Eau Claire River (Wisconsin River tributary)

The Eau Claire River is a tributary of the Wisconsin River, located in central Wisconsin, United States. It is approximately 90 miles (140 km) long. The river's name, meaning "clear water" in French, reflects its relatively pristine condition compared to some other rivers in the region.

The river originates in the forests of northern Marathon County and flows generally southward through Clark and Eau Claire counties. Its watershed drains a largely forested and agricultural landscape. The Eau Claire River joins the Wisconsin River near the city of Eau Claire.

The river is a popular destination for recreational activities, including canoeing, kayaking, and fishing. The presence of trout, including brook, brown, and rainbow trout, makes it attractive to anglers. Several county parks and state natural areas are located along the river's course, offering opportunities for hiking and camping.

The Eau Claire River has a history of logging and milling activities. Dams were constructed along the river to power sawmills and other industries. Some of these dams remain in place, creating impoundments along the river's length.

The river's water quality is generally considered good, though agricultural runoff and other non-point sources of pollution pose potential challenges. Efforts are underway to protect and improve the river's health through watershed management practices.