Upper Walker Tank
Reservoir in Santa Cruz County, Arizona · on the USGS Mount Wrightson quadrangle
31.67205, -110.81682
Maps that show Upper Walker Tank
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Mount Wrightson, AZ
USGS topo, 2021
Agus Caliente, AZ
USGS historical 15-minute topo (1922)
Mount Wrightson, AZ
USGS historical 15-minute topo (1958)
Nogales & Sierra Vista Ranger Districts
Front Motor Vehicle Use Map (MVUM) — Coronado National Forest
Nogales & Sierra Vista Ranger Districts -Back 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).