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1955 Map of Dubois

Name: 1955 Topographic Map of Dubois
Creator: U.S. Geological Survey
Published: 1978
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1978

About this map

The Continental Divide zigzags across this high-country landscape, defining the rugged border between Idaho and Montana during the mid-1950s. The Union Pacific railroad serves as the primary corridor for commerce and travel, connecting small mountain settlements like Monida, Spencer, and Dubois. This region is a complex of high peaks and protected lands, featuring the massive Lost River Range and Lemhi Range, which include notable summits like Borah Peak and Leatherman Peak.

Large-scale land use is evident in the sprawling National Reactor Testing Station in the south and the United States Sheep Experiment Station near the Idaho-Montana line. Water management is central to the valley economies, shown through the presence of the Lima Reservoir and Clark Canyon Reservoir. The map also details the extensive boundaries of the Salmon National Forest, Challis National Forest, and TARGHEE NATIONAL Forest, illustrating the vast reach of federal forest management in the era.