Platte Creek Recreation Area is a South Dakota state recreation area on the eastern shore of Lake Francis Case, a Missouri River reservoir. Encompassing 252 acres, it is managed for public recreation rather than as a wilderness preserve. Open year-round, the area focuses on access to the lake and shoreline, serving visitors who come to camp, swim, fish, hike, and boat. Its significance lies in its role as one of the public recreation destinations along Lake Francis Case, providing protected access to the reservoir and its surrounding landscape.