Brahamaputra Basin
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<strong>Brahamaputra</strong> <strong>Basin</strong><br />
The lengths of the major rivers draining in Brahmaputra <strong>Basin</strong> draining within the Indian teritory are<br />
listed in the Table 4.<br />
Table 4. Length of major rivers<br />
North bank tributaries<br />
South bank tributaries<br />
Sl. NO. River Name Length (km) Sl.NO. River Name<br />
Length<br />
(km)<br />
1 Subansiri 347.84 1 Dibru 108.20<br />
2 Kameng (Jiabharali) 205.72 2 Buri-Dihing 236.12<br />
3 Ranganadi 136.19 3 Disang 208.5<br />
4 Puthimari 104.73 4 Dikhow 239.67<br />
5 Pagladiya 119.98 5 Jhanji 155.29<br />
6 Buri Dihing 214.14 6 Dhansiri 395.98<br />
7 Teesta 270.59 7 Kopili 256.95<br />
8 Jaldhaka 174.06 8 Kulsi 137.66<br />
9 Torsa 106.85 9 Krishnai 98.55<br />
10 Champamati 104.84 10 Jinjiram 89.86<br />
11 Noa Dehing 168.03<br />
*GIS calculated length<br />
c) Lower Reach: It covers the lower portion of the river for a length of 337 km from the Indo-<br />
Bangladesh border to its outfall into the Bay of Bengal.The whole portion of the lower reach of the<br />
river falls within Bangladesh.Near the Indo-Bangladesh border, the Brahmaputra River takes a turn<br />
towards south and flows mostly in the southern direction with a little eastward trend. The river<br />
flows 225 km from the Indo-Bangladesh border upto Goalundo. In the reach from the confluence of<br />
the Teesta River near Bahadurabad to Goalundo, the Brahmaputra River is known as Jamuna. At<br />
Goalundo, the Brahmaputra (Jamuna) joins another major river, Ganges-Padma, coming from west<br />
and the combined river flows as Ganga-Padma for 80 km. Near Rajabari, another major tributary<br />
Meghna coming from north-east joins it and the combined river flows for 32 km as Meghna River. A<br />
little down stream, the Meghna River trifurcates in three channels forming a delta. The three<br />
channels are: Sandwip (the east channel), Shahbaz (the central), and Tutulia (the western channel).<br />
These channels ultimately outfall into the Bay of Bengal forming broad estuaries.Practically, there is<br />
no notable tributary on its east (left) bank, except the Meghna River.Important tributaries on its<br />
right bank are Ridak, Jaldhaka (Dharla), Teesta and Torsa.<br />
The important tributaries of Brahmaputra, lying in Indian Territory, are described below:<br />
(i) Subansiri: Subansiri is among the largest tributaries of the Brahmaputra. It is a snowfed<br />
perennial trans-Himalayan river rises in the mountains of Tibet. In India, the river drain 347.84<br />
km and the rest part falls in Tibet. It drains an area of 37,700 Sq.km. Subansiri has a maximum<br />
discharge of 18,799 cumec and minimum of 131 cumec. It contributes 7.92% of the total yield<br />
of the Brahmaputra.<br />
(ii) Kameng (Jiabharali): The Kameng rises from the hills of the Himalayas presumably in the<br />
territory of Tibet beyond the Aka & Duffa Hills. The river Kameng flows for 55 km in south<br />
westerly direction and then reaches Bhalukpong where it ends its hilly journey. The river is<br />
nearly 205.72 km long.<br />
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