| View KML View WKT | United States Rivers |
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Firth River
| States | Alaska (37 mi), Canada (97 mi) |
| Length | 133.6 miles |
| Watershed Length* | 175 miles |
| Mouth | Arctic Ocean |
| GNIS | 1402078 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Mancha Creek | 96 | 41 | 41 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey