| North Fork Salmon River | |
| Country | United States |
|---|---|
| State | Idaho |
| Source | Lewis and Clark Ridge |
| - elevation | 7,960 ft (2,426 m) |
| - coordinates | 45°42′02″N 113°58′29″W / 45.70056°N 113.97472°W |
| Mouth | Salmon River |
| - elevation | 3,625 ft (1,105 m) |
| - coordinates | 45°24′19″N 113°59′41″W / 45.40528°N 113.99472°WCoordinates: 45°24′19″N 113°59′41″W / 45.40528°N 113.99472°W |
| Length | 24 mi (39 km) |
| Basin | 211 sq mi (546 km2) |
| Discharge | for North Fork |
| - average | 90.4 cu ft/s (3 m3/s) |
| - max | 901 cu ft/s (26 m3/s) |
| - min | 28 cu ft/s (1 m3/s) |
The North Fork Salmon River is a 24-mile (39 km) tributary of the Salmon River, flowing through east-central Idaho in the United States. It joins the Salmon River about 20 miles (32 km) north of the town of Salmon, in Lemhi County.