Koch Island
Island in Dodge County, Wisconsin · on the USGS Mayville South quadrangle
43.48333, -88.60871
Maps that show Koch Island
Get them in the map app
Mayville South, WI
Detailed map of terrain, trails and roads
USGS topo, 2022
Horicon, WI
Old map for history, not navigation
USGS historical 15-minute topo (1955)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-28 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-31 (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).