1982 Map of Glad Valley SE

About this map

Thunder Butte serves as the dominant landmark of this prairie landscape in Ziebach County, overlooking a network of seasonal watercourses. The drainage patterns are defined by the convergence of West Beaver Trap Creek and East Beaver Trap Creek, which carve through the open terrain of the Cheyenne River Indian Reservation. In the southern portion of the map, the more prominent Thunder Butte Creek winds along the base of its namesake height, illustrating the characteristic erosion of the West River region. This 1982 survey reflects the sparse human footprint in this part of South Dakota, where the land remains largely defined by its natural contours and the sectional boundaries of township and range lines.