South Fork Flathead River Map

The South Fork Flathead River is a major river in Northwestern Montana in the northwest United States. It is one of the three main forks of the Flathead River, a tributary of the Clark Fork River. The north-northwest trending river is about 98 miles long, making it the second longest tributary of the Flathead River.
  • Country: United States
  • State: Montana
  • County: Flathead
  • Length: 98 miles (158 km)
  • Basin size: 1,663 sq mi (4,310 km²)
  • River system: Columbia River
  • Designated: October 12, 1976
Data from: en.wikipedia.org