NCERT Class 7 EVS Water harvesting

12. Water harvesting 

Background

We know that rainwater recharges the ground water and helps to maintain the flow of rivers. However, most of this water causes floods or just flows away. This is a waste of precious natural resource. The rainwater can be used to recharge the ground water especially in the urban areas. During the rainy season, rain water can be collected in large tanks, cisterns, reservoirs, etc., for future use. This is referred to as rain water harvesting. There are different ways of harvesting rainwater.

Methodology

1. Collect information about various techniques of rainwater harvesting from books, magazines, journals, organisations, and the internet.

2. Visit different localities of your village, town or city and get information about the year they started harvesting water, money being spent in maintenance and amount of water harvested in one calendar year.

Conclusion

Prepare a report on your findings and the benefits of rainwater harvesting.

Follow-up

If water harvesting is not practised in your locality try to launch a campaign to initiate water harvesting.

Please refer to attached file for NCERT Class 7 EVS Water harvesting