The Colorado River carves a path through the borderlands of Arizona and California in this detailed 2018 survey. The landscape is defined by the narrow passage of Topock Gorge, where the water is flanked by striking geological formations such as Cathedral Rock, Pulpit Rock, and Split Rock. Near the northern end of this corridor, the settlement of Topock sits adjacent to the Mohave Valley, serving as a critical crossing point marked by the Red Rock Bridge.
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This is the sole edition of this map. No revisions or reprints were ever made.
1903 · Needles
USGS Topo · 1:125,000
1904 · Needles Special
USGS Topo · 1:125,000
1943 · Topock
USGS Topo · 1:62,500
1950 · Topock
USGS Topo · 1:62,500
1950 · Sawtooth Range
USGS Topo · 1:62,500
1950 · Needles
USGS Topo · 1:62,500
1951 · Topock
USGS Topo · 1:62,500
1951 · Sawtooth Range
USGS Topo · 1:62,500
1952 · Needles
USGS Topo · 1:62,500
1954 · Needles
USGS Topo · 1:250,000