McIntyre Ridge and the heights of Rattlesnake Hill overlook an intricate system of water management in this 2016 survey of Saguache County. The landscape is defined by the transition from the high northern gulches like Proffit Gulch and McIntyre Canyon down into the expansive wetlands of the San Luis Valley. This lower terrain is crisscrossed by an engineering network essential to the region's agricultural history, including the Taylor Ashley Ditch, the Turnbull Lungren Ditch, and the significant Rio Grande Canal.
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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
1945 · Durango
USGS Topo · 1:250,000
1953 · Durango
USGS Topo · 1:250,000
1954 · Durango
USGS Topo · 1:250,000
1954 · Trinidad
USGS Topo · 1:250,000
1954 · Pueblo
USGS Topo · 1:250,000
1955 · Trinidad
USGS Topo · 1:250,000
1956 · Montrose
USGS Topo · 1:250,000
1957 · Pueblo
USGS Topo · 1:250,000