Winnebago River

The Winnebago River is a 72-mile-long (116 km) river in northern Iowa. It is a tributary of the Shell Rock River, part of the Cedar River watershed that flows via the Iowa River to the Mississippi River. The Winnebago River rises in Winnebago County, Iowa, north of Leland and flows south through Forest City, then east and southeast through Mason City on its way to the Shell Rock River at Rockford. Headwater tributaries of the Winnebago River extend north into southern Minnesota.
The Winnebago River measures approximately 330 cubic feet per second at Mason City.
The river was alternately kn...