The Colorado River and the Gila River meet in this landscape defined by early 20th-century water management and military operations. The Laguna Dam stands as a central landmark, once serving as the first dam on the Colorado River to provide irrigation for the North Gila Valley. This 2018 survey reveals a complex network of engineering, including the Gila Main Canal and the massive All-American Canal skirting the Chocolate Mountains. To the east, the Laguna Army Airfield (Yuma Proving Ground) occupies a significant portion of the desert floor, reflecting the area's continued strategic importance.
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This is the sole edition of this map. No revisions or reprints were ever made.
1903 · Yuma
USGS Topo · 1:125,000
1905 · Yuma
USGS Topo · 1:125,000
1926 · Fortuna
USGS Topo · 1:62,500
1929 · Fortuna
USGS Topo · 1:62,500
1929 · Laguna
USGS Topo · 1:62,500
1940 · Yuma
USGS Topo · 1:62,500
1942 · Yuma
USGS Topo · 1:250,000
1943 · Laguna
USGS Topo · 1:62,500
1945 · Picacho Peak
USGS Topo · 1:62,500
1945 · Yuma
USGS Topo · 1:62,500