Hartell Lake
Reservoir in Clinton County, Missouri · on the USGS Plattsburg quadrangle
39.60421, -94.40216
Maps that show Hartell Lake
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Plattsburg, MO
USGS topo, 2021

Plattsburg, MO
USGS historical 15-minute topo (1925)

Network to Freedom Brochure Map - National Underground Railroad Network to Freedom Program
National Park Service Maps (public domain) · National Underground Railroad Network to Freedom Program

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 High Altitude Chart H-05 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).