| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Arkansas River | River (basin) | native | 78811 |
| Brazos River | River (basin) | native | 86798 |
| Colorado River | River (basin) | native | 10294 |
| Mississippi Complex | River (basin) | native | 81264 |
| Mississippi River | River (basin) | native | 5723 |
| Mississippi-Missouri | River (basin) | native | 78811 |
| Missouri River | River (basin) | native | 5723 |
| Nearctic | Zoogeographic realm | endemic | 5723 |
| Pecos River | River (basin) | introduced | 86798 |
| Red River of the North | River (basin) | native | 86798 |