
The Colorado River carves a dramatic path through this desert landscape, forming the natural border between California and Arizona within the Imperial National Wildlife Refuge. Along its banks, the settlement of Picacho and the Picacho Mill Ruins stand as reminders of the region's mining and milling history. The terrain is defined by a dense network of dry washes, including Red Cloud Wash and Yuma Wash, which drain the eastern slopes of the Trigo Mountains.
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3 editions found
1903 · Yuma
USGS Topo · 1:125,000
1905 · Yuma
USGS Topo · 1:125,000
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
1945 · Picacho Peak
USGS Topo · 1:62,500
1945 · Picacho
USGS Topo · 1:62,500
1951 · Picacho
USGS Topo · 1:62,500