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2017 Map of Petersburg A-3 SE

Name: 2017 Topographic Map of Petersburg A-3 SE
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Coffman Cove anchors the southwestern corner of this coastal landscape, situated along the shoreline of the Tongass National Forest. The map documents the intricate archipelago and maritime passages of the Clarence Strait and the broader Gulf of Alaska. A clear administrative boundary bisects the waters, marking the line between Wrangell Borough and the Prince of Wales-Hyder Census Area.

Maritime navigation is the primary focus of the eastern half of the sheet, which features a dense chain of landforms including Marsh Island, the Screen Islands, and Lincoln Island. On the mainland, the Coffman Cove Loop provides the only significant terrestrial infrastructure, winding near the mouth of Dog Cr. The interplay between the protected cove and the exposed rocks like Lincoln Rock and Deichman Rock illustrates the navigational complexity of this portion of the Alexander Archipelago.