Porcupine Hill
Summit in Clear Creek County, Colorado · on the USGS Idaho Springs quadrangle
39.64464, -105.54901
Maps that show Porcupine Hill
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Idaho Springs, CO
USGS topo, 2023
Georgetown, CO
USGS historical 15-minute topo (1903)
Georgetown, CO
USGS historical 15-minute topo (1905)
Georgetown, CO
USGS historical 15-minute topo (1957)
IFR Enroute Low Altitude Chart L-10 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-09 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-05 (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
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).