write a paragraph in 299 words abt inundation channels....
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Answer:
Inundation channels are channels meant to carry overflow of water from rivers and other water bodies to fields for irrigation. Such channels have been a traditional means of water harvesting in India.
The purpose of inundation channels is to carry overflow of water from rain (floods) from rivers to the fields for the purpose of irrigation. Bengal is equipped with some amazing system of inundation canals. The flood water flows through these canals to reach the fields.
Bengal's Inundation Channel
Bengal once had an extraordinary system of inundation canals. Sir William Willcocks, a British irrigation expert who had also worked in Egypt and Iraq, claimed that inundation canals were in vogue in the region till about two centuries ago. Floodwater entered the fields through the inundation canals, carrying not only rich silt but also fish, which swam through these canals into the lakes and tanks to feed on the larva of mosquitoes. This helped to check malaria in this region. According to Willcocks, the ancient system of overflow irrigation had lasted for thousands of years. Unfortunately, during the Afghan-Maratha war in the 18th century and the subsequent British conquest of India, this irrigation system was neglected, and was never revived.
According to Willcocks, the distinguishing features of the irrigation system were:
1.) the canals were broad and shallow, carrying the crest waters of the river floods, rich in fine clay and free from coarse sand;
2.) the canals were long and continuous and fairly parallel to each other, and at the right distance from each other for purposes of irrigation;
3.) irrigation was performed by cuts in the banks of the canals, which were closed when the flood was over.
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