Big Marsh
Swamp in Morrison County, Minnesota · on the USGS Flensburg quadrangle
45.89000, -94.61030
Maps that show Big Marsh
Get them in the map app
Flensburg, MN
Detailed map of terrain, trails and roads
USGS topo, 2022
Swanville, MN
Old map for history, not navigation
USGS historical 15-minute topo (1950)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-14 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-02 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).