Greenfield Lake
Reservoir in Adair County, Iowa · on the USGS Greenfield quadrangle
41.29635, -94.47930
Maps that show Greenfield Lake
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Greenfield, IA
USGS topo, 2022
Greenfield, IA
USGS historical 15-minute topo (1954)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-10 (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
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).