
The Rio Blanco and its drainage network define this high-altitude landscape in the mid-1980s, revealing a terrain managed for both wilderness preservation and water infrastructure. Within the San Juan National Forest, the Blanco Tunnel and Blanco Dam Gaging Sta point to the sophisticated hydrological engineering required to move water through the San Juan range.
37 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1913 · Summitville
USGS Topo · 1:125,000
1915 · Summitville
USGS Topo · 1:125,000
1945 · Durango
USGS Topo · 1:250,000
1953 · Durango
USGS Topo · 1:250,000
1954 · Durango
USGS Topo · 1:250,000
1957 · Chromo
USGS Topo · 1:62,500
1957 · Wolf Creek Pass
USGS Topo · 1:62,500
1957 · Chama Peak
USGS Topo · 1:62,500
1961 · Durango
USGS Topo · 1:250,000
1963 · Durango
USGS Topo · 1:250,000