Gray Knoll
Summit in Uintah County, Utah · on the USGS Firewater Canyon North quadrangle
39.68422, -109.93447
Maps that show Gray Knoll
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Firewater Canyon North, UT
USGS topo, 2023
Firewater Canyon, UT
USGS historical 15-minute topo (1953)
IFR Enroute Low Altitude Chart L-09 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-11 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-04 (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
Name, class, county and location: USGS Geographic Names Information System (public domain).