H S Johnson Dam
Spring in Grant County, Oregon · on the USGS Seneca quadrangle
44.20320, -118.95435
Maps that show H S Johnson Dam
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Seneca, OR
USGS topo, 2024
Seneca, OR — USGS historical 15-minute topo (1961)
USGS Historical Topo Maps (public domain) · Oregon
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-11 (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-03 (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).