
Trigo Mountains dominate this arid landscape in La Paz County, where the topography is defined by a complex network of seasonal drainages and dry creek beds. The small settlement of Hidden Valley sits near the upper reaches of Lopez Wash, representing a remote outpost in a territory largely shaped by the natural contours of the desert. The drainage patterns revealed here, including Clip Wash and Yuma Wash, indicate the primary corridors for water movement through this high-desert environment.
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1934 · Trigo Peaks
USGS Topo · 1:48,000
1939 · Red Hill
USGS Topo · 1:62,500
1939 · Trigo Peaks
USGS Topo · 1:62,500
1942 · Blythe
USGS Topo · 1:250,000
1945 · Cibola
USGS Topo · 1:62,500
1945 · Picacho
USGS Topo · 1:62,500
1951 · Picacho
USGS Topo · 1:62,500
1951 · Cibola
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1954 · Red Hill
USGS Topo · 1:62,500