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1951 Map of Seward A-4

Name: 1951 Topographic Map of Seward A-4
Creator: U.S. Geological Survey
Published: 1974
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1974

About this map

The massive ice flows of Chenega Glacier, Tiger Glacier, and Bainbridge Glacier dominate the western shores of this 1951 coastal survey, terminating at the waters of Port Bainbridge and Icy Bay. This maritime landscape is defined by its deep fjords and intricate waterways, including the narrow Bainbridge Passage which separates the mainland from Bainbridge Island.

Triangulation stations like VABM Nassau and VABM Fiord mark the high peaks above Nassau Fiord, while the southern reaches of the map show the convergence of Prince of Wales Passage near Evans Island. The presence of the Seward Base Line cutting through the center of the sheet indicates the foundational survey work required to chart this complex shoreline, providing a precise record of the coastline before the significant tectonic shifts caused by the 1964 earthquake.