Travelers are voting Olivenhain Dam, Loveland Dam and Sweetwater Dam as the best of 3 dams near San Diego. There are 1 dam near Oceanside a city just 30 km from San Diego and 1 dam near Playas de Rosarito which is 32 km distant. The most popular of these are Olivenhain Dam near Oceanside and Sweetwater Dam in Playas de Rosarito. You can find 38 dams in California and 138 dams in the country of United States. Our members favorite in California is Morris Reservoir and Hoover Dam is the top pick in United States. Want more? Check out our map of dams near San Diego.