!Subansiri Subansiri is a river, which originated from Tibet and enters into India. In India, the total length of the river is 326 miles up to the international boarder. The catchments area of the river is 10,148 sq miles in Arunachal Pradesh and 440 sq miles in Assam. The river discharges 2,09,546 Cusecs of water at Bhimpara Ghat.