1965 Map of Picacho SW, 1966 Print
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1965 Map of Picacho SW

USGS Topo · Published 1966

About this map

The Colorado River winds through the borderlands of Imperial Co and Yuma Co in this mid-1960s study of the desert riverfront. The landscape is defined by the contrast between the fertile river corridor of the Imperial National Wildlife Refuge and the arid, broken terrain of the Trigo Mountains. Notable historical sites are recorded along the banks, including Nortons Landing (Site), Hoge Ranch (Site), and Nommel Place (Site), indicating earlier settlement patterns before the area was primarily designated for conservation and recreation.


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Map Details

Date Portrayed1965
Date Published1966
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions22.85 x 26.91 inches

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Source Details

CopyrightPublic Domain