National Waterway 4 (NW-4) is a 1,095 kilometres (680 mi) long waterway in India. It has been declared as an Indian National Waterway and is currently under development. It connects the Indian states of Telangana, Andhra Pradesh, Tamil Nadu, and the union territory of Puducherry. The NW-4 runs along the Coromandal Coast through Kakinada, Eluru, Commanur, Buckingham Canals and also through part of Krishna and Godavari rivers in South India. It was declared a National Waterway on 24 November 2008 under the Provisions of National Waterways Bill, 2006. It is being developed by the Inland Waterways Authority of India (IWAI), and was scheduled for completion by 2013. The National Waterways Act, 2016 has extended the length of NW-4 from 1,095 km (680 mi) to 2,890 km (1,800 mi) by connecting the Krishna and Godavari Rivers. The Project would be undertaken in 3 phases with first phase beginning in October, 2017 and to be completed by June, 2019