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2021 Map of Sitka B-5 NW

Name: 2021 Topographic Map of Sitka B-5 NW
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

Chichagof Island terrain dominates this coastal study, where the intricate waterways of the Tongass National Forest meet the Gulf of Alaska. The map documents a complex maritime landscape defined by narrow passages and hazardous shoals, including the strategically critical Peril Strait and the churning waters of Sergius Narrows. These channels have long served as vital corridors for navigation through the Alexander Archipelago, where tidal currents necessitate precise knowledge of features like Rapids Island and Liesnoi Shoal.

Coastal geography is rendered in high detail, from the sheltered waters of Deep Bay and Bear Bay to prominent maritime landmarks such as Pinta Head and Shoal Point. The inclusion of Adams Channel and Canoe Pass highlights the smaller-scale routes used by local mariners to bypass more exposed stretches of the coastline, while the vast timberlands of the Tongass NF extend across the steep topography of the interior.