1966 Map of Pollock NW

About this map

Oahe Reservoir dominates this mid-1960s landscape, illustrating the transformative impact of the Pick-Sloan Plan on the northern plains. This survey documents the inundation of the Missouri River valley, where the rising waters reshaped the borders of Campbell and Corson Counties. The Standing Rock Indian Reservation Boundary is clearly delineated along the western reaches of the reservoir, marking the intersection of tribal lands and the developing water management infrastructure of the era. On the higher ground to the northeast, the presence of the Dale Cem near the North Dakota and South Dakota state line serves as a persistent link to early rural settlement patterns that predated the reservoir. Tracing south, Hunkpapa Creek feeds into the pool, cutting through the segmented terrain of the Missouri Plateau.