Lakes in Union County, South Dakota and Surrounding Areas   1. Horseshoe Lake 2. McCook Lake        This lake is a stunning 273 acre lake.... 3. Lake Nixon OTHER COUNTIES NEARBY Cherokee County Harrison County Lyon County        2. Lake Pahoja, Lyon County Monona County Osceola County Plymouth County Sioux County Woodbury County        3. Browns Lake, Woodbury County Burt County Cedar County Cuming County Dakota County Dixon County        4. Buckskin Hills Lake, Dixon County Dodge County Stanton County Thurston County Wayne County Clay County Lincoln County Turner County Yankton County        5. Lewis and Clark Lake, Yankton County South Dakota Lakes