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1989 Map of Unimak D-1
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1989 Map of Unimak D-1

USGS Topo · Published 1989

About this map

Unimak Island and the expansive Aleutian Islands Wilderness dominate this late-twentieth-century topographical survey. The landscape is characterized by its complex coastal hydrology, where the Bering Sea meets the northern shores of the archipelago at Cape Lapin. Further inland, the map details significant brackish water systems including Christianson Lagoon and Peterson Lagoon, which are separated from the open waters of Urilia Bay by narrow coastal strips. This environment, captured in the 1980s, reflects a territory largely untouched by industrial infrastructure, emphasizing natural features like Twin Peak and the submerged Slime Bank in Bristol Bay. The lack of roads or established settlements on the sheet underscores the remote nature of the Aleutians East Borough during this period.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions18 x 21.7 inches

Editions of this 1989 Unimak D-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