9th Class Social Science Drainage Question Bank Scratch Your Brain - Drainage

  • question_answer
    Name the source of the Brahmaputra. Why does Brahmaputra in its Tibetan part have less silt despite a longer course?

    Answer:

    River Brahmaputra originates beyond the Himalayas in a region surrounding Kailash mountain and Mansarowar in Tibet. flows nearly parallel to the Himalayas. At parallel it takes a U-turn and enters India in Arunachal Pradesh. While flowing in Tibet, it receives less rainfall (Tibet is in the rain shadow of Himalayas and is a region of scanty rainfall). Here the river has less volume of rainfall and has less silt. But in India, it passes through a region which receives heavy rainfall. As such, in India the river carries a large volume of water and considerable amount of silt. It is the volume and force of water which leads to erosion of rocks and formation of silt.


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