1967 Map of Mobridge NE

About this map

Lake Oahe dominates this landscape, having transformed the Missouri River valley into a massive reservoir by the late 1960s. The water straddles the county line between Campbell Co and Corson Co, with large areas noted as subject to controlled inundation. To the west, the Standing Rock Indian Reservation Mission occupies the high ground above the river’s western shore. This survey provides a distinct record of the reservoir's early footprint, showing how the rising waters redefined the shoreline and influenced the path of local drainages like Locke Creek. The map carefully delineates the Indian Reservation Boundary as it interacts with the newly formed shoreline and internal river channels, marking a period of significant geographical and administrative transition for the Dakotas.