1956 Map of Alleman Station

About this map

The Cheyenne River winds through this mid-century landscape, marking a vital boundary line for the Indian Reservation Boundary in central South Dakota. This 1956 survey records a pastoral and ranching environment on the cusp of significant change; much of the river bottom land is noted as being subject to future inundation by the Oahe Reservoir project. The map documents scattered prairie life through family holdings like the Pearman Ranch, Carr Ranch, and Jordan Ranch, alongside local landmarks such as Dupree Ch and Carr Sch. High plains topography is defined by the broad, level stretches of Circle P Flats, Marion Flats, and Mississippi Flats. Numerous seasonal waterways, including Hermaphrodite Creek and Sage Creek, carve into the terrain, illustrating the drainage patterns that define the region's cattle-country character.