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Why can the course shifting tendency of Kosi increase floods in Bihar?

Answer and explanation

Correct answer: Heavy sediment deposition makes the riverbed shallow and can force the river to change its course

The Kosi carries a large sediment load from the Himalayas. When the slope decreases in the plains, sediment is deposited on the riverbed, making it shallow and the channel unstable. The river may then shift its course or spread water near embankments, flooding large parts of Bihar. Option B is incorrect because the Kosi carries abundant sediment. Exam tip: remember the Kosi as the ‘Sorrow of Bihar’ and link it with sediment deposition and course shifting.

Related tags

Kosi RiverBihar FloodsRiver Course ShiftingSediment DepositionIndian DrainageHimalayan RiversDrainage Systems In IndiaDrainage

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