| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Logne | 231 | Boulogne (disambiguation) | 33,000 | 47.0363888900 | -1.6005555600 | Map | |||||
| Issoire (affluent de la Boulogne) | 73,000,000 | Boulogne (disambiguation) | 33,400 | 47.0030555700 | -1.5425000200 | Map |