| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Anadyr River | River (basin) | native | 27547 |
| Arctic Complex | River (basin) | native | 81264 |
| Colorado River | River (basin) | introduced | 5723 |
| Columbia | River (basin) | native | 27547 |
| Danube | River (basin) | native | 5723 |
| Fraser | River (basin) | native | 95037 |
| Great Lakes | Lake | native | 27547 |
| Mackenzie | River (basin) | native | 78982 |
| Mississippi-Missouri | River (basin) | native | 27547 |
| Missouri River | River (basin) | native | 5723 |
| Nearctic | Zoogeographic realm | endemic | 27547 |
| Nelson-Saskatchewan | River (basin) | native | 78981 |
| Palearctic | Zoogeographic realm | introduced | 5723 |
| Yukon | River (basin) | native | 78812 |