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1989 Map of Borah Peak
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1989 Map of Borah Peak

USGS Topo · Published 1989

About this map

Borah Peak and the high summits of the Lost River Range dominate this 1980s landscape, where deep glacial valleys separate massive mountain blocks. The map reveals a high-altitude ranching and mining environment characterized by broad alluvial fans like Barton Flats and Sunny Bar. Small, isolated settlements such as Gilmore and Nicholia anchor the edges of the Birch Creek Valley, while the Wilbert Mine and Sentinel Mine suggest the region's enduring connection to mineral extraction.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:100,000
Physical Dimensions39.9 x 24.1 inches

Editions of this 1989 Borah Peak Map

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

Historical Maps of Beaverhead County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain