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2017 Map of Tyonek D-6 NE

Name: 2017 Topographic Map of Tyonek D-6 NE
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

The Skwentna River and the Hayes River converge in this remote section of the Matanuska-Susitna Borough, defining a landscape of complex braided river channels and alluvial plains. This 2017 survey captures a wild drainage system where the glacial-fed waters shift across broad, marshy valleys, creating a network of sloughs and sandbars that are characteristic of the region's hydrography. Central to the topography is Porcupine Butte, a prominent elevation that rises sharply above the surrounding lowlands between the major watercourses.

Smaller water bodies such as Red Salmon Lake and Finger Lake are scattered through the terrain, indicating the diverse wetland environments found here. The map is primarily an environmental record, focusing on the natural contours and the intersection of various township lines, including t22n r15w and t21n r14w. This specific combination of high-relief landmarks and broad river deltas provides a clear look at the drainage patterns that dominate this part of the Alaskan interior.