1986 Map of Lake Andes

About this map

The Yankton Indian Reservation dominates the southeastern quadrant of this mid-1980s landscape, illustrating the complex intersection of tribal lands and established prairie townships. The Missouri River forms the primary geographical boundary to the southwest, expanded into the massive Lake Francis Case behind the dam at Fort Randall. This engineering project fundamentally altered the river's original character, creating recreational and wildlife zones like the Karl E Mundt National Wildlife Refuge.