Q. Consider the following statements regarding tributary characteristics in Assam:

1. North bank tributaries are generally perennial and snow-fed.
2. South bank tributaries are mainly rain-fed and originate in the Meghalaya Plateau.
3. Barak River tributaries drain into the Bay of Bengal through the Meghna system.

Which of the above statements are correct?
Answer: 1, 2, and 3
Notes: North bank tributaries of the Brahmaputra, such as Subansiri and Manas, originate in the Himalayas and are largely perennial, snow-fed. South bank tributaries come from the Meghalaya Plateau and are mainly rain-fed. Barak River tributaries flow into the Bay of Bengal via the Surma–Kushiyara–Meghna system. Therefore, all statements are correct.