2017 Map of Jumbo Mountain

About this map

The Continental Divide defines the southwestern boundary of this high-altitude landscape, where the borders of Beaverhead National Forest and Salmon National Forest meet at the Montana-Idaho line. The terrain is characterized by prominent peaks including Jumbo Mtn in the west and Hirschy Mtn to the south, with drainage basins feeding numerous alpine creeks. Water is a central feature of the topography, from the centrally located Twin Lakes to the small Ovis Lake tucked into the northern slopes. A network of Forest Service routes, such as Twin Lakes Rd and roads like 183, provides access to these remote reaches. The map documents a classic wilderness interface where Little Moosehorn Cr, Rock Cr, and Big Lake Cr carve through the high country, illustrating the complex hydrology of the Bitterroot Range before these waters descend toward the larger valley systems.