Length = 623 km National Waterway 6   *Lakhipur to Bhanga of river Barak. Proposed     Length = 121 km India has an extensive network of inland waterways in the form of  rivers ,  canals ,  backwaters  and  creeks . The total navigable length is 14,500 km, out of which about 5200 km of river and 4000 km of canals can