The Trempealeau River (pronounced TREM-puh-lo, from the French trempe à l'eau, dip in water) is an 81.5-mile-long (131.2 km)[1] tributary of the Mississippi River in the Driftless Area of western Wisconsin in the United States.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed October 5, 2012