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Minnesota River

river in southern Minnesota over 300 miles long

The Minnesota River is a river in the United States. It is in the northern United States, in the state of Minnesota. It is a tributary of the Mississippi River. It is about 534 km long.

The source of the river is a lake in western Minnesota. The lake is called Big Stone Lake. The lake is on the border between the state of Minnesota and the state of South Dakota. From its source, the Minnesota flows southeast. At Mankato, it turns northeast. It joins the Mississippi just south of the cities of Saint Paul and Minneapolis.

The Minnesota River was formed after the last ice age in North America.