BIG SIOUX RIVER

The falls of Big Sioux River at Sioux Falls, South Dakota

The Big Sioux River, highlighted on a map of the watershed of the Missouri River

The 'Big Sioux River' is a tributary of the Missouri River, 295 mi (470 km) long, in eastern South Dakota and northwestern Iowa in the United States.[1] The United States Board on Geographic Names settled on "Big Sioux River" as the stream's name in 1961.
The Big Sioux River rises in Roberts County, South Dakota on the Coteau 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 a waterfall 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 and Akron in Iowa. It joins the Missouri River from the north at Sioux City, Iowa.DeLorme (1998). ''Iowa Atlas & Gazetteer''. Yarmouth, Maine: DeLorme. ISBN 0-89933-214-5DeLorme (2001). ''South Dakota Atlas & Gazetteer''. Yarmouth, Maine: DeLorme. ISBN 0-89933-330-3

Contents
Tributaries
See also
References

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'.[2]

See also



List of Iowa rivers

List of South Dakota rivers

Little Sioux River

River borders of U.S. states

References


1. Columbia Gazetteer of North America entry
2.


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