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2021 Map of Sumdum D-4 NE, 2021 Print
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2021 Map of Sumdum D-4 NE

USGS Topo · Published 2021

About this map

Sawyer Glacier dominates the central terrain of this high-latitude region within the Tongass National Forest. The landscape is defined by extreme elevations and glacial activity, with Mt Hill standing as a prominent landmark along the international boundary. This border, separating the United States and Canada, cuts diagonally across the northeastern corner of the map. The topography illustrates the complex relationship between maritime climate and ice-field geography, where steep mountain ridges give way to massive ice sheets and drainage basins. Surveyed in the early 21st century, the map details the precise alignment of the frontier and the extent of protected forest lands in this part of the Alaska Panhandle.

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Map Details

Date Portrayed2021
Date Published2021
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:25,000
Physical Dimensions24 x 29 inches

Editions of this 2021 Sumdum D-4 NE Map

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

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain