Porphyry Peak
Summit in Okanogan County, Washington · on the USGS Chesaw quadrangle
48.95877, -119.06089
Maps that show Porphyry Peak
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Chesaw, WA-BC
USGS topo, 2023
Mt Bonaparte, WA — USGS historical 15-minute topo (1957)
USGS Historical Topo Maps (public domain) · Washington
IFR Enroute Low Altitude Chart L-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
IFR Enroute Low Altitude Chart L-13 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
IFR Enroute High Altitude Chart H-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
IFR Enroute Low Altitude Chart L-01 (Alaska) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).