
Sevenmile Plaza serves as the primary landmark in this agricultural corridor of the San Luis Valley, situated along the northern banks of the Rio Grande. The landscape is defined by an intricate network of irrigation systems essential to the local high-desert economy, featuring the Farmers Union Canal, the Monte Vista Canal, and the Prairie Ditch. These waterways, along with structures like Rio Grande Lateral Number 1 and Raney Ditch, demonstrate the complex water management required to support the large rectangular plots that dominate the valley floor.
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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
1961 · Durango
USGS Topo · 1:250,000
1963 · Durango
USGS Topo · 1:250,000
1964 · Sevenmile Plaza
USGS Topo · 1:24,000
1964 · Monte Vista
USGS Topo · 1:24,000
1966 · Durango
USGS Topo · 1:250,000