Big Sioux River

Big Sioux River

A river rising in northeast South Dakota and flowing about 650 km (400 mi) southward, partly along the South Dakota-Iowa border, to the Missouri River at Sioux City, Iowa.

Thesaurus

Noun

1.

Big Sioux River - a river that rises in northeastern South Dakota and flows southward to join the Missouri River at Sioux City, IowaCoyote State, Mount Rushmore State, SD, South Dakota - a state in north central United States