Mule Mountains dominate the southern landscape of this desert quadrangle, where the Roosevelt Mine is situated at the foot of the range. This area of the Colorado Desert is defined by its network of ephemeral washes draining from the highlands toward the Chuckwalla Valley to the north. A legacy of early overland travel is preserved in the path of The Bradshaw Trl, a historic stage route that skirts the southern edge of the mountains. Modern transportation is concentrated along the northern corridor, where the settlement of Black Rock sits adjacent to the interstate highway. Local infrastructure is sparse, limited to utility-focused routes like Gravel Pit Rd and Black Rock Rd, which provide access to the arid interior.
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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 · Cibola
USGS Topo · 1:62,500
1951 · McCoy Wash
USGS Topo · 1:24,000
1951 · Cibola
USGS Topo · 1:62,500
1952 · Mc Coy Spring
USGS Topo · 1:62,500
1952 · Palo Verde
USGS Topo · 1:24,000
1952 · Ripley
USGS Topo · 1:24,000
1953 · Palo Verde Mountains
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1955 · Salton Sea
USGS Topo · 1:250,000