Salient Features Lower Charnawati Hydropower Project 6.8 MW

Salient Features Lower Charnawati Hydropower Project 6.8 MW

Project Location
Development Region

Zone

District

Intake Site

Power House Site

Project Boundary

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Central

Janakpur

Dolakha

Bhimeshwor Municipality

Bhimeshwor Municipality

Latitude – 270 3637” N to 270 38’ 12” N

Longitude – 860 02’ 23” E to 860 04’ 33” E

General  
Name of River

Nearest Town

Type of Scheme

Gross Head

Net Head

Installed Capacity

Average Annual Saleable Energy

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Charnawati River

Charikot

Cascade (Run-of-River)

203 m

194.15 m

6.8  mW

37.14 GWh

Hydrology  
Catchment Area

Mean Annual Discharge

Design Discharge

Probability of Exceedance

Riparian Release

Design Flood Discharge

Average Annual Precipitation

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96.92 km2

5.20 m3/s

4.19 m3/s

40 %

0.030 m3/s

401 m3/s (100 Yr. flood)

1800 mm

Diversion Weir/ Undersluice  
Type of Weir

Crest Length of Weir

Height of Overflow

Crest Elevation

Design Flood Level

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Free Overflow Type

18.0 m

2.6 m (Excluding Foundation)

1062.26 m

1065.20 m

Intake Cum Gravel Trap  
Type of Intake

No. of Opening

Size of Intake (W x H)

Intake Sill Level

Type Gravel Trap

Size (L B x H) m

Particle to be settled

Flushing Canal

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Side Intake

Two

(1.4 x 0.9) m

1061.00 m

RCC (open) Hopper Shaped

(7.0 x 3.5 x 3.85) m

> 0.2 mm

28.36 m

Approach Canal  
Type

Size (L x B x H) m

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RCC Rectangular Open Canal

(28.53 × 1.7 × 1.7) m

Settling Basin  
Type

No of chamber

Dimension (L x B x H) m

Inlet Transition Length

Particle Size to be Settled

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 RCC Hopper Shaped

1

(42.0 × 6.0 × 5.2) m

14.33 m

> 0.2 mm

Link Canal- I
Type

Size (L x B x H) m

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RCC Rectangular Open Canal

( 13.85 × 1.7 × 1.7) m

Plunging Pool    
Type

No. of chamber

Size (L x B x H) m

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RCC Rectangular (Open)

1

(14.5× 3.0 × 7.4) m

Link Canal-II  
Type

Size (L x B x H) m

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RCC Rectangular Open Canal

( 39.20 × 1.7 × 1.7) m

Link Canal – III
Type

Size (L x B x H) m

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RCC Rectangular Open Canal

( 40.26 × 2.4 × 2.7) m

Regulating pond  
Type

Dimension (L x B x H) m

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Rectangular

(11.0 × 5.0 × 6.3) m

Headrace Pipe    
Diameter

Length

Thickness

No. Of Anchor Block

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1.9 m

4850 m

10 – 12 mm

92

Tunnel    
Type

Dimension

Length

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Inverted D-Shaped

(2.1 × 2.55) m

180 m

Surge Tank    
Type

Diameter

Height

Up Surge Level

Down Surge Level

Normal Operation Level

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RCC, Circular

4.0 m

24 m

1057.59 m

1045.98 m

1046.43 m

Penstock Pipe    
Diameter

Length

Thickness

No of Anchor Block

No. of Saddle Support

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1.4 m

366 m

12 – 30 mm

9

21

Power House
Type

Size (L × B × H)

Turbine Axis Level

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Surface, RCC Frame Structure

(33 x 13.3 x 14.5)m

 

Tailrace Canal    
Type

Size(L × B × H)

Tailrace Water Level

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RCC Open Canal

(125.0 × 1.9 × 1.75) m

Turbine    
Type

Number

Rated Output Capacity per Unit

Efficiency

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Horizontal Axis Pelton

Two

3400 kW

90%

Generator    
Rated output capacity per unit

No. of unit

Efficiency

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4.25 MVA

2

96%

Transmission Line    
Voltage Level

Length (approx)

From

To

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33 kV

1.5 km

Switchyard of LCHPP

Makai Bari – Jiri Transmission Line near Nayapul

 

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