| View KML View WKT | United States Rivers |
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Boulder River
| States | Montana |
| Length | 83.9 miles |
| Watershed Length* | 157 miles |
| Mouth | Jefferson River ⤏ Gulf of Mexico |
| GNIS | 780285 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Basin Creek | 59 | 17 | 17 |
| Bison Creek | 64 | 25 | 25 |
| Little Boulder River | 46 | 17 | 17 |
| Lowland Creek | 70 | 14 | 14 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey