Big Slough
Swamp in Clay County, Minnesota · on the USGS Big Slough quadrangle
46.69163, -96.30840
Maps that show Big Slough
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Big Slough, MN
USGS topo, 2022
Barnesville, MN
USGS historical 15-minute topo (1919)
Barnesville, MN
USGS historical 15-minute topo (1952)
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
Name, class, county and location: USGS Geographic Names Information System (public domain).