Description

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Context:

The bodies of a woman and two children were found floating in the Barak River at Jirimukh in Manipur's conflict-ridden Jiribam.

Details:

Rank	The second largest river in Northeast India after the Brahmaputra.
Countries Covered	India (Manipur, Nagaland, Mizoram, Assam), Bangladesh.
Origin	Manipur hills, south of Mao in Senapati district, Manipur.
Course	It flows along the Nagaland-Manipur border through hilly terrains, enters Assam, then flows into Bangladesh, where it is called Surma and Kushiyara, later known as Meghna, and outfalls into the Bay of Bengal.
Basin Coverage	Forest: 72.58% of the total area; Water bodies: 1.92%
Boundaries of Basin	North: Barail range (separates from Brahmaputra sub-basin), East: Naga and Lushai hills, South & West: Bangladesh.
Tributaries	Jiri, Dhaleswari, Singla, Longai, Sonai, Katakhal
Basin Name	Part of the composite Ganga–Brahmaputra–Meghna basin.
Significance	Covers nearly one-third of the land area of the Indian Union.

Drainage System:

The flow of water through well-defined channels is known as 'drainage' and the network of such channels is called a 'drainage system'. The drainage pattern of an area is the outcome of the geological time period, nature and structure of rocks, topography, slope, amount of water flowing, and the periodicity of the flow.

Important Drainage Patterns:

(i) The drainage pattern resembling the branches of a tree is known as “dendritic” the examples of which are the rivers of the northern plain.

(ii) When the rivers originate from a hill and flow in all directions, the drainage pattern is known as ‘radial’. The rivers originating from the Amarkantak range present a good example of it.

(iii) When the primary tributaries of rivers flow parallel to each other and secondary tributaries join them at right angles, the pattern is known as a ‘trellis’.

(iv) When the rivers discharge their waters from all directions in a lake or depression, the pattern is known as ‘centripetal’.

Source:

TOI