Statistics and Fun Facts
- Freshwater River
- Largest tributary to Green Bay
- River flows to the North
- Length --- 200 miles (322 km)
- Highest concentration of pulp and paper mills in the world. (24 mills on 39 miles of river.)
- Drainage basin --- roughly 6,250 square miles of land surface. (about 16,000 square km) Most of the area (about 90%) is located upstream of Lake Winnebago. About 1/3 of the total basin has become reforested.
- Average annual flow --- Fox River from Lake Winnebago to Green Bay ---116m^3/s. Typical annual maximum and minimum flows are 340 and 55 m^3/s respectively.
- Elevation drop --- 167.32 feet (51 meters) in only 39 miles of river. Prior to dam construction, the Fox River had many sizable rapids. The elevation drop is close to Niagara Falls in New York/Canada.
- Impounded by 12 dams and navigable through 17 locks.
- Waters from the Upper Fox River, Wolf River, and Lake Winnebago empty into the Lower Fox River at the outlet of Lake Winnebago. Lake Winnebago is the largest inland lake in Wisconsin, with an area of approximately 212 square miles (550 sq. km) and an average depth of 13 feet (4 meters).