2015 Map of Four Bear Creek

About this map

The Missouri River corridor dominates this landscape at the intersection of Dewey, Potter, and Walworth Counties. This contemporary survey illustrates the vast expanse of Lake Oahe, the reservoir formed by the damming of the Missouri, which has reshaped the river valley into a complex system of inlets and flooded draws. Several significant drainages, including Four Bear Creek, Buffalo Cr, and Buck Cr, feed into the lake from the west. The map provides a clear look at the modern rural infrastructure, showing local routes like Bia-810 and Bia-808 that navigate the high ground above the water's edge. The detailed topography reveals the dramatic elevation changes between the prairie uplands and the submerged river valley, reflecting the significant hydrological changes that have defined this region since the mid-20th century.