Porphyry Reef
Ridge in Teton County, Montana · on the USGS Porphyry Reef quadrangle
47.94459, -112.95135
Maps that show Porphyry Reef
Get them in the map app
Porphyry Reef, MT
Detailed map of terrain, trails and roads
USGS topo, 2024
Porphyry Reef
Forest Service topo with road numbers
Forest Service FSTopo 7.5-minute quad
Teton River Area Over-Snow Vehicle Use Map (sheet)
Where snowmobiles are allowed
Helena-Lewis and Clark National Forest (2019)
Rocky Mountain Ranger District Over-Snow Vehicle Use Map
Where snowmobiles are allowed
Helena-Lewis and Clark National Forest (2019)
Choteau 30x60 Land Ownership (BLM Surface Management)
Land Ownership Maps from BLM Data · Montana
Helena-Lewis and Clark National Forest
West — Forest Service forest map
Flathead National Forest
Forest Service forest map
Lolo National Forest
Forest Service forest map
IFR Enroute Low Altitude Chart L-13 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-01 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-01 (Alaska)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).