Answer:
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Explanation:
Methods of Rainwater Harvesting | How to Save Rain Water
Surface runoff harvesting. In urban area rainwater flows away as surface runoff. ...
Rooftop rainwater harvesting. It is a system of catching rainwater where it falls. ...
Rooftop Rainwater Harvesting System. ...
Catchments. ...
Transportation. ...
First Flush. ...
Filter. ...
Sand Gravel Filter.
The following are the advantages of rainwater harvesting: (i) It reduces the runoff loss of rainwater. (ii) It is helpful in controlling floods. (iii) It affords to maintain a supply of water during the dry months of the year. (iv) It can be used to raise the water table.