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1989 Map of Unalaska B-1
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1989 Map of Unalaska B-1

USGS Topo · Published 1989

About this map

Unalaska Island and Sedanka Island dominate this coastal survey of the Aleutian chain, separated by the precarious waters of Narrow Straight. The topography is defined by steep volcanic shorelines and deep inlets like Udagak Bay and Anchor. This 1989 provisional edition, based on aerial photography from the early 1980s, captures a wilderness landscape devoid of established roads or trails. Instead, the area is oriented around maritime navigation points such as Passage Point and the transition into the Pacific Ocean. This map is particularly useful for maritime historians and those studying the remote geography of the Aleutians West Census Area before modern digital updates.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions18 x 21.8 inches

Editions of this 1989 Unalaska B-1 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