1986 Map of Onida

About this map

Lake Oahe dominates the central landscape of this 1980s-era map, where the impounded Missouri River meets the winding Cheyenne River. The western portion of the map is defined by the high plateaus of Mission Ridge and Orton Flat, punctuated by isolated landmarks like No Heart Butte and Standing Butte. To the east, the grain-farming prairie of Sully County is organized by a rigid grid of roads, centered on the county seat at Onida and the small agricultural hubs of Agar and Gorman. The Chicago and North Western railroad line cuts through this plains country, providing a vital link for the scattered settlements. Extensive recreational and conservation lands, including the Sutton State Game Production Area and the Okobojo Recreation Area, border the reservoir, reflecting the region's mid-century transition toward water-based recreation and wildlife management.