| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Great Lakes | Lake | native | 5723 |
| Mackenzie | River (basin) | native | 78982 |
| Mississippi River | River (basin) | native | 41482 |
| Mississippi-Missouri | River (basin) | native | 10294 |
| Missouri River | River (basin) | native | 10294 |
| Nearctic | Zoogeographic realm | endemic | 5723 |
| Nelson-Saskatchewan | River (basin) | native | 78981 |
| Rio Grande | River (basin) | native | 78807 |
| St. Lawrence | River (basin) | native | 5723 |
| St. Lawrence Complex | River (basin) | native | 81264 |