Walker Lake
Reservoir in Zapata County, Texas · on the USGS Chargos Creek quadrangle
27.20781, -99.01231
Maps that show Walker Lake
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Chargos Creek, TX
USGS topo, 2022
Mogotes Hill, TX
USGS historical 15-minute topo (1940)
Mogotes Hill, 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).