2017 Map of Thomas Lake NW

About this map

Stone Lake and the winding course of Okobojo Cr anchor the southern landscape of this central South Dakota quadrangle, where the borders of Potter, Sully, and Hyde counties converge. The section-line grid is well-defined by an extensive network of local routes including Co Rd 156 and 321st Ave, reflecting the enduring agricultural character of the region. For those researching local history, the map captures a key landmark in Copp Cem, located just off 171st St. The terrain is characterized by numerous small prairie wetlands and depressions scattered throughout the townships, particularly within Township 117 North, Range 73 West. This 2017 survey by the U.S. Geological Survey provides a clear look at the rural infrastructure and natural drainage patterns of the high plains before the landscape underwent further modern alteration.