Griffin Island
Island in San Patricio County, Texas · on the USGS Edroy quadrangle
27.91946, -97.72500
Maps that show Griffin Island
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Edroy, TX
USGS topo, 2022
Robstown, TX
USGS historical 15-minute topo (1925)
Robstown, TX
USGS historical 15-minute topo (1954)
U.S. Fish and Wildlife Service Alligator Snapping Turtle Range (2024)
Fish & Wildlife Service Refuge Maps (public domain)
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
IFR Enroute Low Altitude Chart L-21 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).