Type of Development |
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Peaking Run-of-River (PRoR) |
Location |
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Bagmati Province, Dolakha District, Bigu Rural Municipality Ward No. 1, |
Headworks Location |
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Bigu Rural Municipality Ward No. 1, Lamabagar |
Powerhouse Location |
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Bigu Rural Municipality Ward No. 1, Gongar Gaon |
Maximum Output |
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456 MW |
Annual Energy |
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2,281 GWh |
Gross Head |
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822 m |
Design Discharge |
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66.0 m 3 /sec |
Hydrology |
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Catchment Area |
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1,745 km 2 |
Min. Mean Monthly Flow |
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14.1 m 3/sec. |
Mean Annual Flow |
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67.2 m3/sec. |
Design flood Q1,000 |
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885.0 m3/sec |
Diversion Dam |
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22 m x 60.0 m (H x L) |
Live Storage |
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1.2 Million m3 |
Settling Basins |
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2 Nos. L=225 m |
Headrace Tunnel |
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8.4 km (Cross Sectional Area = 32.14 m2) |
Penstock (Vertical Shaft and Horizontal Tunnel) |
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1,134.0 m |
Power House (Underground) |
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142.0m x 13.0m x 25.0 m
(L x B x H) |
Number of units |
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6 |
Tailrace Tunnel |
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2.9 km (Cross Sectional Area = 35.0 m2) |
Access Road from Charikot of Dolakha District |
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68.0 km |
Transmission line |
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220 kV Double Circuit, 47.0 km (Gongar to Khimti Substation) |
Construction Cost |
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NRs.35.29 Billion equivalent to US$ 441 Million (Excluding Interest During Construction) |
Construction Time Period |
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6 Years |