• Task: Feasibility study

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• Capacity: 990 KW

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• Status: Completed

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Salient features: as per Feasibility Study Report, 2010
Location		Tinekhu Khola, Suri/Jhaku VDC’s, Dolkha District, Janakpur Zone, Central development region of Nepal
Latitude		27°44’07” N to 27°45’15” N
Longitude		86°10’45” E to 86°12’06” E.
Geology
Region		Middle Mountain Zone
Rock composed		Quartzite, Schist, Augen Gneiss, Phyllite
Geotechnical zoning		Fair to good
Hydrology
Catchment area		21 km2
90% firm flow in the driest month		250 lps
Design flow (Q57)		350 lps
Flood 1 in 100 years		127 m3/sec
Weir
Type		Concrete and gabion
Length		18.25m
Crest level		1398.6 m amsl
Intake
Type		Side intake
Number of orifice		3
Orifice Size		0.4 x 1.00 m (w x h)
Sill level upper orifice		1398.90 m amsl
Sill level bottom orifice		1397.90 m amsl
Number of gates		2
Gravel trap
Type		Surface
Length		3.0 m (including transition)
Width		1.5 m
Height		2.8 m
Normal water level		1398.30 m amsl
Spillway level		1398.60 m amsl
Gravel Flushing Canal
Type		Surface
Length		7.40 m
Breadth		0.5 m
Height		0.5 m
Number of gates		2 nos.
Approach canal
Type		Reinforced concrete rectangular culvert
Length		9.15 m
Bottom width		0.8 m
Height		0.8 m
Settling basin
Type		Surface
Size		23.5 x 1.5 x 3.0m (l x b x h)
No. of chambers		2
Normal water level		1398.27 m amsl
No. of flushing channel		2
Sediment Flushing Channel
Type		Surface
Length		8.0 m
Breadth
Height		0.5 m
No. of gates		2
Headrace pipe
Material		High Density Polyethylene (HDPE)
Length		2046 m
Internal diameter		500 mm
Anchor blocks		43 nos.
Forebay
Type		Surface
Width		3.5 m
Length		4.0 m
Height		4.0 m
Water level		1387.34 m amsl
Penstock Pipe
Material		Steel
Length		960 m
Internal diameter		450 mm
Thickness		8-32 mm
Anchor blocks		16 nos.
Saddle support		107 nos.
Y-Bends		1 no.
Branching		2 pipes of 320 mm internal diameter, 20 m long
Powerhouse
Type		Surface
Length		16.5 m
Breadth		8.0 m
Height		12 m (from foundation level)
Number of generating units		2 (Two) each 495 MW
Turbine type		Horizontal Axis Pelton Turbine
Installed capacity		990 KW
Turbine axis level		985.61 m amsl
Tailrace
Type		Rectangular box culvert
Length of closed duct		40.8 m
Transmission Facilities
Transmission line Length		3 km from Powerhouse to to Singati Sub-station
Voltage level		11 KV
Power and Energy
Gross Head		412 m
Net Head at design discharge		388.40 m
Installed Capacity		990 KW
Gross Annual Energy		7.48 GWh
Net Annual energy		7.10 GWh
Wet Energy		5.20 GWh
Dry Energy		1.90 GWh