2015 Map of Black Horse Butte NW

About this map

Grand River National Grassland dominates the landscape in this section of Corson County, where the wide valley of the Grand River carves through the plains. The terrain is defined by a dendritic network of drainages, including Thunder Hawk Creek and Cyclone Creek in the north, and the winding path of Cottonwood Creek to the southwest. This 2015 survey illustrates the enduring Public Land Survey System grid that organizes the South Dakota prairie, with section lines marked by rural routes such as 114th St and 208th Ave. The map captures the open, sparsely settled character of the Rock Creek District, where the land use is primarily governed by the national grassland designation, preserving a landscape largely unchanged by modern development.