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2021 Map of Sumdum B-4 SW, 2021 Print
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2021 Map of Sumdum B-4 SW

USGS Topo · Published 2021

About this map

Tongass National Forest dominates this Alaskan coastal reach, where the steep terrain of the Coast Mountains meets the tidal waters of Port Houghton. This modern survey reveals a landscape defined by sharp vertical relief and complex glacial hydrography, notably around the elevated Alice Lake in the northern portion of the quadrangle. The map details the intricate shoreline and several offshore landmasses, including Walter Island and Rabbit Island, which sit at the mouth of the bay. The lack of roads or established settlements emphasizes the remote wilderness character of this region, which remains largely under federal management within the National Forest system. Researchers and cartography enthusiasts can study the precise elevation contours and wetland distributions that characterize this rugged portion of the Petersburg Borough.

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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 B-4 SW 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