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2017 Map of Twin Sisters

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

USGS Topo · Published 2017

About this map

Twin Sisters stands as a prominent landmark on this 2017 survey, marking the high country where the boundaries of Gem, Adams, and Washington Counties converge. The landscape is defined by the high divides of Payette Ridge and Third Fork Ridge, which separate the drainages of the Little Weiser River and Squaw Creek. This territory is primarily managed land, split between the Payette National Forest and Boise National Forest.

A network of Forest Service routes, including Squaw Creek Rd and Little Weiser Rd, provides access to remote points like Mill Creek Summit and Rammage Meadows. The map details numerous smaller geographic features used by hunters and ranchers, such as Carson Gulch, Smith Gulch, and Buck Canyon. This high-elevation topography reflects the mid-20th-century forest management and recreational patterns typical of the Idaho backcountry.