1950 Map of Upper Red Rock Lake

About this map

The Centennial Valley high country is captured here during the post-war era, showing a landscape defined by the Red Rock Lakes National Wildlife Refuge and large-scale ranching operations. The expansive waters of Upper Red Rock Lake and Swan Lake dominate the western flats, while the Continental Divide forms a sharp natural boundary to the south. This 1950 survey documents a network of family-owned holdings like the Hanson Ranch, Cook Sheep Ranch, and Orr Ranch that existed alongside emerging recreation spots such as Selby Resort on the shores of Elk Lake. Beyond the valley floor, the map details the transition into the Beaverhead National Forest, where pack trails and jeep trails wind toward high-elevation landmarks like Mt Jefferson and Nemesis Mtn, illustrating the dual uses of the land for livestock grazing and wilderness access.