| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivière aux Rats (Rivière Mistassini) | 2,465,999,872 | Mistassini River | 185,000 | 48.8919020000 | -72.2406686000 | Map | |||||
| Rivière Ouasiemsca | Mistassini River | 190,000 | 49.0008379000 | -72.4785922000 | Map | ||||||
| Mistassibi River |  | 9,324,999,680 | Mistassini River | 298,000 | 48.8844444444 | -72.2180555556 | Map |