The Colorado River defines the border between California and Arizona as it flows south toward the Topock Marsh, marking a point where water management and desert infrastructure converge. The landscape is dominated by the massive relief of the Sacramento Mountains and Whale Mtn, cut by prominent drainage features like Bat Cave Wash and Mohave Wash. This modern survey illustrates the persistent importance of transportation corridors in this arid region, showing the routes of US Rte 95 and HST Rte 66 as they navigate the basin.
26 named features on this map. Tap any name to fly to it.
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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