Horicon Marsh

Between Wi Hwys 33 & 49 north to south and between Mayville and Waupun east to west.

31,653 acre marshland along the Rock River


Northern Edge

This northern segment of the Horicon Marsh is actually in Fond du Lac County. Wi 49 crosses the marsh at this point, it is also the county line between Fond du Lac and Dodge Counties.

Photo taken by J.R. Manning




This huge marsh provided hunting and fishing to Native Americans and attracted white settlers who went so far as to build a dam in 1846, creating Horicon Lake. The dam was removed in 1869 and the battle over the marsh continued until 1941 when is was declared the Horicon National Wildlife Refuge. The State of Wisconsin controls the south 10,857 acres, the federal government controls the northern 20,796 acres. Numerous viewing sites are located around the edge of the marsh.

The marsh actually crosses the border, with the northern tip of the marsh located in Fond du Lac County, and the bulk of it located in Dodge County.

Update Log 

  • June 21, 2011: Added by J.R. Manning


  • J.R. Manning - Lugnuts969 [at] gmail [dot] com