| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Río Mansoa |  | Atlantic Ocean | 193,000 | 11.7583300000 | -16.0000000000 | Map | |||||
| Corubal River | 305 | 20,000,000,000 | Geba River | 600,000 | |||||||
| Cacheu River |  | Atlantic Ocean | 257,000 | 12.1878000000 | -16.3147000000 | Map | |||||
| Geba River |  | Atlantic Ocean | 540,000 | 12.6230000000 | -13.6515833333 | Map | |||||
| Río Grande de Buba |  | Atlantic Ocean | 11.5333300000 | -15.4166700000 | Map |