2021 Map of Thomas Lake SW

About this map

Medicine Knoll Creek meanders through the grasslands along the border of Sully County and Hyde County, defining much of the drainage in this rural interior of South Dakota. The landscape is characterized by its glacial depressions and numerous small wetlands, with Stone Lake appearing as a prominent body of water in the northwest corner. This area is etched by a precise grid of sectional roads, including 324th Avenue and 181st Street, which facilitate access to remote agricultural holdings and ranchlands. The map reveals the systematic organization of the Public Land Survey System across Townships 115 and 116 North, where isolated locations like Cougar Place punctuate an otherwise open prairie environment. Small county routes such as County Road 649 serve as vital connectors for the local ranching community, tracing the subtle elevations of the Dakota plains.