Coxcomb Mountains dominate this high-desert landscape in eastern Riverside County, where the stark topography of the Mojave and Colorado deserts meet. This modern survey illustrates the critical water and power infrastructure that sustains Southern California, most notably the Colorado River Aqueduct as it transitions from open channel into the Coxcomb Tunnel. A significant portion of the sheet is protected within Joshua Tree National Park, preserving the undisturbed terrain south of the mountains. The vast, arid drainage of Pinto Wash cuts across the western portion of the quadrangle, while the diagonal path of Rice Rd provides the primary transit corridor through this remote region, following the natural contours of the valley floor.
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This is the sole edition of this map. No revisions or reprints were ever made.
1943 · Coxcomb Mountains
USGS Topo · 1:62,500
1944 · Chuckwalla Mountains
USGS Topo · 1:62,500
1944 · Coxcomb Mountains
USGS Topo · 1:62,500
1952 · Sidewinder Well
USGS Topo · 1:62,500
1952 · Palen Mountains
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1955 · Salton Sea
USGS Topo · 1:250,000
1959 · Salton Sea
USGS Topo · 1:250,000
1963 · Salton Sea
USGS Topo · 1:250,000
1963 · Chuckwalla Mountains
USGS Topo · 1:62,500