Decker Lake
Reservoir in Miami County, Ohio · on the USGS Piqua West quadrangle
40.19036, -84.28592
Maps that show Decker Lake
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Piqua West, OH
Detailed map of terrain, trails and roads
USGS topo, 2023

Covington, OH
Old map for history, not navigation
USGS historical 15-minute topo (1911)

Covington, OH
Old map for history, not navigation
USGS historical 15-minute topo (1944)

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 High Altitude Chart H-11 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-10 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-12 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).