(i) Why is well irrigation still a popular means of irrigation ? Give two reasons to support your answer. -Geography

(i) Why is well irrigation still a popular means of irrigation ? Give two reasons to support your answer.  -Geography
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(i) Well irrigation is still a popular means of irrigation because :  1. It can supply water whenever and where ever required.  2. It is also a cheap source of irrigation.  (ii) Significance of rain water harvesting are :  (i) Reduce surface run off therefore no flooding of roads.  (ii) It raises ground water table by adding to ground water reserves.  (iii) It solve the problem of water scarcity.
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