| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Idrija | Soca | ||||||||||
| Idrijca |  | 34 | 598,000,000 | Soca | 60,000 | 46.1517000000 | 13.7404000000 | Map | |||
| Torre (river) |  | 529 | Soca | 70,000 | 45.8150000000 | 13.4270000000 | Map | ||||
| Vipava (river) |  | 598,000,000 | 110 | Soca | 49,000 | 45.8448000000 | 13.9635000000 | Map | |||
| Koritnica (river) |  | Soca | 46.3300540000 | 13.5754530000 | Map |