Subansiri River – Largest tributary of Brahmaputra in Assam. – Originates in Arunachal Pradesh.
Manas River – Originates in Bhutan. – Flows through Assam; famous for Manas National Park.
Dibang River – Originates in Arunachal Pradesh; joins Brahmaputra.
Lohit River – Flows from Arunachal Pradesh; merges with Brahmaputra.
Dhansiri River – Flows through Nagaland and Assam.
Kopili River – Originates in Meghalaya; joins Brahmaputra in Assam.
Dihing River – Originates in Arunachal Pradesh; merges with Brahmaputra.
Jia Bhoroli River – Smaller tributaries contributing to the Brahmaputra.