2017 Map of Alexander Mountain

About this map

Lake Koocanusa dominates this landscape, its waters filling the valley between the Purcell Mountains and the high ridges to the east. The reservoir’s irregular shoreline creates distinctive features like Yarnell Island and the confined passage of the Kootenai Narrows. In the southwestern corner of the quadrangle, the Kootenai River continues its course past Big Bend and the mouth of Canoe Gulch. Transportation through this steep terrain is facilitated by the David Thompson Bridge, which provides a vital link across the water. The map details the rugged topography of the Kootenai National Forest, highlighting peaks such as Alexander Mtn and Gopher Hill, alongside an extensive network of forest roads including Boundary Mtn Rd and Canyon Cr Rd. This survey documents a wilderness area shaped by both the natural flow of mountain creeks like Jackson Cr and the significant human impact of large-scale water management.