Joshua Tree National Park occupies the southern reaches of this landscape, where the high desert terrain transitions into the steep slopes of the Coxcomb Mountains. This 2015 survey reveals the critical water infrastructure crossing the arid Mojave Desert, most notably the Colorado River Aqueduct. A significant engineering point, the West Iron Portal, is visible in the northeast corner where the aqueduct interfaces with the mountain terrain. The map also delineates the administrative boundary between San Bernardino County and Riverside County, illustrating how this political line cuts through the open desert and protected parklands. This document provides a clear view of the intersection between industrial water transport and federally protected wilderness in the early 21st century.
12 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.
1942 · Amboy
USGS Topo · 1:250,000
1943 · Amboy
USGS Topo · 1:250,000
1943 · Cadiz Valley
USGS Topo · 1:62,500
1943 · Iron Mountains
USGS Topo · 1:62,500
1943 · Coxcomb Mountains
USGS Topo · 1:62,500
1944 · Coxcomb Mountains
USGS Topo · 1:62,500
1952 · Palen Mountains
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1954 · Needles
USGS Topo · 1:250,000
1955 · Salton Sea
USGS Topo · 1:250,000