
The Colorado River serves as the central artery for this borderland, separating the California and Arizona state lines. On the Arizona side, the town of Parker is organized around a dense grid of streets like W Arizona Ave and S Navajo Ave, anchored by the La Paz County Courthouse. The local economy and infrastructure are clearly defined by the river’s water management systems, including the Main Canal, Lateral Nineteen R, and the massive Colorado River Aqueduct which draws from the river to the north. Across the water in California, the settlements of Earp and Big River sit at the edge of the Mojave Desert. To the north, the terrain shifts abruptly into the Whipple Mountains, where the Whipple Mountain Tunnel facilitates the transport of water through the high desert peaks.
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This is the sole edition of this map. No revisions or reprints were ever made.
1911 · Parker
USGS Topo · 1:125,000
1943 · Giers Basin
USGS Topo · 1:62,500
1943 · Whipple Mts.
USGS Topo · 1:62,500
1943 · Parker
USGS Topo · 1:62,500
1949 · Parker
USGS Topo · 1:62,500
1950 · Parker Dam Area
USGS Topo · 1:62,500
1950 · Parker
USGS Topo · 1:62,500
1950 · Whipple Mts
USGS Topo · 1:62,500
1952 · Whipple Mts
USGS Topo · 1:62,500
1954 · Needles
USGS Topo · 1:250,000