What is rain water harvest?write it's …

There is a constant shortage of water that is either good for drinking or home and industrial use. Areas on the planet that have long faced water shortage were able to combat this problem by harvesting what little rain water they received. This slowly started spreading to areas where there was plenty of rainfall. As a result, the modern day rainwater harvesting system  was bought into place.Rainwater is collected when it falls on the earth, stored and utilized at a later point.Rainwater harvesting is a process or technique of collecting, filtering, storing and using rainwater for irrigation and for various other purposes.Advantages of rainwater harvesting are:

1)In areas where there is excess rainfall, the surplus rainwater can be used recharge ground water through artificial recharge techniques.

2)The overall cost of their installation and operation is much lesser than that of water purifying or pumping systems.

3)On an industrial scale, harvesting rainwater can provide the needed amounts of water for many operations to take place smoothly without having to deplete the nearby water sources.

4)Rainwater is free from many chemicals found in ground water, making it suitable for irrigation and watering gardens.

5)It also helps in reducing soil erosion and contamination of surface water with pesticides and fertilizers from rainwater run-off which results in cleaner lakes and ponds.