| View KML View WKT | United States Rivers |
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Big Sioux River
| States | Iowa (136 mi), South Dakota (418 mi) |
| Length | 418.0 miles |
| Watershed Length* | 2,345 miles |
| Mouth | Missouri River ⤏ Gulf of Mexico |
| GNIS | 1253923 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Bachelor Creek | 209 | 26 | 26 |
| Beaver Creek | 106 | 49 | 49 |
| Blood Run | 132 | 19 | 19 |
| Broken Kettle Creek | 17 | 25 | 25 |
| Brookfield Creek | 204 | 21 | 21 |
| Brule Creek | 34 | 41 | 81 |
| Bullhead Run | 314 | 24 | 24 |
| Flandreau Creek | 231 | 41 | 60 |
| Hidewood Creek | 316 | 34 | 34 |
| Indian Creek | 60 | 23 | 23 |
| Indian River | 391 | 17 | 17 |
| Isanti Creek | 216 | 22 | 22 |
| Medary Creek | 259 | 56 | 93 |
| Mud Creek | 235 | 15 | 15 |
| Mud Creek | 363 | 25 | 25 |
| Ninemile Creek | 130 | 23 | 23 |
| North Deer Creek | 274 | 49 | 94 |
| Pattee Creek | 82 | 18 | 18 |
| Peg Munky Run | 307 | 18 | 18 |
| Rock River | 81 | 143 | 616 |
| Sixmile Creek | 65 | 37 | 37 |
| Skunk Creek | 165 | 63 | 174 |
| Slip-up Creek | 150 | 26 | 26 |
| Split Rock Creek | 140 | 61 | 257 |
| Spring Creek | 241 | 38 | 38 |
| Stray Horse Creek | 330 | 29 | 29 |
| Union Creek | 49 | 2 | 29 |
| Willow Creek | 353 | 33 | 33 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey