Basswood Island
Island in Ashland County, Wisconsin · on the USGS Madeline Island quadrangle
46.85021, -90.74630
Maps that show Basswood Island
Get them in the map app
Madeline Island, WI
Detailed map of terrain, trails and roads
USGS topo, 2022

Madeline Island, WI
Old map for history, not navigation
USGS historical 15-minute topo (1964)

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).