1953 Map of Seminoe Dam SE

About this map

Seminoe Reservoir dominates this 1950s landscape, its jagged shoreline reflecting a dramatic shift in the North Platte River valley as part of the Missouri River Basin project. Along the north-central shore, the prominent landform of Horse Ridge runs east-to-west, dictating the local drainage patterns of Big Draw and Sip Creek. The area retains a distinct ranching character, centered on family-named sites such as McNees Ranch and Tennant Ranch near the banks of Beaver Creek. Smaller water management features like Red Reservoir and the aptly named Dry Reservoir underscore the necessity of water storage in this high-plains environment. This survey captures a moment when the reservoir was a relatively new addition to a landscape long defined by seasonal creeks and traditional grazing lands.