answer the 27 questions to be mark as brianlist
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Answer:
27. (i) Damodar River was earlier known as the "River of Sorrows" as it used to flood many areas of Bardhaman, Hooghly, Howrah and Medinipur districts. Even now the floods sometimes affect the lower Damodar Valley, but the havoc it wreaked in earlier years is now a matter of history.
(ii) Tank irrigation is more popular in south India because of the following reasons :-
The undulating relief and hard rocks make it difficult to dig canals and Wells.
There is a little percolation of rain water due to hard rock structure and ground water is not available in large quantities.
The scattered nature of population and agricultural fields also favours tank irrigation
Most of the rivers in this region are seasonal and dry up in summer season. Therefore they cannot supply water to canals throughout the year.
(iii) Tank Irrigation in Peninsular India (with Merits and Demerits)! A tank consists of water storage which has been developed by constructing a small bund of earth or stones built across a stream. The water impounded by the bund is used for irrigation and for other purposes.