The Brahmaputra river from Sadiya to Dhubri (891 kms) - declared as National Waterway in 1988.

Fairway Development: - To maintain LAD of 2 m between Dhubri and Dibrugarh (768 km) and 1.5 m between Dibrugarh and Sadiya (123 Km), RC works i.e. bandalling and dredging were carried out. During 2007-08, 21,900 m of bandals were erected and maintained in the entire waterway. In addition, 71,000 m3 of dredging was also done by deploying one CSD and one Hydraulic Surface Dredger (HSD) which are owned by IWAI. Least Available Depth (LAD) of 2.0 m was maintained between Dhubri and Dibrugarh and 1.5 m between Dibrugarh and Sadiya round the year. During 2007-08, an important project for construction and supply of four CSD units was sanctioned by the Government at a cost of Rs 75.64 cr and work was also awarded to separate shipbuilders. The construction work was in progress. Construction of two survey vessels was also completed during the year and the vessels were deployed on waterway.

Terminals:- Construction of low level jetty of fixed terminal (capable of handling container) at Pandu progressed and by the end of 2007-08, it was nearly completed. For construction of high-level jetty of this terminal, CPWD completed the design and tendering process progressed. Based on tendered rates, CPWD increased the cost from Rs 17.70 Cr to Rs 24.58 Cr due to which RCE was prepared and submitted to the DoS for sanction. Floating terminals exist at Dhubri, Jogighopa, Pandu, Tezpur, Silghat, Jamuguri, Neamati and Dibrugarh. These terminals were maintained and used for transportation of cargo. For construction and supply of 3 terminal pontoons for upgrading floating pontoons at Tezpur, Neamati and Dibrugarh tendering was carried out which had to be repeated due to inadequate response. Under the PDO/PDC mechanism project for developing coal handling terminal at Jogighopa under PPP mode was taken up and the team of IL&FS-IDC inspected the site and collected relevant data to formulate the project.

Navigational Aids: - Channel marks for day navigation were erected and maintained in entire waterway. Night navigation aids were also maintained between Dhubri and Pandu (255 km). Besides, fortnightly thalweg surveys were carried out, river notices issued and pilotage provided to cargo vessels. For providing state of art 24 hrs navigation aids in the entire waterway, a Committee under the chairmanship of DGLL, had suggested a combination of lights mounted on buoys/country boats, trestle towers and DGPS stations. For this, tenders for DGPS instruments, trestle towers, buoys and lights were invited. Action to take over land for setting up of DGPS stations at Jogighopa, Tejpur and Dibrugarh were initiated.