Duncan Lake
Reservoir in Stephens County, Oklahoma · on the USGS Hope quadrangle
34.51931, -97.81900
Maps that show Duncan Lake
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Hope, OK
USGS topo, 2022
Marlow, OK
USGS historical 15-minute topo (1950)
Marlow, OK
USGS historical 15-minute topo (1951)
U.S. Fish and Wildlife Service Alligator Snapping Turtle Range (2024)
Fish & Wildlife Service Refuge Maps (public domain)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-17 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-06 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).