Middle Mountains rise through the central portion of this arid landscape, characterized by the intricate drainage systems of Indian Wash and Los Angeles Wash. This 2011 survey reveals the significant presence of the Yuma Proving Ground, a massive military installation that dominates the eastern half of the quadrangle. The primary transportation artery is State Route 95, which runs north-south through the desert terrain. The map captures a largely uninhabited section of La Paz County, defined by military boundaries and natural desert hydrology rather than civilian settlement.
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This is the sole edition of this map. No revisions or reprints were ever made.
1929 · Laguna
USGS Topo · 1:62,500
1939 · Red Hill
USGS Topo · 1:62,500
1942 · Yuma
USGS Topo · 1:250,000
1942 · Blythe
USGS Topo · 1:250,000
1943 · Laguna
USGS Topo · 1:62,500
1954 · El Centro
USGS Topo · 1:250,000
1954 · Salton Sea
USGS Topo · 1:250,000
1954 · Red Hill
USGS Topo · 1:62,500
1955 · Salton Sea
USGS Topo · 1:250,000
1955 · El Centro
USGS Topo · 1:250,000