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1980 Map of Alamo Spring

Name: 1980 Topographic Map of Alamo Spring
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1980

About this map

The international border between United States of America and Estados Unidos Mexicanos cuts diagonally across this 1980 survey, illustrating the high-elevation terrain where Arizona meets Sonora. Within the northern section, the Coronado National Forest covers the Pajarito Mountains, a region marked by vital water sources like Alamo Spring and various livestock tanks including Tonto Tank and Coyote Tank.

South of the border line, the topography transitions into the Sierra La Esmeralda and is dotted with small settlements and named ranch sites. Researchers can trace the network of drainage canyons and peaks such as Cerro Los Toros and Cerro El Ruidito. The landscape is defined by its series of intermittent watercourses like Real Viejo and Ahumada, which historically dictated the placement of outposts like Los Adobes and Las Lagunitas in this arid environment.