| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Formone |  | Orcia | 16,000 | 43.0184898400 | 11.7327365900 | Map | |||||
| Vivo (Fluss) |  | Orcia | 15,000 | 42.9155940000 | 11.5270400000 | Map | |||||
| Ente (Fluss) |  | Orcia | 14,000 | 42.9747000000 | 11.5289930000 | Map | |||||
| Asso (Fluss) |  | Orcia | 35,000 | 43.0101080000 | 11.5581320000 | Map |