2017 Map of Three Sisters

About this map

The Lewis and Clark Range forms the backbone of this high-elevation landscape, where the administrative boundary between Flathead National Forest and Lewis & Clark National Forest follows the jagged ridgeline. This divide separates the watershed of the Spotted Bear River and its tributaries, like Goat Cr and Christopher Cr, from the eastern slopes. Distinctive peaks such as Hahn Peak and the namesake Three Sisters define the verticality of the terrain, while isolated water bodies like Hart Lake and Lake Quiet occupy the high basins. The drainage patterns of S Fork Red Shale Cr and Baldy-Bear Cr reflect the complex topography that has long challenged travel and surveying in this corner of the Rockies.