This 320km long river originates from Chautarva Chaur near Bisambharpur in the district of West Champaran district of Bihar
It initially flows through the East Champaran district.
After flowing for a distance of about 56km the river takes a southerly turn where two rivers – the Dubhara and the Tour- join it.
Thereafter, the river flows in a south-easterly direction through the Muzaffarpur district for about 32km.
It flows parallel to and east of the Gandak River in an old channel.
The main tributaries of the Burhi Gandak are – Masan, Balor, Pandai, Sikta, Tilawe, Tiur, Dhanauti, Kohra, and Danda
Samastipur is situated on it.
There is no major or medium project over the Burhi Gandak river system.
