
Trimble River winds through the southwestern corner of this high-latitude Alaskan landscape, carving through a region defined by substantial elevation changes and glacial-fed drainage. The northern reaches are anchored by Dickason Mtn, a prominent peak situated in Township 21 North, Range 14 West. The map captures a largely untouched wilderness within the Matanuska-Susitna Borough, where the intricate contour intervals reveal a complex network of ridges and basins. This data, synthesized from imagery and hydrographic datasets, documents the precise state of the terrain and watercourses in the decade following 2010, offering a record of the natural topography in an area without developed road networks or established settlements.
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This is the sole edition of this map. No revisions or reprints were ever made.
1949 · Tyonek
USGS Topo · 1:250,000
1951 · Tyonek
USGS Topo · 1:250,000
1954 · Tyonek C-5
USGS Topo · 1:63,360
1954 · Tyonek D-5
USGS Topo · 1:63,360
1958 · Tyonek C-6
USGS Topo · 1:63,360
1958 · Tyonek D-6
USGS Topo · 1:63,360
1958 · Tyonek
USGS Topo · 1:250,000
1965 · Tyonek
USGS Topo · 1:250,000
2017 · Tyonek C-6 NE
USGS Topo · 1:25,000
2017 · Tyonek D-5 NW
USGS Topo · 1:25,000