| River | Hewa Khola | |
| Total Catchment above Intakes | 66 Km2 | |
| Catchment above Jhutre HW | 4.47 Km2 | |
| Catchmen above Khakuwa HW | 6.83 Km2 | |
| Average Precipitation | 2487 mm/year | |
| 100 year Design flood @ Intake | 299 m3/sec | |
| Minimum Monthly flow | 0.86 m3/sec | |
| Environmental Release | 0.086 m3/sec | |
| Design Discharge to Plant Q40% | 4.2 cumecs | |
| Jhutre Collection discharge | 284 lps | |
| Khakuwa Collection discharge | 435 lps |