San Cristobal Valley dominates this landscape in Yuma County, characterized by a desert basin defined by the gradual drainage of the San Cristobal Wash. The map reveals a highly structured environment partitioned by the Public Land Survey System, with township boundaries for t8s r13w, t8s r12w, and their southern counterparts creating a geometric grid across the arid terrain. This 2014 survey documents the subtle elevation changes within the valley floor, where the dry wash system serves as the primary topographical feature in an otherwise sparse and open expanse of the Arizona desert.
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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