1956 Map of Alleman Station

About this map

Cheyenne River Indian Reservation dominates the landscape of this mid-century survey, centered on the expansive waters of Lake Oahe as it reaches into the heart of the high plains. The map records a transition in the Missouri River Basin during the 1950s, showing the vast inundation zones of the reservoir which reshaped the river valley near the junction of Ziebach and Haakon counties. The plateau above the valley is characterized by broad topographic features like Circle P Flats and Mississippi Flats, where the terrain is dissected by deep draws and creek beds.