Alamo Spring serves as a critical water source in this arid borderland landscape along the Arizona-Sonora boundary. The terrain is defined by a complex network of ephemeral drainage channels that feed into various cattle tanks and reservoirs, such as Chiladote Tank and Coyote Tank. Human presence is primarily indicated by a system of numbered forest and ranch roads, including 4182 and 4189, which navigate the high-desert topography. The proximity to the international line is evidenced by the placement of Border Tank in the northern reach of the survey. This 2012 snapshot of the region highlights the essential infrastructure required for ranching and resource management in a remote environment where water features like Soto Tank are central to local land use.
9 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.
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