Saint Louis River (Lake Superior tributary)
| Saint Louis River | |
|---|---|
The Saint Louis River at Thomson, Minnesota | |
| Native name | Gichigami-ziibi (Ojibwe) |
| Location | |
| Country | United States |
| State | Minnesota, Wisconsin |
| County | St. Louis and Carlton Counties, Minnesota; Douglas County, Wisconsin |
| Physical characteristics | |
| Source | |
| • location | Babbitt SE |
| • coordinates | 47°30′04″N 91°49′51″W / 47.5010312°N 91.8307225°W |
| Mouth | Lake Superior |
• location | West Duluth |
• coordinates | 46°45′N 92°06′W / 46.75°N 92.1°W |
| Length | 192 miles (309 km) |
| Basin size | 3,634 sq mi (9,410 sq km) |
The Saint Louis River (abbreviated St. Louis River) is a river in the U.S. states of Minnesota and Wisconsin that flows into Lake Superior. The largest U.S. river to flow into the lake, it is 192 miles (309 km) in length and starts 13 miles (21 km) east of Hoyt Lakes, Minnesota. The river's watershed covers 3,634 square miles (9,410 km2). Near the Twin Ports of Duluth, Minnesota and Superior, Wisconsin, the river becomes a freshwater estuary.