2015 Map of Whetstone Bay

About this map

The Missouri River defines the northern and eastern boundaries of this South Dakota landscape, where the waters of Lake Francis Case fill the valley floor. The terrain is deeply carved by a network of drainage systems, including Whetstone Cr and its northern branch, N Fork Whetstone Cr. The map reveals a rural infrastructure of township roads and section lines that navigate the high ground between these breaks. Local travel is facilitated by routes such as Mule Head Rd, Cabin Rd, and the Schriever Township Hwy in the southwest corner. The topography is marked by significant elevation changes where the plateau drops toward the river basin, with named tributaries like Burnt Rock Cr and Truesdell Cr cutting through the bluffs. This survey illustrates the modern intersection of water management and traditional township organization along the Gregory and Charles Mix county line.