While Lakeside was first named for the presence of the small, natural lake it was founded around, it is now home to a trio of large reservoirs: Lake Jennings, El Capitan Reservoir and San Vicente Reservoir. All three are kept stocked by the California Department of Fish and Wildlife with various types of fish ranging from largemouth bass to catfish and rainbow trout, and are popular fishing destinations for local and county residents. The latter two are also open to recreational water activities such as wakeboarding and jetskiing; however, San Vicente is currently closed to the public until at least 2014.