2012 Map of Glad Valley NW

About this map

Twin Butte Creek and Beef Creek define the drainage patterns of this sparsely settled prairie landscape in Corson County. The map captures a transition in the open range of the Rock Creek District, where the headwaters of Tourney Creek and Line Creek cut through the high plains. Human presence is represented primarily by a grid of rural roads and the diagonal path of Route 20, reflecting the large-scale ranching and land use common to this part of South Dakota in the early twenty-first century. These ephemeral stream beds are critical landmarks for understanding the hydrology and historic land allotments in this northern section of the state.