2020 Map of Sourdough Peak

About this map

Nez Perce National Forest defines the character of this Idaho County landscape, which is marked by a complex system of ridges and high mountain peaks. High points like Sourdough Peak and Baking Powder Mtn overlook a dense network of watercourses, including the headwaters of Johns Cr and the winding Frank Brown Cr. The terrain is characterized by steep elevation changes, with named landforms such as Blue Ridge, Bull Elk Ridge, and Bear Grass Ridge providing significant navigational landmarks. Transportation through this remote wilderness is sparse, centered primarily on the winding Sourdough Rd in the northeastern section. Small tributaries like Kentucky Cr and Twin Lakes Cr feed into the larger creek systems, illustrating the area's role as a vital watershed. This modern survey reflects the enduring wildness of the region, where land management boundaries like T28N R5E and T27N R5E delineate vast stretches of undeveloped forest land.