The river Brahmaputra having a length of 891 Km between Bangladesh Border and Sadiya was declared as National Waterway no. 2 (NW-2) on 1st September, 1988. IWAI is carrying out various developmental works on the waterway for improving its navigability as laid down in the IWAI act, 1985 (82 of 1985).
As per IWAI, Act 1985, IWAI is responsible to develop the waterway for navigation. IWAI is maintaining a navigable depth of 2.5m in B’Border- Neamati (629 Km), 2.0 m in Neamati – Dibrugarh (139 Km) and 1.5m in Dibrugarh – Sadiya (Oriumghat) stretch. At present the waterway is being used by vessels of Govt. of Assam, Army Border Security Forces, Tourism organization and other private operators. Long cruise tourist vessels are making voyages between Pandu and Majuli island near Neamah regularly. From October to May, over dimensional cargo (ODC) is also transported through the waterway from time to time.