| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bidente-Ronco |  | 4 | Fiumi Uniti | 135,000 | 44.4000000000 | 12.2000000000 | Map | ||||
| Montone (river) |  | 5 | 900 | Fiumi Uniti | 90,000 | 44.4000000000 | 12.2000000000 | Map |