National Desk, Rashedul Islam Biplob , Staff Reporter: Dhaka Office: Alltimenews.com:- Knowing Bangladesh, Jamuna River The Brahmaputra-Jamuna is the second one largest river in Bangladesh and one most of the most important rivers in the worldwide, flowing thru Tibet, China, India and Bangladesh. Actually Jamuna is the downstream direction of the brahmaputra which happened after the earthquake and catastrophic flood between 1782-1787.
Presently the Brahmaputra continues southeast from Bahadurabad (Dewanganj upazila of Jamalpur district) as the vintage brahmaputra and the river among Bahadurabad and Aricha is the Jamuna, not Brahmaputra. The Hydrology Directorate of the bangladesh water development board (BWDB) refers back to the complete stretch because the Brahmaputra-Jamuna.
It originates within the Chemayung-Dung glacier, approximately at 31’30’N and 82’zero’E, some 145 km from Parkha, an essential trade centre among lake Manassarowar and Mount Kailas. The Brahmaputra is referred to as the Dihang in Assam Himalayas in advance than it comes into the Great Plains of Bengal. It enters Bangladesh through Kurigram district (on the border of Kurigram Sadar and Ulipur upazilas). The trendy period of the Tsangpo-Brahmaputra-Jamuna river as a good deal as its confluence with the Ganges is about 2,700 km. Within Bangladesh territory, Brahmaputra-Jamuna is 276 km prolonged, of which Jamuna is 205 km.
The width of the river varies from three km to 20 km but the common width is prepared 10 km. In the rainy season the river is nowhere a whole lot much less than five kilometres massive. The river is in truth a multi-channel braided pattern. Channels of many super sizes, from masses of meters to kilometres massive, and of various styles inclusive of braiding, meandering and anastomosing pattern inside the usa. It is, via maximum of its route inside Bangladesh, studded with bars (chars) plenty of which are submerged at some point of the wet season and makes a unmarried water channel. Thus, through breadth on my own, this river qualifies as one in every of the most critical within the global. The width/depth ratios for individual channels of the Brahmaputra range from 50:1 to 500:1. The gradient of the river in Bangladesh is 0.000077, lowering to zero.00005 near the confluence with the Ganges.
The catchment of the strong Brahmaputra-Jamuna river is about 5,eighty three,000 squarekm of which 293,000 squareKm are in Tibet, 241,000 squareKm in India and only 47,000 squarekm inside Bangladesh. The drainage location above Bahadurabad is 536,000 sq.Km. This is the widest river device inside the us of a flowing north-south. There are gauges and discharges records for this river at Bahadurabad, in which quantity represents the float getting into Bangladesh plus the ones of the dudhkumar, the dharla and the tista, and minus those of the Old Brahmaputra and bangali. The discharge in the course of the moist season is big, averaging 40,000 cumec, via which degree it ranks with the Amazon, Congo, La Plata, Yangtse, Mississippi and meghna as one of the seven biggest rivers. The maximum recorded flood end up 98,600 cumec in August 1988.
Average annual flow at Bahadurabad is expected to be 501 million acre-feet. August has continually been the month whilst full-size flooding has been maximum likely. Floods from May to July are generally because of the Brahmaputra-Jamuna and Meghna. From August to October because of the combined flows of those river and the Ganges. As a rule, the waft of the Brahmaputra-Jamuna is greater erratic than that of the Ganges. The gradient of the Jamuna averages 1:eleven,850 it really is slightly greater than that of the Ganges. The Jamuna discharges a large quantity of water and on the same time brings in big quantities of sediments. During the moist season it brings down something like 1.2 million lots of sediment every day, and the as soon as a yr silt runoff at Bahadurabad is predicted at 735 million lots.
It has four essential tributaries: the Dudhkumar, the Dharla, the Tista and the Karatoya-Atrai tool. The first 3 rivers are flashy in nature, rising from the steep catchment at the southern side of the Himalayas amongst darjeeling in India, and Bhutan. Of all the distributaries, the Old Brahmaputra is the longest and changed into truely the course of the winning Brahmaputra a few 200 years in the beyond.
Recently a four.8-km lengthy bridge has been constructed over the Jamuna for linking the japanese and western parts of Bangladesh. The japanese fringe of bangabandhu jamuna multipurpose bridge lies in Bhuapur upazila of Tangail district and the western result in Sirajganj Sadar upazila of Sirajganj district. Apart from quick motion of products and passenger visitors with the aid of avenue and rail, it has facilitated transmission of energy and herbal gas, and integration of telecommunication links.
National Desk, Alltimenews.com