what are bandharas water harvesting
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The system starts with a bandhara (check dam or diversion-weir) built across a rivers. From the bandharas branch out kalvas (canals) to carry water into the fields. The length of these canals varies from 2-12 km. Each canal has a uniform discharge capacity of about 450 litres/second.
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U SES OF RAIN WATER HARVESTING Its used to maintain the underground water table.It is also called ground water recharge(In the picture) Since rain water is stored for later use , it can be used at times of drought.
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