Fosback Marsh
Swamp in Lane County, Oregon · on the USGS Mercer Lake quadrangle
44.03734, -124.01234
Maps that show Fosback Marsh
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Mercer Lake, OR — USGS 7.5-minute topo (2024)
USGS Topo Maps (public domain) · Oregon
Public domain
Heceta Head, OR — USGS historical 15-minute topo (1920)
USGS Historical Topo Maps (public domain) · Oregon
Public domain
Heceta Head, OR — USGS historical 15-minute topo (1942)
USGS Historical Topo Maps (public domain) · Oregon
Public domain
Heceta Head, OR — USGS historical 15-minute topo (1956)
USGS Historical Topo Maps (public domain) · Oregon
Public domain
South Central Coast Ranger District Motor Vehicle Use Map (MVUM) — Siuslaw National Forest (2026)
Forest Service Maps (public domain) · Siuslaw National Forest
Public domain
North Central Coast Ranger District Motor Vehicle Use Map (MVUM) — Siuslaw National Forest (2026)
Forest Service Maps (public domain) · Siuslaw National Forest
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 High Altitude Chart H-03 (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
Name, class, county and location: USGS Geographic Names Information System (public domain).