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Drangme Chhu River
Drangme Chhu River drains a large portion of central and eastern Bhutan. The word Chhu means "river" or "water" in Dzongkha. The river rises in the western portion of Arunachal Pradesh, India, and flows southwest first into the Bhutanese district (or dzongkhag) of Trashiyangtse and then into Tashigang. The south flowing Kulong and the west flowing Gamri join the Drangme near the town of Tashigang. Continuing to the southwest, the river forms the boundary between Tashigang and Mongar, and then between Pemagatsel and Mongar. Along this stretch is the confluence with another major tributary, the south flowing Kuru, and a name change to the Manas River. Shortly before turning south and leaving Bhutan, the river is augmented again with the waters of the south flowing Mangde Chhu River. The lowest point in Bhutan is at the point where the Manas Chhu river crosses into India (Assam) near the town of Manas. The river empties into the Brahmaputra River some 50 air miles south of the Bhutanese border. Mangde Chhu River Mangde Chhu River flows in central Bhutan traversing roughly north-south. The river rises in Wangdue Phodrang district (or dzongkhag in Dzongkha), near Gangkhar Puensum (Bhutan's highest peak at 7546 m). Bhutan's main east-west highway crosses the Mangde Chhu approximately 8 km west of Trongsa. South of Trongsa, the river drains the eastern slopes of the Black Mountains (Bhutan), and forms the eastern boundaries of Black Mountain National Park and Royal Manas National Park. Another highway follows the river south from Trongsa to Shemgang. The highway leaves the river at Tingtinbi, and eventually reaches the Indian border at Gelegphug. South of Tingtinbi, the Mangde is joined by the Bumthang River from the east, and is known as the Tongasa. Shortly before entering India in Assam, the Manas River flows into the river from the east, and the river exits Bhutan near Manas. Important towns and areas through which the Trongsa - Gelegphug road passes are Shemgang (Shamgong), Taama, Bataase, and Surey rice fields. The road and bridges were built by the Indian Border Roads Organisation. Among the number of bridges built across this river, two are noteworthy. They are the Bailey suspension bridges of about 360 feet span, one near Hathisar and the other at Tama built between 1963 and 1965. A rafting expedition down the river was subject of the 2007 Discovery Channel TV documentary Adventure Bhutan.
Mo Chhu Mo Chhu is a major river in Bhutan. The word "Chhu" means "river" or "water" in Dzongkha, the official national language in Bhutan. The river rises in Gasa district (or dzongkhag) near the border between Bhutan and Tibet. From there, the Mo Chhu flows generally southward to Punakha in central Bhutan, where it joins the Pho Chhu from the northeast. The confluence of the two streams is immediately below the Punakha dzong, which is the winter home of the Central Monk Body and the Je Khenpo. The combined streams are then joined by the Dang Chhu near the town of Wangdue Phodrang, and the name of the river becomes the Puna Tsang Chhu. The river then flows through Dagana and Tsirang districts. After leaving Bhutan near the town of Kalikhola, the river enters Assam in India and is known as the Sankosh. The Sankosh ultimately empties into the Brahmaputra.
Raidak is a major river in Bhutan. The river rises in the Himalaya and empties into the Brahmaputra in India. It passes through the Jalpaiguri district and Cooch Behar district in India. It streams beside a beautiful city Tufanganj. It gives us water through the years.
Sankosh Sankosh is a river that rises in northern Bhutan and empties into the Brahmaputra in the state of Assam in India. In Bhutan, it is known as the Puna Tsang Chhu below the confluences of several tributaries near the town of Wangdue Phodrang. The two largest tributaries are the Mo Chhu and Pho Chhu, which flow together at Punakha. The Punakha dzong, which is situated immediately above the confluence of the two rivers, is one of the most beautiful dzongs in Bhutan and the winter residence of the Central Monk Body. The upper reaches of the Pho Chhu are susceptible to ice blockages, and the dzong has been damaged on several occasions by glacial outburst floods (GLOF). At Wangdue Phodrang, (altitude 1364 m), the river is joined by the west flowing Dang Chhu and it enters a precipitous gorge. The highway running south from Wangdue Phodrang to Dagana follows the river for much of its course. Near the town of Takshay is the confluence with the west flowing Hara Chhu. The last major Bhutanese tributary is the Daga Chhu.
Torsa River Torsa River (also spelt Torsha and also known as Machu and Amo Chu) rises from the Chumbi Valley in Tibet, China, where it is known as Machu. It flows into Bhutan, where it is known as the Amo Chu. It has total length of 358 km, out of which 113 km in China and 145 km in Bhutan before flowing into the northern part of West Bengal in India. It flows past the important border towns of Phuntsholing (in Bhutan) and Jaigaon (on the Indian side of the border) and past the great tea estate of Dalsingpara and the Jaldapara Wildlife Sanctuary. The beautiful landscape here is ideal for family picnics, and the wildlife sanctuary has tigers, rhinoceros and deer of many varieties. a tributary known as Buri Torsa meets Jaldhaka. Ghargharia River meets with Torsa in the Tufanganj subdivision, near Deocharai and Balarampur Torsa meets with Kaljani and it then flows into Bangladesh by the name of Kaljani and meets with Brahmaputra in BD. A distributary known as Buri Torsa meets Jaldhaka. Ghargharia river meets with Torsa in the Tufanganj subdivision, near Deocharai and Balarampur Torsa meets with Kaljani and it then flows into Bangladesh by the name of Kaljani and meets with Jamuna there.
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