Sep 01, 2015 National Waterways projects 4382 km of inland waterways have been declared as National Waterways (NWs), as per details given below: (i) Ganga-Bhagirathi-Hooghly river system (Allahabad-Haldia-1620 km) in the states of Uttar Pradesh, Bihar, Jharkhand and West Bengal as NW-1, declared in 1986.