Main Flowage
Reservoir in Marathon County, Wisconsin · on the USGS Marshfield quadrangle
44.72971, -90.18724
Maps that show Main Flowage
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Marshfield, WI
Detailed map of terrain, trails and roads
USGS topo, 2023
Marshfield, WI
Old map for history, not navigation
USGS historical 15-minute topo (1954)
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).