| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Bagmati | River (basin) | native | 40948 |
| Brahmaputra | River (basin) | native | 32617 |
| Gaylegphug | River (basin) | native | 40882 |
| Kali Gandaki | River (basin) | native | 40948 |
| Kosi | River (basin) | native | 40948 |
| Manas | River (basin) | native | 40882 |
| Oriental | Zoogeographic realm | endemic | 3443 |
| Sarbhang Khola | River (basin) | native | 40882 |