1998 Map of Black Horse Butte

About this map

Standing Rock Indian Reservation Boundary cuts across this expansive landscape in Corson County, where the sprawling Grand River National Grassland dominates the terrain. The map documents a sparsely populated ranching economy defined by family operations including M Gebhart Ranch, B Parrett Ranch, and H Baer Ranch. This 1998 revision of earlier topographical data reveals a network of seasonal watercourses like Black Horse Butte Creek, Darling Creek, and Beef Creek that drain toward the Grand River. Notable elevations like Black Horse Butte and Twin Butte serve as primary landmarks for orientation in this open prairie. For genealogists and local historians, the inclusion of specific ranch names and a lone Cem provides important clues to the homesteading patterns and lineage of the late 20th-century Dakotas.