Keg Creek Lake
Reservoir in Mills County, Iowa · on the USGS Rock Bluff quadrangle
40.98539, -95.80389
Maps that show Keg Creek Lake
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Rock Bluff, NE-IA
USGS topo, 2021

Nehawka, NE
USGS historical 15-minute topo (1935)

Nehawka, NE
USGS historical 15-minute topo (1940)

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
Name, class, county and location: USGS Geographic Names Information System (public domain).