| Firehole River | |
|---|---|
 Firehole River | |
  Firehole River near South Scalloped Spring  Firehole River (the United States) | |
| Location | |
| Country | United States |
| State | Wyoming |
| Physical characteristics | |
| Source | Madison Lake |
| • location | Yellowstone National Park, Wyoming |
| • coordinates | 44°20′37″N 110°52′43″W / 44.34361°N 110.87861°W[1] |
| Mouth | Madison River |
• location | Madison Junction, Wyoming |
• coordinates | 44°38′32″N 110°51′56″W / 44.64222°N 110.86556°W[1] |
| Length | 21 mi (34 km) |
| Discharge | |
| • location | West Yellowstone |
| • average | 307 cu ft/s (8.7 m3/s)[2] |
| Basin features | |
| Tributaries | |
| • left | Sentinel Creek, Fairy Creek, Little Firehole River, Iron Spring Creek |
| • right | Nez Perce Creek |
The Firehole River is located in northwestern Wyoming, and is one of the two major tributaries of the Madison River. It flows north approximately 21 miles (34 km) from its source in Madison Lake on the Continental Divide to join the Gibbon River at Madison Junction in Yellowstone National Park. It is part of the Missouri River system.