2020 Map of Rough Mountain

About this map

Rough Mtn anchors the high ground of this high-desert Owyhee County landscape, where water sources dictate the geography of human transit. The map reveals a network of vital watering points such as Lower Birch Spring, Horsehead Spring, and Half Moon Spring, which likely served as critical stops for livestock and travelers in this arid environment. The terrain is marked by significant drainages and passes, including Little Half Moon Pass and Half Moon Pass, providing natural corridors through the varied topography. This 2020 survey documents contemporary access via Mud Flat Rd and Missile Base Rd, reflecting both historical grazing routes and modern land use. The presence of features like Vinson Wash and Twentymile Gulch further illustrates the complex drainage systems that define this remote section of southwestern Idaho.