Buttermilk Ridge
Ridge in Okanogan County, Washington · on the USGS Oval Peak quadrangle
48.26211, -120.44106
Maps that show Buttermilk Ridge
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Oval Peak, WA — USGS 7.5-minute topo (2023)
USGS Topo Maps (public domain) · Washington
Public domain
Buttermilk Butte, WA — USGS historical 15-minute topo (1969)
USGS Historical Topo Maps (public domain) · Washington
Public domain
IFR Enroute Low Altitude Chart L-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-13 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-01 (Alaska) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).