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Mukwonago River Unit

Kettle Moraine State Forest

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COVID-19 Update: 

Visitors are encouraged to practice social distancing, frequent hand washing and to wear a face covering if not yet vaccinated or if social distancing cannot be maintained. For more information, please see:


Open 6 a.m. to 11 p.m. year-round.


Get directions to the property.


A vehicle admission sticker is not required at Mukwonago River.


See volunteering opportunities at the property.

The Mukwonago River Unit of the Kettle Moraine State Forest is in Waukesha and Walworth counties. The 970-acre, former Rainbow Springs property, is situated in the Mukwonago River watershed and is an area known for its outstanding resource waters, varied habitats and biological diversity. The forest is adjacent to Lulu Lake State Natural Area.