| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ruisseau Vacher | L'Assomption River | 45.9233305556 | -73.4302694444 | Map | |||||||
| Ouareau River |  | 387 | Lake ouareau | L'Assomption River | 83,800 | 46.3173250000 | -74.1278111111 | Map | |||
| Grande rivière Swaggin | 423 | L'Assomption River | 8,700 | 46.3097222222 | -73.9397222222 | Map | |||||
| Rivière de l'Achigan |  | 662,000,000 | 200 | L'Assomption River | 83,800 | 45.9238888889 | -73.9508333333 | Map | |||
| Rivière de la Boule | 483 | L'Assomption River | 14,700 | 46.2730555556 | -73.7580555556 | Map |