San Cristobal Wash bisects this arid stretch of the Sonoran Desert, carving a wide, sandy path through the San Cristobal Valley. This 2018 topographic survey focuses on the vast, undeveloped landscape of Yuma County, defined by its massive drainage systems and subtle elevation changes across the valley floor. The map captures the geometric precision of the Public Land Survey System, showing the township and range boundaries of t8s r13w, t8s r12w, t9s r13w, and t9s r12w. The lack of permanent structures or roads highlights the environment's character as an expansive corridor for seasonal water flow and desert ecology, rather than a site of human habitation.
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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