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Concept
There are many ways to control rainwater in order to reduce run-off and encourage infiltration. The simplest is to create depressions or undulations within the field itself so that the water is held temporarily (from minutes to hours) to give the water time to infiltrate into the soil where it helps to recharge moisture in the lower horizons of the soil which can subsequently be taken up by the plants. In the college Campus NSS volunteers voluntirely involved in digging the water harvesting pits.