Deerfield Dam and Reservoir, located on Castle Creek, a tributary of Rapid Creek, is operated by the Bureau of Reclamation. The reservoir contains 400 surface acres and has 16 miles of shoreline. wth public use areas, camping, picnic areas, concession, swimming, boating, hiking, and fishing. Available species include rainbow trout, brown trout, and rock bass.
Location: 25 mi Wof Rapid City