1982 Map of Glad Valley NW

About this map

Grand River National Grassland and the northern reaches of the Standing Rock Indian Reservation converge in this corner of the Dakota plains. The landscape is defined by its administrative boundaries, where Ziebach, Corson, and Perkins counties meet amidst a complex network of federal and tribal lands. The topographic prominent feature, Twin Butte, rises above the surrounding drainage basins of Beef Creek and Twin Butte Creek. This 1980s-era survey documents a sparsely populated ranching and grassland environment, tracing the Cheyenne River Indian Reservation Boundary as it cuts across the open terrain. The map provides a detailed record of the unimproved roads and survey lines that organized this remote region, offering a clear view of the land-use patterns that persist across the Grand River valley watershed and Tourney Creek.