The Big River is a minor tributary of the Mississippi River in western Wisconsin in the United States. It flows for its entire lengthU.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map , accessed October 5, 2012 in western Pierce County, rising in the town of River Falls and flowing south-southwestwardly into the town of Oak Grove. It enters the Mississippi River about southeast of Prescott.DeLorme (1992). Wisconsin Atlas & Gazetteer. Freeport, Maine: DeLorme.
See also List of Wisconsin rivers
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