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2020 Map of Obsidian

Name: 2020 Topographic Map of Obsidian
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Sawtooth Valley serves as the central corridor for this high-altitude landscape, where the Salmon River flows north through a mix of open meadows and timbered forest. The small settlement of Obsidian is positioned along the river, marking a point of human presence amidst the expansive protected lands of the Challis National Forest and Sawtooth National Forest. The map detail shows a transition from the level terrain of Decker Flat to the rising elevations of the White Cloud Peaks and Redfish Ridge.

A network of mountain roads and forest routes, including the 4th of July Creek Rd and Valley Rd, provides access to the backcountry drainage systems of Williams Creek and Hell Roaring Creek. To the southwest, Yellow Belly Lake sits at the base of steep slopes, illustrating the typical alpine hydrology of Custer County. The map documents the existing land management boundaries and seasonal access roads that define recreation and resource use in the modern era.