Coronado National Forest dominates the northeastern corner of this borderlands survey, where the international boundary between the United States and Mexico cuts a sharp diagonal through the landscape. This high-desert terrain is defined by the steep rises of the Pajarito Mountains and the prominent Mojohave Ridge. Water sources are critical landmarks in this arid environment, represented by a series of catchment basins including Tonto Tank, Soto Tank, and Coyote Tank. The namesake Alamo Spring sits within the drainage of Alamo Canyon near the boundary of Santa Cruz County, providing a vital point of reference for cattle ranchers and land managers navigating this rugged portion of the Arizona-Sonora frontier.
12 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1921 · Old Glory
USGS Topo · 1:125,000
1942 · Ruby
USGS Topo · 1:62,500
1942 · Oro Blanco
USGS Topo · 1:62,500
1943 · Old Glory
USGS Topo · 1:125,000
1944 · Oro Blanco
USGS Topo · 1:62,500
1956 · Nogales
USGS Topo · 1:250,000
1957 · Ruby
USGS Topo · 1:62,500
1958 · Nogales
USGS Topo · 1:250,000
1959 · Nogales
USGS Topo · 1:250,000
1979 · Bartlett Mtn
USGS Topo · 1:24,000