The Iron Mountains dominate this corner of the Mojave Desert, serving as a stark topographic divide between the Cadiz Valley to the west and the Ward Valley to the east. This 2018 survey reveals the critical infrastructure supporting Southern California's water needs, most notably the path of the Colorado River Aqueduct. The aqueduct cuts across the southern portion of the range, disappearing into the subterranean passage of the Iron Mountain Tunnel. This engineering feat represents a vital link in the regional water delivery system. On the surface, the landscape remains largely undeveloped, defined by steep contour lines and the utility corridor of Power Line Rd tracking along the eastern base of the peaks.
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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 Lake
USGS Topo · 1:62,500
1943 · Cadiz Valley
USGS Topo · 1:62,500
1943 · Iron Mountains
USGS Topo · 1:62,500
1954 · Needles
USGS Topo · 1:250,000
1956 · Needles
USGS Topo · 1:250,000
1956 · Milligan
USGS Topo · 1:62,500
1956 · Iron Mountains
USGS Topo · 1:62,500
1956 · Cadiz Lake
USGS Topo · 1:62,500