Porcupine Ridge
Ridge in Penobscot County, Maine · on the USGS South Lagrange quadrangle
45.09616, -68.77003
Maps that show Porcupine Ridge
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South Lagrange, ME
Detailed map of terrain, trails and roads
USGS topo, 2024
Boyd Lake, ME
Old map for history, not navigation
USGS historical 15-minute topo (1933)
Boyd Lake, ME
Old map for history, not navigation
USGS historical 15-minute topo (1955)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-32 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-11 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-12 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).