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1989 Map of Twin Peaks
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1989 Map of Twin Peaks

USGS Topo · Published 1989

About this map

The high ridges of Twin Peaks dominate this 1980s topographic landscape, situated along the boundary of Lemhi and Custer Counties. This terrain is characterized by the expansive Challis National Forest and the protected acreage of the Frank Church River of No Return Wilderness. The map captures a high-altitude network of drainage systems, including Challis Creek and the headwaters of Bear Creek, which feed into Mosquito Flat Reservoir in the southern portion of the quadrangle.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1989 Twin Peaks Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Custer County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain