Keystone Tank
Reservoir in Pima County, Arizona · on the USGS Samaniego Peak quadrangle
31.88204, -111.21279
Maps that show Keystone Tank
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Samaniego Peak, AZ
USGS topo, 2021
Samaniego Peak, AZ
USGS historical 15-minute topo (1925)
Twin Buttes, AZ
USGS historical 15-minute topo (1939)
Twin Buttes, AZ
USGS historical 15-minute topo (1941)
Twin Buttes, AZ
USGS historical 15-minute topo (1948)
Twin Buttes, AZ
USGS historical 15-minute topo (1957)
Nogales & Sierra Vista Ranger Districts
Front 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).