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1954 Map of Trigo Peaks

Name: 1954 Topographic Map of Trigo Peaks
Creator: U.S. Geological Survey
Published: 1965
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1965

About this map

The Dome Rock Mountains and the North Trigo Peaks dominate this mid-century survey of the arid borderlands of Yuma and La Paz counties. This is a landscape defined by seasonal water and difficult passage, where survival for early travelers depended on landmarks like the White Tanks and Mohave Tanks. A sparse network of early transportation routes, including the Gould Trail and several unnamed Jeep Trails, connect the basin floors to high mountain gaps such as Weaver Pass and Felipe Pass.

Evidence of desert prospecting appears at the Tweed Mine and various unnamed Prospects scattered near the peaks. The map also delineates a portion of a Military Reservation, illustrating the region's mid-20th-century transition toward defense use. Extensive drainage systems like Trigo Wash and Tyson Wash cut through the La Posa Plain, revealing the natural erosion patterns of the western Arizona desert.