Keyhole Reservoir
Reservoir in Crook County, Wyoming · on the USGS Grasshopper Butte quadrangle
44.35668, -104.84133
Maps that show Keyhole Reservoir
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Grasshopper Butte, WY
USGS topo, 2021
Moorcroft, WY
USGS historical 15-minute topo (1918)
Moorcroft, WY
USGS historical 15-minute topo (1957)
IFR Enroute Low Altitude Chart L-12 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-02 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-13 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-03 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-01 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).