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2023 Map of South Putnam Mountain

Name: 2023 Topographic Map of South Putnam Mountain
Creator: U.S. Geological Survey
Published: 2023
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2023

About this map

The high ridges of the Portneuf Range dominate this Idaho landscape, anchored by the massive profiles of Mt Putnam and South Putnam Mtn. These peaks overlook a complex network of drainage basins and canyons, including the dramatic constriction known as The Narrows along the Ross Fork. This 2023 survey illustrates the modern boundaries and access points within the Caribou National Forest, where a series of primitive trails and forest roads provide the primary infrastructure for navigating the steep terrain.

Water plays a central role in the geography, with Mill Creek, Thirty Day Creek, and McNabb Creek cutting through the slopes. Local travel is defined by historic corridors like Jeff Cabin Rd and the Middlefork Toponce Trl. The map traces the transitions between the high alpine environment of Buckskin Basin and the lower elevations where features like the Smoke Lateral and Farmer Creek emerge, offering a detailed look at the hydrology and topography of southeastern Idaho.