
The Dishna River meanders through the eastern section of this interior Alaska landscape, creating a complex series of oxbows and abandoned channels. This 2015 survey, published by the U.S. Geological Survey, illustrates the hydrologic patterns of the river basin where it meets Tolstoi Cr in the northern reaches of the quadrangle. The terrain is characterized by subtle elevation changes as the river system works through the low-lying wetlands and alluvial plains. Mapping of this area reflects the ongoing effort to document the remote Yukon-Koyukuk region using contemporary satellite imagery and elevation data, providing a detailed reference of the drainage patterns and township boundaries within the T23S and T24S ranges.
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This is the sole edition of this map. No revisions or reprints were ever made.
1951 · Ophir
USGS Topo · 1:250,000
1954 · Ophir C-3
USGS Topo · 1:63,360
1954 · Ophir B-4
USGS Topo · 1:63,360
1954 · Ophir B-3
USGS Topo · 1:63,360
1954 · Ophir C-4
USGS Topo · 1:63,360
1954 · Ophir
USGS Topo · 1:250,000
2015 · Ophir C-3 SW
USGS Topo · 1:25,000
2015 · Ophir B-4 SE
USGS Topo · 1:25,000
2015 · Ophir C-4 SE
USGS Topo · 1:25,000
2015 · Ophir B-3 SW
USGS Topo · 1:25,000