Opal Valley
Basin in Malheur County, Oregon · on the USGS Folly Farm quadrangle
43.02794, -118.13407
Maps that show Opal Valley
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Folly Farm, OR
USGS topo, 2024
Folly Farm, OR
USGS historical 15-minute topo (1974)
IFR Enroute Low Altitude Chart L-11 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-13 (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
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).