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2017 Map of Marshall Peak

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

USGS Topo · Published 2017

About this map

Marshall Peak dominates the high-elevation landscape of central Idaho, where the borders of Elmore and Blaine Counties meet. This 2017 survey details a wilderness environment defined by the headwaters of major drainage systems, notably the S Fork Boise River and the complex network of the Ross Fork and its tributaries. The terrain is divided between the Sawtooth National Forest and the Boise National Forest, with deep drainage features like Eureka Gulch and Jakes Gulch carving into the mountainous ridges.

Infrastructure is minimal in this wilderness, represented primarily by Nat For Dev Rd 79, which provides access to the high basins. For researchers, the map clarifies the precise hydrography of the region, including high-mountain bodies like Perkins Lake and numerous named creeks such as Alturas Lake Cr and Johnson Cr. The map illustrates the convergence of several county lines in the high peaks, marking the remote intersection of Elmore, Blaine, and Camas counties within the Ross Fork Basin.