The longest National Waterway of India is the Ganga river between Allahabad and Haldia.
Importance of waterways:
(i) It is most suitable for carrying heavy and bulky goods.
(ii) It is a fuel efficient and environment friendly.
(iii) More than 95% of the country's trade volume is moved b1 the sea.
(iv) It is the cheapest means of transport.
(v) They are the natural routes which do not involve cost of construction.
