Us Army Corps of Engineers, South Dakota.
Cottonwood Springs Dam, SD was constructed to reduce flood damages in the Fall River Basin. Located just 5 miles west of Hot Springs on U.S. Highway 18 and nestled in the rugged hills and evergreen trees of the southern Black Hills, Cottonwood Springs Lake is the place to go for nature lovers. This recreation area offers primitive camping only (no hookups), hiking, fishing (only electric motors), and picnicking.
5 miles west of Hot Springs just off Highway 18.