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2021 Map of Unalaska A-3 NE, 2021 Print
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2021 Map of Unalaska A-3 NE

USGS Topo · Published 2021

About this map

Cape Prominence and Reef Point define the dramatic maritime boundary of this coastal survey in the Aleutians West Census Area. This map captures the jagged coastline where the high elevation terrain abruptly meets the Pacific Ocean. The geography is dominated by deep indentations of the sea, most notably at Usof Bay and Open Bay, which create natural harbors against the steep contours of the land. The mapping illustrates the stark isolation of these points, emphasizing the relationship between the sea and the landmasses of the Unalaska region. While devoid of man-made structures or settlements, the topography reveals the natural navigation landmarks essential for maritime travel in these waters.

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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 Unalaska A-3 NE 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