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Little Powder River
| States | Montana (74 mi), Wyoming (115 mi) |
| Length | 188.7 miles |
| Watershed Length* | 831 miles |
| Mouth | Powder River ⤏ Gulf of Mexico |
| GNIS | 773477 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Belle Creek | 43 | 27 | 27 |
| Bowers Creek | 67 | 22 | 22 |
| Corral Creek | 166 | 14 | 14 |
| Cottonwood Creek | 137 | 41 | 90 |
| Cow Creek | 150 | 19 | 19 |
| Duck Creek | 99 | 29 | 29 |
| Elk Creek | 105 | 20 | 20 |
| Hay Creek | 10 | 27 | 27 |
| Horse Creek | 118 | 51 | 134 |
| Horse Creek | 34 | 17 | 17 |
| Little Powder River - East Fork | 13 | 49 | 64 |
| Olmstead Creek | 86 | 30 | 30 |
| Ranch Creek | 58 | 29 | 29 |
| Rawhide Creek | 169 | 37 | 59 |
| Spring Creek | 133 | 24 | 24 |
| Trail Creek | 77 | 16 | 16 |
| White Tail Creek | 109 | 23 | 23 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey