Killsnake River

The Killsnake River is a 19.7 mi river in eastern Wisconsin in the United States. It is a tributary of the South Branch of the Manitowoc River, which flows to Lake Michigan.

The river flows for its entire course in central Calumet County. It rises about 3 mi east of Lake Winnebago and flows generally east-southeastwardly; it joins the South Branch of the Manitowoc River about 6 mi east of Chilton in the Killsnake Wildlife Area.

Killsnake Wildlife Area
The 5777 acre surrounding the confluence of the Killsnake River with the South Branch Manitowoc River has been designated a wildlife refuge by the Wisconsin Department of Natural Resources. The area is located entirely in the town of Rantoul.

Registered historic area
There are four archaeological sites ranging from a major Early Paleo-Indian campsite from 9000 BC to a Potawatomi village from the mid-19th century AD located in the wildlife area, and the site is listed on the National Register of Historic Places.