San Cristobal Wash carves through the arid landscape of Yuma County, marking the primary drainage in this desert expanse. The region is characterized by sparse water sources, represented here by isolated points such as Pimeria Well and Garcia Well. These features indicate the vital infrastructure required for human activity and livestock in an otherwise dry environment. The mapping reflects a period of modern geospatial documentation by the U.S. Geological Survey, focusing on the natural topography and the limited but essential hydraulic landmarks that define the territory north of the Mohawk Mountains.
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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