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2020 Map of Porphyry Peak

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

USGS Topo · Published 2020

About this map

Porphyry Peak rises as the central landmark within the Challis National Forest of Custer County, Idaho. This high-elevation terrain is defined by the White Knob Mountains, where numerous drainages such as Grant Creek, Rock Creek, and Boone Creek carve through the landscape. The south and west of the quadrangle show the drainage systems feeding into the E Fork Big Lost River, a critical water source for the region.

Evidence of seasonal accessibility is noted by the presence of the E Fork Road Copper Basin Road, which includes a specific designation for snow conditions. The area is largely defined by its natural topography and forest service infrastructure, including the Grant Creek Trail and the Garden Creek Run Connector. Notable landforms like Flat Top, Dry Canyon, and the distinct Castle Rock provide recognizable waypoints for those navigating this portion of the interior Idaho wilderness.