Shadehill Recreation Area is a state recreation area in northwestern South Dakota surrounding Shadehill Reservoir in Perkins County. Managed by the South Dakota Department of Game, Fish, and Parks, it spans 2,287 acres and is organized around outdoor recreation on and near the water. The area includes campgrounds and beaches, along with access for boating, fishing, and other water activities. Its significance lies in serving as one of the state's recreation destinations built around a large reservoir landscape.