Due to heavy rainfall in Nepal’s catchment area, the water levels of the Gandak River in Bihar have been rising continuously.
About Gandak River:
It is one of the major rivers of North India and a significant left-bank tributary of the Ganga River.
It is mentioned in the ancient Sanskrit epic Mahabharata.
Course:
It originates to the north of Dhaulagiri Mountain in Tibet near the Nepal border.
It is formed by the union of the Kali and Trisuli Rivers, which rise in the Great Himalayas of Nepal.
From their meeting point till the Indian border, the river is known as the ‘Kali Gandaki’ and ‘Narayani’ in Nepal.
It enters India near Valmikinagar in Bihar and briefly touches Uttar Pradesh, forming a small stretch of boundary.
The entry point of the river is at the Indo–Nepal border and is known as Triveni.
After this, the river flows mainly through Bihar, covering districts like West Champaran, East Champaran, Gopalganj, and Saran.
The Gandak finally joins the Ganga River opposite Patna, near Hajipur in Vaishali district, Bihar.
The basin is bounded by the Himalayas to the north and the Ganga River to the south.
On the sides, it lies between the Kosi basin in the east and the Karnali (Ghaghara) basin in the west.
The basin includes: Dhaulagiri, Manaslu, and Annapurna Massif.
Due to the steep slope and loose soil in the upper catchment, Gandak carries a lot of silt and other deposits to the Indian side, resulting in a continuous shifting course of the river.
While flowing through the Nepal Himalayas, it forms the Kali Gandaki Gorge, one of the deepest river gorges in the world.
Two important protected areas, Chitwan National Park in Nepal and the adjacent Valmiki Tiger reserve in India, have been established in the basin.
Major Tributaries: Daraudi, Seti, Madi, Marsyandi, and Budhi Gandaki.
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