De la Luz Cem and the small settlement of Centro anchor this high-altitude landscape in the southern San Luis Valley. This survey documents a complex network of water management, where the Alamosa River and its tributaries are harnessed by numerous irrigation projects like the Valdez Ditch Number 5, Terrace Main Canal, and Viejo Ditch. This infrastructure highlights the agricultural reliance on runoff from the nearby peaks, such as Chiquito Peak. To the south, the topography deepens into notable formations like Ra Jadero Canyon and Trujillo Canyon, which channel seasonal flows into La Jara Cr. The abundance of small reservoirs, including Pine Squirrel Reservoir, Wren Reservoir, and Dodo Reservoir, underscores the critical importance of water storage in this arid, high-country environment where ranching and farming intersect with the local terrain.
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This is the sole edition of this map. No revisions or reprints were ever made.
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
1966 · Durango
USGS Topo · 1:250,000
1967 · La Jara Canyon
USGS Topo · 1:24,000
1967 · Centro
USGS Topo · 1:24,000
1967 · Terrace Reservoir
USGS Topo · 1:24,000