| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Biette |  | 21,000,000 | 121 | Lawe | 8,900 | ||||||
| Blanche (Pas-de-Calais) | Lawe | 4,500 | |||||||||
| Brette (rivière) | Lawe | 7,000 | |||||||||
| Loisne | Lawe | 28,000 | 50.5890800000 | 2.7033800000 | Map |