Rivers, canals, streams, lakes, bills and other waterbodies form an important source of cheap transportation. This is specially so in West Bengal, where there are numerous waterbodies. There are about 3000 km. of navigable waterways in the state, of which 300 kms. are canals (Bose 1964). Besides during the rainy season many more stretches of rivers become navigable by watercraft. At many places in West Bengal the river transport system is considered to be more important than the bullock carts, like in the Sundarbans, the former has totally replaced the latter due to topographical demand of the land.
The Sankosh, The Raidak, The Kalindi, The Torsa, The Jaldhaka, The Tista, The Mahananda, The Tangan, The Purnabhaba, The Atrai, The Gomor, The Ganga, The Bhagirathi/Hugli, The Mayurakshi, The Bramhani, The Dwaraka, The Bakreswar, The Kopai, The Ajay, The Damodar, The Sraswati, The Rupnarayan, The Kangasabati/Kasai, The Rasulpur, The Subarnorekha, The Jalogi, The Mathabhanga, The Bhairab, The Ichhamati, The Matla, The Muriganga/Buriganga, The Raimongal and so on, are the major rivers of West Bengal.