Shadehill Dam, Grand River National Grassland

Shadehill Dam is a dam on the Grand River in Perkins County in northwestern South Dakota in the United States, about 10 miles south of Lemmon. The dam and its impoundment, Shadehill Reservoir, serve mainly for flood and silt control, wildlife conservation and recreation. Located directly below the confluence of the North and South Forks of the Grand River, the dam is operated by the U.S. Bureau of Reclamation, and is part of the Shadehill Unit of the Pick-Sloan Missouri Basin Program. ()