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2017 Map of Sourdough Peak

Name: 2017 Topographic Map of Sourdough Peak
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Sourdough Peak rises as a central landmark within the high-elevation wilderness of the Nez Perce National Forest in northern Idaho. This 2017 survey details a landscape defined by sharp ridges and a dense network of drainages that feed the region's river systems. Named landmarks like Baking Powder Mtn, Bull Elk Ridge, and Dome Hill reflect the rugged character of the Clearwater Mountains, while the presence of Sourdough Rd marks one of the few developed access points through this backcountry terrain.

The map records an intricate hydrological system where creeks like Snoose Cr, Kentucky Cr, and Twin Lakes Cr flow through deep drainages. These watercourses were critical to early forest management and the local mining and trapping history of Idaho County. This topographical study captures the intersection of designated forest boundaries, such as t27n r5e, and natural features like Bear Grass Ridge, documenting the state of this protected forest landscape in the early 21st century.