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1955 Map of Bradfield canal B-3, 1974 Print
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1955 Map of Bradfield canal B-3

USGS Topo · Published 1974

About this map

The Tongass National Forest dominates this mid-century topographic study, capturing the wilderness interface where the Blue River and Unuk River carve through the borderlands between Alaska and British Columbia. This survey, based on 1948 aerial photography, provides a detailed look at the drainage patterns and glaciated terrain of the Coast Mountains before later environmental shifts. High peaks like Mt Stoeckl and Dickins Pk overlook a complex landscape of Crevasses and geothermal history indicated by the Lava Fork. The presence of Blue Lake and the steep walls of First Canyon illustrate the dramatic relief of this remote boundary region. Geologists and local historians can trace the intricate network of Trails and the natural boundary lines established between the Canada United States border and Albert Ridge.

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Map Details

Date Portrayed1955
Date Published1974
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions18.1 x 21.7 inches

Editions of this 1955 Bradfield canal B-3 Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain