| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Savinka (Oblast' di Leningrado) | 221,000,000 | Oyat River | 32,000 | 60.5500000000 | 27.1833000000 | Map | |||||
| Ashchina | 331,000,000 | Oyat River | 42,000 | 60.2951290000 | 34.5710370000 | Map | |||||
| Vadzhiga | 126,000,000 | Oyat River | 33,000 | 60.2537640000 | 35.0551340000 | Map | |||||
| Verkhnyaya Kurba | Oyat River | 17,000 | 60.2805220000 | 34.9330960000 | Map | ||||||
| Viliga | Oyat River | 22,000 | 60.3068930000 | 33.8711830000 | Map |