The Rio Grande cuts through the southwestern corner of this landscape, forming the deep Canon del Rio Grande along the border of Conejos and Costilla Counties. In the eastern San Luis Valley, the small settlement of Eastdale and the village of Jaroso represent the agricultural heart of the region, supported by irrigation infrastructure like the Jaroso Ditch and Anderson Reservoir. The map shows a precise grid of rural roads and residential trails, many named for Southwestern tribes and locations, such as Kaibab Trl and Hovenweep Trl, which connect the namesake Sky Valley Ranch to the broader valley. Elevation is dominated by the prominent Mesita Hill in the northeast, while the southern reaches contain important local sites like the Jaroso Cem. This survey illustrates the persistent pattern of desert farming and ranching in a high-altitude basin defined by its proximity to the water of Costilla Cr.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Raton
USGS Topo · 1:250,000
1954 · Trinidad
USGS Topo · 1:250,000
1955 · Trinidad
USGS Topo · 1:250,000
1958 · Raton
USGS Topo · 1:250,000
1958 · Trinidad
USGS Topo · 1:250,000
1959 · Trinidad
USGS Topo · 1:250,000
1963 · Costilla
USGS Topo · 1:24,000
1963 · Ute Mountain
USGS Topo · 1:24,000
1963 · La Segita Peaks NE
USGS Topo · 1:24,000
1967 · Manassa NE
USGS Topo · 1:24,000