Salient Features
| S. N. | Features | Description |
| 1 | Location | SanfeBagar Municipality and Mellekh rural Municipality of Achham and Budhi Ganga Municipality of Bajura, District |
| 2 | Type of Project | Peaking Run-of-River |
| 3 | Hydrology | |
| Catchment area (Dam axis) | 1075 km2 | |
| 90% dependable flow | 0.9m3/s | |
| Average annual flow | 53.04 m3/s | |
| Q40 of river | 25.71 m3/s | |
| Design Flood for Spillway (1000 years) | 3900 m3/s | |
| Design flood (100 years) for Stilling basin | 2700 m3/s | |
| PMF | 5100 m3/s | |
| 4 | Reservoir Simulation | |
| Design flow (based on reservoir simualtion) | 26 m3/sec | |
| 5 | Geology | Mostly dominated by Augen Gneiss |
| 6 | Head | |
| Gross | 94.83 m | |
| Net | 86.95 m | |
| 7 | Dam | |
| Dam Type & Size | Conventional Concrete Gravity 86m x 44m (L x H) with 8.35m top width |
|
| Spillway | 3 Nos. @8m x 12.50m x (W x H) | |
| Under sluice Size | Single Bay, 4m x 12.5m (W x H) | |
| Intake Type, Nos. & Size | Side Intake, 2 no. 4.8 m (W) X 6.4 m (H) | |
| Flood Level at 100 Year (Gates open) | El.715 masl (Gates opening 6.5m) | |
| Flood Level at 1000 Year Flood | El.720 masl (Gates opening 8.5m) | |
| Flood Level at Check Flood | El. 721 masl (all gates fully opened) | |
| 8 | Settling Basin | |
| Type | Closed, Surface, Dufour Type, Double Chamber | |
| No. of Chambers | 2 | |
| Size | 92 m (L) x 12 m (W) x 13 m (H) | |
| Flushing system | Conventional type | |
| 9 | Peaking Pond | |
| Full Supply Level (FSL) | 718 | |
| Minimum Operating Level (MOL) | 712 | |
| Storage at FSL | 1.05 MCM | |
| Length of reservoir | 2.06km | |
| Storage area at FSL | 0.12km2 | |
| 10 | Tunnel | |
| Feeder Tunnels | ||
| Number and Size | 2 No. @ 92m and 109.5 m with 2.5m dia. | |
| Headrace Tunnels | ||
| Length | 5.5602 km | |
| Size | 4.77 m excavated diameter, D-shape | |
| 4.0 m finished diameter | ||
| Lining | Concrete lining throughout the length | |
| 11 | Surge Shaft | |
| Type | Restricted Orifice type, underground | |
| Size | 53.35m (H) x 7.5 m (F) | |
| Maximum Upsurge (Zmax) | 734.50 masl | |
| Minimum Down surge (Zmin) | 694.31 masl | |
| 12 | Penstock | |
| Type | Covered and exposed | |
| Size | 182.80 m (L), 2.8 m (F) | |
| thickness | 10 to 20 mm | |
| 13 | Powerhouse | |
| Type | Surface | |
| Size | 39.7 m (L) x 14.8 m (B) x 26.30 m (H) | |
| 14 | Tailrace Channel | Box culvert type 69.9m (L) x 4.45 m (B) x 3.00 m (H) with free board and cover |
| 15 | Turbine | |
| Type, Orientation | Francis, Horizontal Axis | |
| No. of Units | 2Nos. | |
| Unit Capacity | 10 MW | |
| 16 | Generator | |
| Type & Number | 3 Phase Synchronous AC, 2 Nos. | |
| Unit Capacity | 12.93 MVA | |
| 17 | Installed Capacity | 20 MW |
| 18 | Annual Energy Generation | 109.61 GWh |
| Dry Energy | 33.54 GWh | |
| Wet Energy | 76.07 GWh | |
| 19 | Financial Indicators | |
| Total Project Cost Including Transmission Line | NRs. 10334059130 | |
| Total Project Cost excluding Transmission Line | NRS. 6369283055 | |
| Net Present Value (NVP) @ 2.56% | MNRs.1463.76 | |
| Internal Rate of Return | 11.13% | |
| EIRR | 9.54% | |
| DSCR | 1.83 | |
| Project Payback period (simple) | 9.54 years | |
| Cost per MW (excluding Transmission Line) | NRS.318464152.77 | |
| 20 | Transmission Line | |
| Length | 84.3 km | |
| Voltage/circuit | 132 kV/double circuit | |
| 21 | Substations | |
| Number | 3 | |
| Locations | One at Thapagaon (near Powerhouse) | |
| One at Chapartola | ||
| One at Pahalmanpur (bay extension) |