| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Caniapiscau River |  | 47,710,998,528 | 480 | Caniapiscau reservoir | Koksoak River | 737,000 | 57.6716666667 | -69.4866666667 | Map | ||
| Rivière aux Mélèzes |  | 42,735,001,600 | 17 | Koksoak River | 434,000 | 57.6761111100 | -69.4883333300 | Map |