It is a perennial river that originates in the Himalayan range of Nepal and merges with Dhouns river at Akharharghat in the Indian states of Bihar.
[1][2] According to legend, it is one of the ancient rivers in the Mithila region that is still existing.
It is said that the existence of the river can be traced from the legends of Ramayana.
It also defines the international border line between India and Nepal in some parts the Mithila region of the Indian Subcontinent.
[1][3] The river passes through the Mithila region of Nepal and flows through the border area of Haranian, Mahadevpatti, Umgaon, Pipraun, Rajghat, Dighiya, Bela Ghat, and merges at Akharharghat in the Dhouns river.