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Thunder Bay River
| States | Michigan |
| Length | 76.1 miles |
| Watershed Length* | 287 miles |
| Mouth | Lake Huron |
| GNIS | 1614839 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Gilchrist Creek | 54 | 14 | 14 |
| Thunder Bay River - Lower South Branch | 9 | 32 | 95 |
| Thunder Bay River - North Branch | 11 | 54 | 54 |
| Thunder Bay River - Upper South Branch | 30 | 35 | 35 |
| Truax Creek | 29 | 13 | 13 |
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* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey