| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sacco (river) |  | 16 | 1,530,000,000 | Garigliano | 87,000 | 41.5202777800 | 13.5427777800 | Map | |||
| Gari (river) | Garigliano | 41.4333333300 | 13.8333333300 | Map | |||||||
| Liri |  | 4,140,000,000 | 1,325 | Monti Simbruini | Garigliano | 120,000 | 42.0029000000 | 13.2830000000 | Map |