| Capacity |
57 MW |
| Development Region |
Western |
| Zone |
Gandaki |
| District |
Lamjung |
| VDC |
Phaleni & Dhodeni |
| River |
Dordi |
| Latitude |
28018’50” N – 28020’35” N |
| Longitude |
84033’40” E – 84035’10” E |
| Access Road |
Existing Road-Kathmandu-DumreBhoteodar-Black Topped Road Bhoteodar-Chhote Khola : Earthen Road Chhote Khola- S.Dordi HW (opened by company), S.DordiHW/Himchuli PH to Hinchuli Dordi HW (to be opened) |
| Type of Scheme |
Run-off-River |
| Installed Capacity |
57MW +10% CoL i.e 59.4 MW |
| Design Plant Discharge |
8.29 m3 /sec at Q40% |
| Rated Design head |
787.40 m |
| Gross Head |
798.20 m |
Hydrology
| Total Catchment Area |
120.43 sq km |
| Catchment Area Dordi |
96.1 sq km |
| Catchment Area Dudh |
15.32 sq km |
| Catchment Area Yulo |
5.13 sq km |
| Catchment Area Kyuta |
3.88 sq km |
| Total Design Discharge |
8.29 m3 /sec (Q40%) |
| Design Discharge Dordi Intake |
6.62 m3 /sec (Q40%) |
| Design Discharge Dudh Intake |
1.05 m3 /sec (Q40%) |
| Design Discharge Yulo Intake |
0.35 m3 /sec (Q40%) |
| Design Discharge Kyuta Intake |
0.27 m3 /sec (Q40%) |
| Annual Rainfall above Intake |
2540 mm |
Headwork
| Diversion structure |
Free flow weir with boulder Lining |
| Length of weir |
23m |
| Weir crest elevation |
EL 2695msl |
| Height of weir |
4 m from U/s Apron. |
| Under sluice |
1 Vertical Sluice gate |
| Crest of Sluice |
EL 2691msl |
| Size of Sluice gate (bxh) |
3.5m x3.0m |
| Intake Type |
Side Intakes |
| Size of Intake openings |
3.0×1.2 – 3 nos |
| Crest elevation of Intake |
El 2693.8 msl |
Gravel Trap
| Type |
Rectangular shaped |
| Particle Size to be settled |
20mm |
| Size of Gravel Trap |
4.20mx2.8-4.0 m; 20 m length |
| Bed Slope |
1:10 |
Connecting Tunnel
| Tunnel Length |
395.5m including branches |
| Type |
Inverted “D” Shape, Concrete Lined |
| Size of Tunnel |
4.2mX4.2mm and 2.6mX 2.6m branch |
| Average tunnel slope |
1:250 |
| Nos. of bend |
2 no including |
Desander
| Type |
Underground Dufour Double Chamber Continuous Flushing Type |
| Particle Size to be settled |
0.15mm |
| Width x Height of Desander |
2 Chamber each of 9m X 10m |
| Sattling Length |
80.80 m |
| Inlet Transition Length |
19.80 m |
| Outlet Transition Length |
10 m |
| Bed Slope |
1:50 |
| Operating level at Desander end |
2693.30 msl |
| Desander Inlet Gates |
2.6×2.6 m Vertical Sliding Gates |
| Desander Inlet Gates Invert level |
2693.00 msl |
Flushing Tunnel
| Type |
Inverted “D” Shape, |
| Size of Tunnel |
4mX4m |
| Length |
108 m |
| Bed Slope |
1:75 |
Headrace Tunnel
| Type |
Inverted “D” Shape, Low Pressure Full Flow |
| Tunnel Length |
4.2km |
| Size of Tunnel |
2.8mX2.8m |
| Average tunnel slope |
1:250 |
| Nos. of bend |
4 no. |
| Rock Trap |
3.3mX5.5m; 25 m length |
Dudh Khola Adit And Dudhkhola Collection
| Type |
Inverted “D” Type, Shotcrete lined with Collection Pipe of Dudhkhola |
| Size of Tunnel |
3 m X 2.8 m |
| Length of Dudh Khola Adit |
81.65 m |
| Invert Level of Dudh Khola Portal |
EL 2681.2m |
| Slope |
1:250 |
