| View KML View WKT | United States Rivers |
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Black River
| States | Louisiana |
| Length | 41.7 miles |
| Watershed Length* | 8,173 miles |
| Mouth | Red River of the South ⤏ Gulf of Mexico |
| GNIS | 558170 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Little River | 41 | 97 | 1,318 |
| Ouachita River | 42 | 548 | 6,268 |
| Tensas River | 42 | 140 | 545 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey