The Trigo Mountains define this arid landscape in La Paz County, where the desert surface is carved by numerous drainage systems. A significant portion of the northwestern terrain falls within the Yuma Proving Ground, reflecting the military's long-standing footprint in this region. This 2011 survey documents the natural topography and primitive road networks that navigate through features like Needles Eye. The area is characterized by its dramatic seasonal watercourses, including Crazy Woman Wash and Hart Mine Wash, which flow toward the river valley to the west. This map serves as a primary reference for the drainage patterns of Lopez Wash and Gould Wash during the early 21st century.
7 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
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
1952 · Mule Wash
USGS Topo · 1:24,000
1952 · Palo Verde
USGS Topo · 1:24,000