Main Tank
Reservoir in Cochise County, Arizona · on the USGS Cinder Hill quadrangle
31.46099, -109.30648
Maps that show Main Tank
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Cinder Hill, AZ
USGS topo, 2021

College Peaks, AZ
USGS historical 15-minute topo (1940)

College Peaks, AZ
USGS historical 15-minute topo (1958)

Douglas Ranger District Motor Vehicle Use Map (MVUM)
Coronado National Forest

IFR Enroute Low Altitude Chart L-05 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-04 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).