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1979 Map of Tyonek B-1 SE

Name: 1979 Topographic Map of Tyonek B-1 SE
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1980

About this map

Susitna Flats dominates the southwestern portion of this orthophotomosaic, where the complex transition from glacial deposits to the tidal waters of Knik Arm is clearly visible. The landscape is defined by the Elmendorf Moraine, a glacial feature that provides slightly higher ground amidst a dense network of kettle ponds and larger water bodies like Horseshoe Lake and Twin Island Lake. This 1970s perspective captures the area's wilderness character just before more intensive regional development.

Evidence of human activity is sparse but specific, centered on a remote Landing Strip and a rugged Jeep Trail that cuts through the wetlands and moraine. These features indicate the importance of small-craft aviation and off-road access in navigating the Matanuska-Susitna region. The map also includes minor landmarks such as Lost Lake, providing a clear record of the hydrography and terrain as it stood following the 1972 aerial survey.