| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Angheluș River | Râul Negru | ||||||||||
| Brețcu (river) | Râul Negru | ||||||||||
| Cașin (Râul Negru) |  | Râul Negru | 45.9810000000 | 26.1678000000 | Map | ||||||
| Cernat River (Râul Negru) | Râul Negru | ||||||||||
| Covasna (Râul Negru) | Râul Negru | 45.8315000000 | 25.9619000000 | Map |