Raidak

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Raidak
Wang Chhu
Pedestrian cantilever bridge over the Wang Chhu in Thimphu

Pedestrian cantilever bridge over the Wang Chhu in Thimphu

Data
location Bhutan , West Bengal ( India )
River system Brahmaputra
Drain over Gangadhar  → Brahmaputra  → Indian Ocean
Headwaters Himalayas
27 ° 41 ′ 17 ″  N , 89 ° 26 ′ 25 ″  E
Association with Sankosh to Gangadhar Coordinates: 26 ° 18 ′ 54 "  N , 89 ° 48 ′ 28"  E, 26 ° 18 ′ 54 "  N , 89 ° 48 ′ 28"  E

length 370 km
Right tributaries Paro Chhu , Ha Chhu
Medium-sized cities Thimphu
Small towns Tufanganj
The relief map shows the torsa in the Duar plain that flows west of the Gangadhar from the north into the Brahmaputra (naming of the raidak on the map is incorrect, the line points to the river Torsa)

The relief map shows the torsa in the Duar plain that flows west of the Gangadhar from the north into the Brahmaputra (naming of the Raidak on the map is incorrect, the line points to the river Torsa)

The Raidak , also known as Wang Chhu or Wong Chhu in Bhutan , flows as a cross-border river through Bhutan and the Indian state of West Bengal .

course

Bhutan

The Wang Chhu or Raidak has its source in the Himalayas. Its upper course is also known under the name Thimphu Chhu ( Dzongkha : "River of Thimphu"). Its appearance in Bhutan is characterized by a high flow velocity and a rocky river bed. Between Thimphu and the mouth of the right tributary Paro Chhu , the Wang Chhu flows in a comparatively wide valley, after the confluence it enters a rugged, winding high mountain valley with an approximately south-southeast direction.

When passing the monastery fortress Trashi Chhoe Dzong on the northern outskirts of Thimphu, the river bed lies at an altitude of 2121  m , when it exits the high mountain range into the Duar plain at a height of 90 meters above sea level.

West Bengal

The Raidak enters the Jalpaiguri District in West Bengal in the river plain south of the Himalayas and then flows through the Koch Bihar District . North of Tamarhat the Raidāk River combined with the approach flowing from east Sankosh to Gangadhar .

Chukha power plant

About 9 km as the crow flies south of the confluence of the right tributary Ha Chhu , India built the turnkey Chukha power plant from 1974 to 1988, which has since generated a total of 336 MW with 4 generators. The financing provided by India consisted of 60% of a grant and 40% of a low-interest loan, the southern neighboring state receives the electricity that Bhutan does not need at low prices without alternative.

Tala power plant

About 10 km as the crow flies downstream from the Chukha power plant, the Tala power plant was built from 1997 to 2007 , which generates a total output of 1020 MW with a total of six 170 MW generators. It is the largest joint project to date between India and Bhutan in the field of environmentally friendly energy generation using hydropower.

Web links

Commons : Raidak  - collection of images, videos and audio files

Individual evidence

  1. Chhukha Hydropower Plant accessed on www.drukgreen.bt on December 19, 2013