
Calexico and the southern reaches of the Imperial Valley are defined by a complex, grid-like geometry of water management at the international border. The landscape is a testament to hydraulic engineering, dominated by the massive All-American Canal and its intricate network of primary and secondary channels including the Central Main Canal, Beech Canal, and Briar Canal. These waterways dictate the orientation of the surrounding fields and roads, such as Anza Rd and Correll Rd, which follow the strict township and range lines across the desert floor.
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This is the sole edition of this map. No revisions or reprints were ever made.
1907 · Holtville
USGS Topo · 1:125,000
1915 · El Centro
USGS Topo · 1:125,000
1940 · Brawley
USGS Topo · 1:62,500
1940 · Heber
USGS Topo · 1:62,500
1940 · Alamorio
USGS Topo · 1:62,500
1940 · Calexico
USGS Topo · 1:62,500
1942 · El Centro
USGS Topo · 1:250,000
1943 · Heber
USGS Topo · 1:62,500
1943 · Brawley
USGS Topo · 1:62,500
1943 · Calexico
USGS Topo · 1:62,500