1. River Bhagirathi and Alaknanda emerging from the Gangotri area in Himalayas, merge with each other near Devprayag (Uttarakhand). Hence, Ganga river leave the mountains terrain and enters plains near Haridwar.
2. Many Himalayan rivers like Ghaghra, Gandak and Kosi meet Ganga.
3. Yamuna emerges from Yamnotri in Himalayas flowing to the right side of Ganga, it merges with Ganga near Allahabad.
4. The origin of Ghaghra, Gandak and Kosi rivers lies in Nepal. Hence, the northern plain experiences flood disasters every year.
5. India has been able to attain prosperity in agriculture through fertile plains formed by these rivers.
6. Chambal and Betwa originate in peninsular plateau and meet Yamuna. Son river meets Ganga.
7. The combined flow of rivers from north and south is divided ahead into two branches.
8. One branch enters Bangladesh and is known there as Padma while another branch is known as Bhagirathi-Hugli in West Bengal. Finally these two branches meet the Bay of Bengal.
9. The flow of Ganga which is known as Padma in Bangladesh merges there with Brahmaputra river and their combined flow is known as ‘Meghna’.
10. The Ganga-Brahmaputra delta is the most fertile delta. It is known as ‘Sunderban’.
