| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Kankai River |  | 1,148,000,000 | 3,200 | Mahananda River | 180,000 | 25.8830555556 | 87.7980555556 | Map | |||
| Mechi River | Mahananda River | 100,000 | 26.2294444400 | 87.9513888900 | Map | ||||||
| Punarbhaba River |  | Mahananda River | 160,000 | 26.0177920000 | 88.5466160000 | Map |