- Ganga River originates as Bhagirathi from the Gangotri glacier, Uttarakhand, India.
- Alaknanda joins it at Devaprayag.
- Pindar River joins it at Karan Prayag and Mandakini or Kali Ganga at Rudra Prayag.
- The combined waters of the Bhagirathi and the Alaknanda flow in the name of the Ganga, below Devprayag.
- It debouches on the plain from hills in Haridwar.
- It is joined by Yamuna in Allahabad.
- Beyond Farakka, it is known as Padma in Bangladesh.
- It bifurcates itself into Bhagirathi-Hooghly in West Bengal and Padma-Meghna in Bangladesh.
- The delta formed by the Ganga-Brahmaputra is the largest delta in the world covering an area of 58,752 sq km.
- Sundarbans is a part of the world’s largest delta.
- The total length, 2525 km, is distributed among states:
- Uttar Pradesh – 1140,
- West Bengal – 520 km,
- Bihar – 445 km,
- Uttrakhand – 310 km.