2020 Map of Cottonwood Creek

About this map

The Beaverhead Mountains form a dramatic natural boundary in this high-altitude landscape, where the Continental Divide separates the Beaverhead National Forest in Montana from Idaho's Targhee National Forest. This modern survey details a complex network of seasonal drainages, including Eighteenmile Cr, Cottonwood Cr, and Jump Creek, which flow through deep incisions like Ramsey Canyon. The presence of Walters Spring and Breazeale Spring highlights the critical role of water sources in this arid, high-country environment. Traversing the ridges, the Continental Divide National Scenic Trail follows the spine of the continent, offering a window into the remote terrain of the Lemhi Valley region. Access is limited to rugged routes such as 18 Mile Rd and Willow Creek Rd, reflecting the wilderness character of the Montana-Idaho borderlands.