San Cristobal Valley occupies the southwestern corner of this desert landscape, characterized by the expansive arid flats of Yuma County. To the northeast, the Aztec Hills rise from the basin floor, while the more significant elevation of the Aguila Mountains dominates the southeastern quadrant. This 2018 survey detail provides a clear look at the Public Land Survey System grid, including townships t8s r12w, t8s r11.5w, t8s r11w, t9s r12w, t9s r11.5w, and t9s r11w. The area is marked by a distinct lack of permanent surface water or human settlements, typical of the remote desert interior of the Arizona-Mexico borderlands where the terrain is shaped primarily by ephemeral drainage patterns and isolated rocky outcrops.
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This is the sole edition of this map. No revisions or reprints were ever made.
1927 · Aguila Mountains
USGS Topo · 1:48,000
1927 · Kim
USGS Topo · 1:62,500
1929 · Aztec
USGS Topo · 1:62,500
1930 · Aguila Mountains
USGS Topo · 1:62,500
1930 · Stoval
USGS Topo · 1:62,500
1931 · Kim
USGS Topo · 1:62,500
1950 · Stoval
USGS Topo · 1:62,500
1950 · Aztec
USGS Topo · 1:62,500
1953 · Ajo
USGS Topo · 1:250,000
1957 · Ajo
USGS Topo · 1:250,000