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St. Joe River
| States | Idaho |
| Length | 139.8 miles |
| Watershed Length* | 319 miles |
| Mouth | Spokane River ⤏ Eastern Pacific Ocean |
| GNIS | 389832 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Marble Creek | 55 | 26 | 26 |
| Simmons Creek | 99 | 12 | 12 |
| Sisters Creek | 74 | 14 | 14 |
| Slate Creek | 61 | 21 | 21 |
| St. Joe River - North Fork | 68 | 21 | 33 |
| St. Maries River | 16 | 47 | 73 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey