- Big Sioux River
The Big Sioux River is a tributary of the
Missouri River , 295 mi (470 km) long, in easternSouth Dakota and northwesternIowa in theUnited States . [ [http://www.bartleby.com/69/20/B06220.html Columbia Gazetteer of North America entry] ] TheUnited States Board on Geographic Names settled on "Big Sioux River" as the stream's name in 1961.Gnis|1253923|Big Sioux River]The Big Sioux River rises in
Roberts County, South Dakota on theCoteau des Prairies and flows generally southwardly through Grant, Codington, Hamlin, Brookings, Moody, and Minnehaha Counties, past the communities of Watertown, Castlewood, Bruce, Flandreau, Egan, Trent, Dell Rapids, and Baltic to Sioux Falls, where it passes over awaterfall which gives that city its name. Downstream of Sioux Falls and the community of Brandon, the Big Sioux is used to define the boundary between South Dakota and Iowa, flowing along the eastern borders of Lincoln and Union Counties in South Dakota, and the western borders of Lyon, Sioux and Plymouth Counties in Iowa, past the communities of Canton, Fairview, Hudson, North Sioux City, and Dakota Dunes in South Dakota and Hawarden, Beloit, and Akron in Iowa. It joins the Missouri River from the north atSioux City, Iowa .DeLorme (1998). "Iowa Atlas & Gazetteer". Yarmouth, Maine: DeLorme. ISBN 0-89933-214-5]DeLorme (2001). "South Dakota Atlas & Gazetteer". Yarmouth, Maine: DeLorme. ISBN 0-89933-330-3]Tributaries
The Big Sioux River collects the Rock River from the northeast in Sioux County, Iowa. A minor
headwaters tributary of the Big Sioux in Grant County, South Dakota, is known as the Indian River. [Gnis|1255756|Indian River]Broken Kettle Creek has its confluence with the Big Sioux in Plymouth County, Iowa.ee also
*
List of Iowa rivers
*List of South Dakota rivers
*Little Sioux River
*River borders of U.S. states References
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