Ganges

**Course of the Ganges River:**
– The Ganges River originates at the confluence of the Bhagirathi and Alaknanda rivers in Devprayag.
– It emerges from the Himalayas at Rishikesh and flows onto the Gangetic Plain at Haridwar.
– Passing through cities like Bijnor, Kannauj, Farukhabad, and Kanpur, the Ganges meets the Yamuna at Prayagraj.
– The Yamuna contributes 58.5% of the combined flow at the confluence.

**Tributaries of the Ganges:**
– Tributaries include the Ramganga, Tamsa, Gomti, Ghaghara (Karnali), and Son rivers.
– The Ghaghara River is the largest tributary by discharge, contributing about 2,991m³/s.
– Tributaries play a vital role in the overall hydrology of the Ganges and help maintain its ecosystem and water flow.

**Cities and Landmarks Along the Ganges:**
– The Ganges passes through towns like Chunar, Mirzapur, Varanasi, and Patna.
– Notable landmarks include the Gandhi Setu Bridge in Patna.
– At Farakka, the Ganges starts to branch away its first distributary, the Bhāgirathi-Hooghly.
– The river forms the major estuary of the Ganges Delta before emptying into the Bay of Bengal.

**Importance and Challenges of the Ganges River:**
– The Ganges is vital for millions of people living in its basin for daily needs.
– Historically, important cities like Pataliputra and Delhi have been located on its banks.
– Hindus consider the Ganges the most sacred river and worship it as the goddess Ganga.
– The river faces severe pollution issues, endangering both humans and wildlife.

**Geology, Hydrology, and Ecosystem Impact:**
– The Indian subcontinent lies on the Indian tectonic plate within the Indo-Australian Plate.
– The Ganges basin covers parts of India, Nepal, China, and Bangladesh.
– The Ganges Delta is the world’s largest delta, covering approximately 64,000 sq km.
– The discharge of the Ganges varies based on different sources and seasonal variations due to the Southwest Monsoon.