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1954 Map of Trigo Peaks

Name: 1954 Topographic Map of Trigo Peaks
Creator: U.S. Geological Survey
Published: 1976
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1976

About this map

The Trigo Mountains dominate this arid landscape along the western edge of Yuma Co, characterized by sharp peaks and a complex network of desert washes. Topography by plane-table surveys from the 1930s was updated here in the mid-1950s, revealing a region largely defined by its military use and physical barriers. Large portions of the terrain are designated as a Military Reservation and the Proving Ground Military Reservation, restricting general access across the South Trigo Peaks and into the Chocolate Mts.

Movement through the range is channeled through specific mountain gaps like Trigo Pass and Felipe Pass. Human activity is sparse, marked primarily by mineral extraction at the Tweed Mine and various prospects. Critical water sources in this dry environment are noted as natural catchments including White Tanks and Mohave Tanks, which were essential for travelers navigating the Jeep Trail and the Gila and Salt River Base Line Road.