Constructed at a narrow braid belt of the river, it is 4.8  km long with a platform 18.5 m wide, and it is used to carry railroad traffic as well as gas, power and telecommunication lines. [30][31] From east to west: National Waterway 2 (NW2) is 891 km long Sadiya-Dhubri stretch of Brahmaputra River in Assam.[33][34]. This increase in discharge due to the significant retreat of snow gives rise to severe catastrophic problems such as flood and erosion. [citation needed], The lower reaches are sacred to Hindus. [6] It is a classic example of a braided river and is highly susceptible to channel migration and avulsion. The catchments area of Brahmaputra in Tibet is 2, 93,000 Sq. Rising temperature is one of the major cause of snow-melting at the upper Brahmaputra catchment. The river is 3,969 km (2,466 mi) long, and its drainage area is 712,035 km2 (274,918 sq mi) according to the new findings, while previous documents showed its length varied from 2,916 km (1,812 mi) to 3,364 km (2,090 mi)and its drainage area between 520,000 and 1.73 million km2. After passing Pi (Pe) in Tibet, the river turns suddenly to the north and northeast and cuts a course through a succession of great narrow gorges between the mountainous massifs of Gyala Peri and Namcha Barwa in a series of rapids and cascades. Some water still flows through that course, now called the Old Brahmaputra, as a distributary of the main channel. It flows for about 35 km (22 mi) southward after which, it is joined by the Dibang River and the Lohit River at the head of the Assam Valley. The river drains the Himalayan east of the Indo-Nepal border, south-central portion of the Tibetan plateau above the Ganga basin, south-eastern portion of Tibet, the Patkai-Bum hills, the northern slopes of the Meghalaya hills, the Assam plains, and the northern portion of Bangladesh. The Lahajang and the Elengjany were also important rivers. In Bangladesh, the Brahmaputra is joined by the Teesta River (or Tista), one of its largest tributaries. PhD Thesis, Department of Geography, North Eastern Hill University, Shillong. Copyright © 2020 Bennett, Coleman & Co. Ltd. All rights reserved. The lives of many millions of Indian and Bangladeshi citizens are reliant on the Brahmaputra river. In a meeting of scientists at Dhaka at 2010, 25 leading experts from the basin countries issued a Dhaka Declaration on Water Security[29] calling for the exchange of information in low-flow periods, and other means of collaboration. The average discharge of the river is about 19,800 m3/s (700,000 cu ft/s),[4] and floods reach about 100,000 m3/s (3,500,000 cu ft/s). Tomorrow is different. Thereafter, the river turns south and southwest and flows through a deep gorge (the "Yarlung Tsangpo Grand Canyon") across the eastern extremity of the Himalayas with canyon walls that extend upward for 5,000 m (16,000 ft) and more on each side. [7] It is also one of the few rivers in the world that exhibits a tidal bore. The Nyang River joins the Tsangpo from the north at Zela (Tsela Dzong). This river is often called the Tsangpo-Brahmaputra river. Choose your reason below and click on the Report button. Throughout the years, bars, scroll bars, and sand dunes are formed at the edge of the flood plain by deposition. This has been denied by the Chinese government for many years. When the military is never going to cross LAC, and recuperate India in its entity and stand up for Tibetians, it is disgraceful and waste of money, energy and effort on part of the army, ministry and worthless opposition. In Renault's time, the Brahmaputra as a first step towards securing a more direct course to the sea by leaving the Mahdupur Jungle to the east began to send a considerable volume of water down the Jinai or Jabuna from Jamalpur into the Monash and Salangi. The growth of the Ganga-Brahmaputra Delta is dominated by tidal processes. Between Dibrugarh and Lakhimpur Districts, the river divides into two channels—the northern Kherkutia channel and the southern Brahmaputra channel. Furthermore, the fish caught both on the floodplain during flood season and from the many floodplain ponds are the main source of protein for many rural populations. The silt dug out by the dredging of the river will be utilized for the construction of the road. Several researchers have hypothesized that the underlying structural control on the location of the major river systems of Bangladesh. A region of significant tectonic activity has developed in the Jamuna River and is associated with the Himalayan uplift and development of the Bengal foredeep. In the middle of the 18th century, at least three fair-sized streams flowed between the Rajshahi and Dhaka Divisions, viz., the Daokoba, a branch of the Tista, the Monash or Konai, and the Salangi. This erosion has, however, destroyed so much land that it has caused 0.7 million people to become homeless due to loss of land. The snow and glacier melt contribution to the total annual runoff is about 27%, while the annual rainfall contributes to about 1.9m and 19,830 m3 /s of discharge. By 1830, the old channel had been reduced to its present insignificance. During the monsoon season (June–October), floods are a very common occurrence. Presently, the river's erosion rate has decreased to 30m per year as compared to 150m per year from 1973 to 1992. Brahmaputra means "son of Brahma" in Sanskrit. From an analysis of maps of the river between 1776 and 1843, it was concluded in a study that the river avulsion was more likely gradual than catastrophic and sudden, and may have been generated by bank erosion, perhaps around a large mid-channel bar, causing a diversion of the channel into the existing floodplain channel. Huge accumulations of sediment that have been fed from Himalayan erosion has been produced due to the deepening of the Bengal Basin, with the thickness of sediment above the Precambrian basement increasing from a few hundred meters in the shelf region to over 18  km in the Bengal foredeep to the south. One idea about the most recent avulsion is that the change in the course of the main waters of the Brahmaputra took place suddenly in 1787, the year of the heavy flooding of the river Tista. After several smaller channels branch off to feed the Ganga-Brahmaputra delta to the south, the main body of the Padma reaches its confluence with the Meghna River near Chandpur and then enters the Bay of Bengal through the Meghna estuary and lesser channels flowing through the delta. The major important rivers of Assam are the Brahmaputra River, the Kusiyara River and the Barak River. In the 1990s and 2000s, there was repeated speculation that mentioned Chinese plans to build a dam at the Great Bend, with a view to diverting the waters to the north of the country. It is thus difficult to build permanent structures on the river, and protective structures designed to limit the river's erosional effects often face numerous issues during and after construction. It was navigable by country boats throughout the year and by launches only during rains, but at the point as low as Jamalpur it was formidable throughout the cold weather. Ribhaba Bharali. Émilie Crémin. The Brahmaputra enters the plains of Bangladesh after turning south around the Garo Hills below Dhuburi, India. It is navigable for most of its length. He presented a few images to argue that a fault downstream of the Bangabandhu Multipurpose Bridge has affected channel migration. Km; in India and Bhutan is 2,40,000 Sq. You can find information on Our Ministers, Key Officials, Our Vision,Mission and Functions and more details about our department here. The Brahmaputra's bank line migration is inconsistent with time. On the right bank, a second river called the Nyang Qu (Nyang Chu) meets the Tsangpo at Xigazê. The average depth of the river is 140 m (450 ft) and maximum depth is 370 m (1,200 ft). Ambani slips 3 places on global rich list: What spooked RIL stock? [15] The discharge of the river Brahmaputra is highly affected by the melting of snow at the upper part of its catchment. [8], The upper reaches of the Brahmaputra River, known as the Yarlung Tsangpo from the Tibetan language, originates on the Angsi Glacier, near Mount Kailash, located on the northern side of the Himalayas in Burang County of Tibet. Then of river flow due to the melting of snow in the river Brahmaputra basin affects the downstream discharge of the river. Recently the Central Government approved the construction of Brahmaputra Express Highways. The Brahmaputra channel is governed by the peak and low flow periods during which its bed undergoes tremendous modification. Recently, it is suggested that a highway protected by concrete mat along the river bank and excavation of the river bed can curb this menace. Université Paris 8 Vincennes Saint-Denis, 2014. Just west of the town of Sadiya, the river again turns to the southwest and is joined by two mountain streams, the Lohit, and the Dibang. The eastern branch, formerly the larger, but now much smaller, is called the lower or Old Brahmaputra (Brommoputro). There is also the potential for China, India, and Bangladesh to cooperate on transboundary water navigation. As the river follows its braided 700 km (430 mi) course through the valley, it receives several rapidly flowing Himalayan streams, including the Subansiri, Kameng, Bhareli, Dhansiri, Manas, Champamati, Saralbhanga, and Sankosh Rivers. A question about the river system in Bangladesh is when and why the Brahmaputra changed its main course, at the site of the Jamuna and the "Old Brahmaputra" fork that can be seen by comparing modern maps to historic maps before the 1800s. The courses of the Jamuna and Ganga Rivers are first-order controls due to the fact that they are most influenced by the uplifted Plcistoccnc[clarification needed] terraces of the Barind and Madhupur tracts. The junction of these rivers gave the Brahmaputra a course worthy of her immense power, and the rivers to right and left silted up. The basin, especially south of Tibet, is characterized by high levels of rainfall. India's longest river ropeway of 1.82km connecting Guwahati and North Guwahati over the Brahmaputra river in Assam was inaugurated on Monday. Unpublished PhD Thesis, Department of Geography, North Eastern Hill University, Shillong.

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