| View KML View WKT | United States Rivers |
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Clark Fork
| States | Idaho (9 mi), Montana (337 mi) |
| Length | 345.8 miles |
| Watershed Length* | 4,082 miles |
| Mouth | Pend Oreille River ⤏ Eastern Pacific Ocean |
| GNIS | 798973 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Beaver Creek | 44 | 11 | 38 |
| Bitterroot River | 207 | 86 | 598 |
| Blackfoot River | 222 | 130 | 546 |
| Bull River | 20 | 26 | 26 |
| Cedar Creek | 144 | 17 | 17 |
| Dempsey Creek | 327 | 17 | 17 |
| Fish Creek | 163 | 17 | 33 |
| Flathead River | 103 | 158 | 1,721 |
| Flint Creek | 275 | 48 | 62 |
| Gold Creek | 294 | 16 | 30 |
| Harvey Creek | 258 | 16 | 16 |
| Lightning Creek | 0 | 26 | 26 |
| Little Blackfoot River | 302 | 43 | 76 |
| Modesty Creek | 335 | 15 | 15 |
| Ninemile Creek | 183 | 27 | 27 |
| Prospect Creek | 64 | 25 | 25 |
| Racetrack Creek | 331 | 25 | 25 |
| Rattlesnake Creek | 216 | 24 | 24 |
| Rock Creek | 301 | 20 | 20 |
| Rock Creek | 239 | 53 | 168 |
| St. Regis River | 128 | 40 | 54 |
| Swamp Creek | 31 | 15 | 15 |
| Thompson River | 71 | 50 | 88 |
| Tin Cup Joe Creek | 318 | 15 | 15 |
| Trout Creek | 148 | 15 | 15 |
| Vermilion River | 43 | 24 | 24 |
| Warm Springs Creek | 298 | 16 | 16 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey