| View KML View WKT | United States Rivers |
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Fortymile River - South Fork
| States | Alaska |
| Length | 28.0 miles |
| Watershed Length* | 505 miles |
| Mouth | Fortymile River ⤏ Northeastern Pacific Ocean |
| GNIS | 1409922 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Dennison Fork | 28 | 93 | 227 |
| Mosquito Fork | 28 | 140 | 180 |
| Walker Fork | 18 | 37 | 70 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey