| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rozan | Oust | 5,400 | |||||||||
| Aff (river) |  | 726,000,000 | 185 | Oust | 66,000 | 47.9997222222 | -2.2372222222 | Map | |||
| Arz (river) | 270,000,000 | 108 | Oust | 66,500 | 47.6559000000 | -2.1113000000 | Map | ||||
| Claie | 354,000,000 | 115 | Oust | 62,000 | 47.9197000000 | -2.7096000000 | Map | ||||
| Lié |  | 477,000,000 | 215 | Oust | 60,000 | 48.3377000000 | -2.8273000000 | Map |