Monte Vista Canal and the Rio Grande and Piedra Valley Canal dominate the eastern lowlands of this San Luis Valley landscape, illustrating the complex irrigation network vital to Colorado agriculture. The terrain shifts from the intricate water management of the Resettlement Ditch and Sheridan N Ditch to the higher elevations of the west, where Goat Ranch Gulch and Fulcher Gulch carve into the rising slopes. The boundary between Rio Grande and Conejos counties bisects the southern portion of the sheet near The Canyon. This 2013 survey provides a detailed look at the rural infrastructure, showing how natural watercourses like Cat Cr and Rock Cr are augmented by human-made features such as the Terrace Main Canal and Meadow Ditch.
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This is the sole edition of this map. No revisions or reprints were ever made.
1915 · Del Norte
USGS Topo · 1:125,000
1917 · Del Norte
USGS Topo · 1:125,000
1922 · Conejos
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
1961 · Durango
USGS Topo · 1:250,000
1963 · Durango
USGS Topo · 1:250,000
1964 · Monte Vista
USGS Topo · 1:24,000
1966 · Durango
USGS Topo · 1:250,000