| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Meteren Becque | Lys | 18,600 | |||||||||
| Groeningebeek | Lys | 50.8290890000 | 3.2751060000 | Map | |||||||
| Becque de Neuville | 3,100,000 | Lys | 26,000 | ||||||||
| Becque du Biez | 18 | Lys | 6,700 | ||||||||
| Bourre | 30 | Lys | 19,300 |