Why is the Brahmaputra river prone to flooding and channel shifting 1 It has small but fast flowing ...........

Assam Art and Culture

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Why is the Brahmaputra river prone to flooding and channel shifting?

1. It has small but fast-flowing tributaries.

2. Its catchment area receives high rainfall.

3. It drains in an earthquake-prone zone.

Select the correct answer using the code given below.

2 and 3 only

1 and 2 only

3 only

1, 2 and 3

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Explanation:

The Brahmaputra, one of the largest rivers of the world, has its origin in the Chemayungdung glacier of the Kailash range near the Mansarovar lake. The Brahmaputra, a trans-boundary river, is unstable in its entire reach in Assam except for a few places and well-known for floods, channel shifting and bank erosion. This is due to the fact that most of its tributaries are large, and bring large quantity of sediments owing to heavy rainfall in its catchment area. Hence, statement 1 is not correct and statement 2 is correct.
• Additionally, the entire area falls in an earthquake-prone zone and experiences high rainfall. Landslides and earthquakes send in a lot of debris in the rivers, causing the river bed to rise and leading to floods. Hence, statement 3 is correct.