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1979 Map of Tyonek A-1 NW, 1993 Print
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1979 Map of Tyonek A-1 NW

USGS Topo · Published 1993

About this map

Fire Island sits at the strategic convergence of the Alaskan coast where the waters of the Cook Inlet split into the Knik Arm and Turnagain Arm. This 1979 survey, updated in the early 1990s, documents the maritime environment and low-lying topography of the Susitna Flats to the north, much of which is protected within the Susitna Flats State Game Refuge. The island itself is marked by technical infrastructure including a Radio Facility and a Heliport, reflecting its role in regional communications and aviation near Anchorage. The shifting nature of the glacial silt and tides is evident in the expansive Fire Island Shoal and West Point Shoal, which create a complex navigation environment around Shelter Bay.

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Map Details

Date Portrayed1979
Date Published1993
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:25,000
Physical Dimensions22 x 27 inches

Editions of this 1979 Tyonek A-1 NW Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain