Question

Which of the following statements are correct?

1. The Brahmaputra shifts its channel frequently.

2. Unlike the Ganga, the Brahmaputra is not affected by silt deposition.

3. The river system causes annual floods in Assam.

• A. 1 & 2
• B. 2 & 3
• C. 1 & 3
• D. All are correct

Answer 1

Answer:

C. 1 & 3

• Correct Answer: Option C) 1 & 3

• The Brahmaputra River is one of India's major river systems with several distinctive characteristics:

• The Brahmaputra shifts its channel frequently - This statement is correct. The Brahmaputra is known for its braided channel pattern and lateral channel migration. Due to the huge sediment load it carries and the flat terrain of Assam, the river frequently changes its course, creating numerous islands (chars) and abandoned channels.

• Unlike the Ganga, the Brahmaputra is not affected by silt deposition - This statement is incorrect. The Brahmaputra carries an enormous amount of silt and sediment, particularly during the monsoon season. In fact, it is one of the highest sediment-carrying rivers in the world. This silt deposition significantly affects the river's morphology, leading to the formation of braided channels and contributing to the frequent shifting of its course.

• The river system causes annual floods in Assam - This statement is correct. The Brahmaputra is notorious for causing devastating annual floods in Assam during the monsoon season. These floods are a result of several factors including heavy rainfall in its catchment area, the river's shallow gradient in the Assam plains, and the massive discharge of water and sediment the river carries.