| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Gratzenbach (Rettenbach) |  | 1,300,000 | Rettenbach (Laßnitz) | 1,600 | 46.8875000000 | 15.0681000000 | Map | ||||
| Stoffbach |  | 3,100,000 | Rettenbach (Laßnitz) | 2,700 | 46.8958000000 | 15.0431000000 | Map |