Fond du Lac River (Wisconsin)

Fond du Lac River
The Fond du Lac River as it passes through the Town of Fond du Lac.
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Location
Country	United States
State	Wisconsin
County	Fond du Lac
Physical characteristics
Source
• coordinates	43°46′52″N88°27′29″W / 43.7811111°N 88.4580556°W / 43.7811111; -88.4580556
Mouth	Lake Winnebago
• location	City of Fond du Lac
• coordinates	43°48′02″N88°27′09″W / 43.8005443°N 88.4526073°W / 43.8005443; -88.4526073
• elevation	751 feet (229 m)

The Fond du Lac River is a river that flows through the city of Fond du Lac, Wisconsin into Lake Winnebago. ^[1] The river starts near Rosendale, Lamartine and Eldorado, then flows around 10 miles east. The east and west branches come together in downtown Fond du Lac less than a mile before flowing into Lake Winnebago. ^[2]

The Supple Marsh and Lakeside Park border the river as it flows into Lake Winnebago.

2019 Flooding

On March 13 and 14, the river flooded its banks in downtown Fond du Lac. ^[3] The flooding was a result of ice jams under the main bridges that cross the river in the city. Evacuation efforts were put in place, as crews worked to remove the ice. Multiple state and local groups helped with the recovery.

Other Misc. Flooding

In late February 2025, the city of Fond du Lac, Wisconsin faced elevated flood risk as warmer temperatures and rain began impacting the region’s thawing rivers. The rapid warming broke up river-ice coverage, raising the potential for ice jams along the Fond du Lac River and its branches. ^[4]

See also

• List of Wisconsin rivers

References

1. "Report for Fond du Lac River". USGNIS. Retrieved April 13, 2018.
2. "Fond du Lac River Watershed". Wisconsin DNR. Retrieved April 13, 2018.
3. Roznik, Sharon. "Flooding intensifies in Fond du Lac as rush hour passes; more residents evacuated". The Fond du Lac Reporter. Retrieved 19 March 2019.
4. "Fond du Lac floods from the past 100 years or more". The Reporter. Retrieved 2025-10-24.