These rivers originate from the Himalayas which is located in the North of the state. These rivers flow through the Northern plain regions which are formed by the Ganges and its tributaries, and finally drains in the Bay of Bengal which is located in the South-East direction.
These Himalayan rivers are Ganga, Ghaghara (Saryu), Gandak, Burhi Gandak, Kosi, Kamla Balan, Bagmati and Mahananda rivers.
The major rivers which flow through the level plains of Bihar are tributaries of Ganga river. Ghaghara, Gandak, and Karamnasa rivers forms boundary between Bihar and Uttar Pradesh.
These rivers have water throughout the year as they get water from the glaciers of Himalayas, thus these rivers are known as perennial rivers.
In their flood plains, these rivers deposit fertile alluvium form meanders and frequently change their courses.
The major rivers originating from Himalayas are given below:
Ramganga River
- The Ramganga river rises in the Garhwal district of Uttarakhand.
- It joins the Ganga at Kannauj.
Kali River
- Rises in the high glaciers of trans-Himalaya.
- It forms the boundary between Nepal and Kumaon.
- It is known as the Sarda after it reaches the plains.
- It joins the Ghaghra.
Ghaghara/Saryu
Gandak
Kosi
Burhi Gandak
Bagmati
Mahananda
Kamla
