2017 Map of Moreau SE

About this map

Lake Oahe dominates this central South Dakota landscape, where the Missouri River valley was transformed into a massive reservoir. Along the western banks in Dewey Co, the terrain is defined by intricate coulees and draws that feed into the main body of water, including Three Legs Cr and Fielder Cr. The map illustrates the contemporary shoreline and the complex topography of the Missouri Plateau, showing how the inundated river valley follows the county line between Dewey and Walworth Co. This 2017 survey captures the intersection of several townships, including t16n r31e, t15n r31e, t122n r78w, and t121n r78w, documenting the modern land management boundaries in a region where the water level of the lake dictates the accessible geography.