2021 Map of Threemile Butte

About this map

The Cheyenne River winds through this high-plains landscape, where the drainage patterns of Sevenmile Cr, Crooked Cr, and Boggy Cr define the cattle-country topography of Niobrara County. This modern survey illustrates the enduring agricultural character of the region, anchored by land-management features like the Thunder Basin National Grassland and water-control structures such as the Hanson Reservoir. High points like Threemile Butte and Sheldon Hill serve as prominent landmarks amidst a network of draws, including Rock Corral Draw and Whitney Draw. The prevalence of named reservoirs, including New Deal Number 1 Reservoir and Seven Mile-Number 1 Reservoir, speaks to the critical importance of water conservation in this arid Wyoming territory, while the road network remains focused on rural access through routes like Cheyenne River Rd.