Three Mile Lake
Reservoir in Union County, Iowa · on the USGS Afton quadrangle
41.09024, -94.23001
Maps that show Three Mile Lake
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Afton, IA
USGS topo, 2022
Afton, IA
USGS historical 15-minute topo (1951)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-27 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-12 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-05 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).