in San Diego County, California. It was constructed in 1962 to provide drinking water to the region. The lake has a capacity of 9,790 acre-feet and is fed by both surface flow and snowpack providers. The surface flow comes from the San Diego River, while snowpack providers include the Cuyamaca Mountains and the Laguna Mountains. The lake is managed by the Helix Water District and is also used for recreational activities such as fishing and camping. Additionally, the lake’s surrounding areas are used for agricultural purposes, including cultivating avocados and citrus fruits. Overall, Lake Jennings has played a significant role in providing water to the San Diego region and supporting various agricultural and recreational activities.