2021 Map of South of Pierre

About this map

The Fort Pierre National Grassland dominates this central South Dakota landscape, where the prairie is defined by drainage patterns and section lines. This area, located south of the state capital, shows a network of creeks that serve as vital water sources in the semi-arid environment, including Antelope Creek and Gray Blanket Creek. The map captures the meeting of three counties—Stanley, Lyman, and Jones—revealing the administrative complexity of managing these public lands. Transportation through the grassland relies on a grid of rural routes such as Warcreek Rd and Co Hwy 20. The surveying of township and range lines, such as t109n r79w, provides a clear view of the Public Land Survey System that organized the Great Plains into manageable parcels for ranching and grazing.