Big Tank
Reservoir in Webb County, Texas · on the USGS Cuervo Creek quadrangle
27.74710, -99.55929
Maps that show Big Tank
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Cuervo Creek, TX,TAM, US
USGS topo, 2022
Islitas, TX
USGS historical 15-minute topo (1956)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-20 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-07 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).