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1955 Map of Bradfield canal B-4, 1977 Print
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1955 Map of Bradfield canal B-4

USGS Topo · Published 1977

About this map

Tongass National Forest dominates this topographic study of the international boundary between British Columbia and Alaska. Based on 1948 aerial photography and field-checked in the mid-1950s, the map reveals a remote glaciated landscape defined by significant water systems and high summits. The Blue River flows through the eastern sector, while the North Fork and East Fork Bradfield River drain the central and southern reaches. Significant peaks such as Mt Pounder, Mt Lewis Cass, and Mt Cloud serve as fixed points in a territory devoid of roads or permanent settlements at the time of the survey. The northern boundary is precisely delineated by the international line, cutting through the headwaters of the South Fork Craig River.

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Map Details

Date Portrayed1955
Date Published1977
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions18 x 21.7 inches

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain