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2021 Map of Petersburg A-3 NW, 2021 Print
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2021 Map of Petersburg A-3 NW

USGS Topo · Published 2021

About this map

Tongass National Forest land dominates this maritime survey, illustrating the complex archipelago southeast of Zarembo Island. The map focuses on the navigationally significant Kashevarof Passage and the numerous small landmasses that dot the waterway. In the north, Shrubby Island sits as a central feature, surrounded by hazards such as Point Nesbitt and the submerged Nesbitt Reef. Further south, the Kashevarof Islands and Blashke Islands form a intricate coastal barrier. This 2021 study documents the precise shoreline and bathymetric interfaces of these undeveloped islands, including East Island, West Island, and Bluff Island, showing the modern boundaries of the national forest across this uninhabited island cluster.

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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 Petersburg A-3 NW 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