| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Benue | River (basin) | native | 13331 |
| Bia | River (basin) | native | 81269 |
| Cross | River (basin) | native | 31256 |
| Ethiopian | Zoogeographic realm | endemic | 3509 |
| Gambia | River (basin) | native | 28136 |
| Kainji | Lake | native | 188 |
| Moa | River (basin) | native | 3046 |
| Niger | River (basin) | native | 81269 |
| Pampana | River (basin) | native | 13331 |
| Sanaga | River (basin) | native | 51193 |
| Senegal | River (basin) | native | 28136 |
| Sewa | River (basin) | native | 3046 |
| Tano | River (basin) | native | 272 |
| Volta | River (basin) | native | 81269 |
| Wouri | River (basin) | native | 81631 |