The Ganga and the Brahmaputra
Explanation
The Sundarban Delta is the largest delta in the world, located in the Bengal region of the Indian subcontinent. It is a massive depositional landform created by the confluence of major Himalayan river systems emptying into the Bay of Bengal.Detailed Analysis:
- The delta is formed by the super-confluence of the Ganga, the Brahmaputra, and the Meghna rivers.
- The River Ganga flows eastward and enters Bangladesh as the Padma.
- The River Brahmaputra flows south into Bangladesh as the Jamuna.
- These two massive river systems merge (along with the Meghna) and discharge into the Bay of Bengal. The sediment deposited by this process creates the Sundarban Delta.
- The Ganga and the Yamuna is incorrect: The Yamuna is the largest tributary of the Ganga, but their confluence occurs at Prayagraj (Triveni Sangam), which is far upstream in the plains, not at the delta.
- The Brahmaputra and the Teesta is incorrect: The Teesta is a tributary that joins the Brahmaputra (Jamuna) in Bangladesh. While part of the system, the delta is defined by the primary confluence of the Ganga and Brahmaputra mainstreams.
- The Mahanadi and the Godavari is incorrect: The Mahanadi and Godavari are Peninsular rivers that form their own separate deltas on the eastern coast of India (in Odisha and Andhra Pradesh, respectively).
Key Takeaway: The Sundarban Delta is formed by the combined waters and sediment load of the Ganga and Brahmaputra river systems before they empty into the Bay of Bengal.