San Carlos Reservoir dominates this landscape where the borders of Pinal, Graham, and Gila counties converge. The reservoir, fed by the San Carlos River and Apache Wash, is surrounded by dramatic vertical relief including Flatiron Mesa to the north and the peaks of Mt Geronimo and Rockhouse Mtn to the south. This 2014 survey reveals the importance of water management in the arid corridor, marked by a series of vital sources such as Wire Corral Spring, Quail Spring, and Cottonwood Spring.
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This is the sole edition of this map. No revisions or reprints were ever made.
1915 · Christmas
USGS Topo · 1:62,500
1917 · Christmas
USGS Topo · 1:62,500
1954 · Mesa
USGS Topo · 1:250,000
1957 · Mesa
USGS Topo · 1:250,000
1958 · Mesa
USGS Topo · 1:250,000
1960 · Mesa
USGS Topo · 1:250,000
1962 · San Carlos Reservoir
USGS Topo · 1:62,500
1964 · Mesa
USGS Topo · 1:250,000
1965 · Bucket Mtn
USGS Topo · 1:24,000
1966 · Mount Triplet
USGS Topo · 1:24,000