(South Dakota)
Platte Creek Recreation Area is a South Dakota state recreation area located on the eastern shore of Lake Francis Case, a Missouri River Reservoir in Gregory County, South Dakota in the United States. The recreation area is 252 acres (102 ha). The area is open for year-round recreation including camping, swimming, fishing, hiking and boating. (Ref: https://en.wikipedia.org/wiki/Platte_Creek_Recreation_Area)