The Rio Grande meanders through this agricultural landscape in Alamosa County, Colorado, defining a complex system of water management essential to the high desert valley. The Mount Pleasant School stands as a focal point for the local rural community, surrounded by a dense grid of irrigation infrastructure. This network includes major waterways such as the San Luis Valley Canal, the Costilla Canal, and the Excelsior Ditch. Smaller arteries like the Hooper Lateral and Central Lateral crisscross the terrain, following the section lines of the rectangular survey system. The engineering of the landscape is further evidenced by drainage features like the Rio Grande Drain and Bowen Drain, which work in tandem with the supply canals to manage the basin's hydrology. This survey illustrates the intricate relationship between the river's natural course and the human-made diversions that have sustained local ranching and farming since the early settlement period.
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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
1954 · Trinidad
USGS Topo · 1:250,000
1955 · Trinidad
USGS Topo · 1:250,000
1958 · Trinidad
USGS Topo · 1:250,000
1959 · Trinidad
USGS Topo · 1:250,000