2015 Map of Moreau

About this map

Moreau sits near the northern shoreline of Lake Oahe in Dewey County, where the landscape is defined by the dendritic drainage patterns of the Missouri River plateau. This 2015 survey reveals a terrain deeply etched by seasonal waterways, most notably the winding paths of W Fork No Mouth Cr and E Fork No Mouth Cr which converge as they move toward the reservoir. The map illustrates the sparsely populated nature of District 6, with transportation limited to routes like Blackfoot Rd and BIA-809. The elevation contours highlight the dramatic breaks and bluffs that overlook the lake, while smaller tributaries such as Hokshela Cr and E Fork Beaver Cr carve through the western reaches of the quadrangle. It is a detailed look at the rural intersection of tribal land management and modern hydrologic engineering on the South Dakota plains.