| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pyssa | 1,160,000,000 | Mezen River | 164,000 | 64.1625000000 | 48.8336000000 | Map | |||||
| Irwa |  | 2,260,000,000 | Mezen River | 174,000 | 63.4708550000 | 49.5073630000 | Map | ||||
| Yelva Mezenskaya | 766,000,000 | Mezen River | 84,000 | 64.0391666667 | 49.3100000000 | Map | |||||
| Bolshoy Irych | Mezen River | 32,000 | 63.4246160000 | 49.0250770000 | Map | ||||||
| Bol'shaya Kesloma | Mezen River | 14,000 | 65.1935000000 | 45.4821000000 | Map |