| 1 |
General |
|
| a |
Name of the project |
Betan Karnali Hydroelectric Project |
| b |
Type of the project |
PRoR |
| c |
Development region |
Western |
| d |
District |
Surkhet and Achham |
| f |
Stream/River |
Karnali River |
| g |
Easting |
810 24'42'' E to 810 11'43'' E |
| h |
Northing |
280 56' 04'' N to 280 50' 57'' N |
| i |
Nearest Highway |
Karnali Highway |
| j |
Climate |
Warm |
| 2 |
Hydrology |
|
| a |
Catchment area |
22555 Km² |
| b |
Annual mean flow |
567 m3/s |
| c |
Maximum monthly Discharge |
1679 m3/s |
| d |
Minimum monthly discharge |
136 m3/s |
| e |
Design Discharge Q50 |
373.10 m3/s |
| 3 |
Dam |
|
| a |
Type of Dam |
Earthen / Concrete (Optional) |
| b |
Elevation of Dam Location |
415 amsl |
| c |
Dam Height |
50 m Approximate |
| d |
Volume of water Reserved |
125 MCM |
| 4 |
Water Conveyance System |
|
| a |
Type |
Headrace tunnel, surge shaft / penstock pipe |
| b |
Length |
6.6 Km headrace tunnel from dam site followed by penstock tunnel 345m. |
| c |
Gross Head |
220m |
| d |
Net Head |
90 % of Gross Head |
| 5 |
Penstock |
|
| a |
Length |
345 m |
| b |
Type |
Tunnel |
| 6 |
Powerhouse |
|
| a |
Type |
Underground |
| b |
Installed Capacity |
688MW |
| c |
Elevation |
250 amsl |
| d |
Number of Generating Units |
3 |
| e |
Type of Turbine |
Francis, horizontal shaft |
| 7 |
Tailrace Tunnel |
|
| a |
Type |
Tunnel |
| b |
Length |
100 m Approximate |
| 8 |
Power and Energy |
|
| a |
Power |
688 MW |
| b |
Dry Season Energy |
1527.09 GWhr |
| c |
Wet Season Energy |
2850.77 GWhr |
| d |
Total annual energy |
4377.87 GWhr |
| 9 |
Transmission Lines |
|
| a |
Length, Voltage |
Nearest NEA sub Station |
| 10 |
Approach Road |
Already available road up to powerhouse area. |
