Palen Mountains dominate this 2012 survey, revealing the complex drainage patterns of the Colorado Desert. The landscape is defined by an intricate network of dry washes and alluvial fans that radiate from the central massif, reflecting the arid hydrology of eastern Riverside County. Produced as part of the modern US Topo series by the U.S. Geological Survey, this sheet utilizes 2010 NAIP imagery to map the stark topography of the region. The absence of roads or permanent structures within the quadrangle emphasizes the primitive nature of this terrain, providing a precise look at the natural geological formations and elevation contours prior to any significant modern desert developments.
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This is the sole edition of this map. No revisions or reprints were ever made.
1942 · Blythe
USGS Topo · 1:250,000
1945 · Midland
USGS Topo · 1:62,500
1952 · Midland
USGS Topo · 1:62,500
1952 · Mc Coy Spring
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