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1951 Map of Seward B-4

Name: 1951 Topographic Map of Seward B-4
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

The Sargent Icefield dominates the western interior of this coastal landscape, feeding a complex network of massive ice flows toward the sea. These include the prominent Contact Glacier, Nellie Juan Glacier, and the Princeton Glacier, which descend toward the deep inlets of Prince William Sound. The topographic record illustrates the direct relationship between these glacial systems and the carved waterways of Blue Fiord and Nassau Fiord.

Navigation along the eastern shore is defined by Dangerous Passage, which separates the mainland from Chenega Island. This maritime corridor provides access to the sheltered waters of Jackpot Bay and the chain of Jackpot Lakes inland. The presence of smaller landmasses like Jackpot Island and Verdant Island in the southern reaches of Icy Bay indicates the complex bathymetry of this sub-arctic environment, where the Ultramarine Glacier and Chenega Glacier meet the tide.