Nargum River, a tributary of Dhansiri river originates in Himalayan range at an elevation of 3700m and flows mostly in West- Easterly direction. River is Perennial in nature.

The catchment area at the diversion site is 243.9 km2.
This part of catchment is both rain fed and partly snow melt.
CWC discharge data available for 20 years.
Design discharge is 14.82 Cumecs


Ankaling village, Near Kalaktang , West kameng District , Arunachal Pradesh. Power House Location

 27˚03’56.74”N , 92˚08’05.38”E


18 MW (3 x 6 MW )

Scheme Components

Trench Weir, Spill way, Under Sluice, Head Regulator, Conveyance Channel, Desilting Chambers, Head Race Tunnel, Surge Shaft, Pen Stock, Adits, Power House, Tail Race Channel, Francis Turbines Coupled with Synchronous Generator, Switch Yard and other controlling accessories.

Hydraulic Turbines

Type : Vertical Francis
Design Head : 144 M

FRL at Barrage Intake - 849.2 M
Max. Tail Water Level - 703.0 M
Minimum Tail Water Level - 1575.00 m
Min Net Head - 137.25 M
Design Discharge - 14.82 Cumecs

Expected Generation

75.02 MU of Clean Power in 75% dependable year.

Project Outlay

Rs.160 Cr including Power Evacuation

Power evacuation

25 km of 132 KV line to be terminated at the nearest substation at Bomdila .

Sale of power

Entire power to be sold to Power Trader.


Under Execution.