Big Cook Island
Island in Clinton County, Iowa · on the USGS Savanna quadrangle
42.02919, -90.15957
Maps that show Big Cook Island
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Savanna, IL-IA
Detailed map of terrain, trails and roads
USGS topo, 2024
Savanna, IA
Old map for history, not navigation
USGS historical 15-minute topo (1892)
Savanna, IL
Old map for history, not navigation
USGS historical 15-minute topo (1952)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-28 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-05 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).