| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Adma River | River (basin) | native | 89719 |
| Bhimtal Lake | Lake | native | 89721 |
| Buxa River | River (basin) | native | 89719 |
| Cauvery | River (basin) | native | 43636 |
| Choto Jamuna | River (basin) | native | 100698 |
| Godavari | River (basin) | native | 4832 |
| Jayanti River | River (basin) | native | 89719 |
| Krishna River | River (basin) | native | 43636 |
| Naukuchiatal Lake | Lake | native | 89721 |
| Oriental | Zoogeographic realm | questionable | 4832 |