Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing it to run off. Rainwater can be collected from rivers or roofs and redirected to a deep pit, aquifer, a reservoir with percolation, or collected from dew or fog with nets or other tools

THE TALK BY ANUPAN MISHRA WAS EXPLAINING THE INTRESTING FACTS ABOUT THE JOHADS IN RAJASTHAN,INDIA. THE OLD CONSERVATION OF WATER AND ITS SPECIALITY WAS EXPLAINED BY HIM THE IMPORTANCE OF WATER  .Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing it to run off.Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing it to run off. Rainwater can be collected from rivers or roofs and redirected to a deep pit (well, shaft, or borehole), aquifer, a reservoir with percolation, or collected from dew or fog with nets or other tools. Its uses include water for gardens, livestock,^[1] irrigation, domestic use with proper treatment, indoor heating for houses, etc. The harvested water can also be used as drinking water, longer-term storage, and for other purposes such as groundwater recharge.
BY;
Kavuri shankar G.K.

Anupam Mishra talks about the amazing feats of engineering built centuries ago by the people of India's Golden Desert to harvest water. These structures are still used today -- and are often superior to modern water megaprojects.

The groundwater is 300 feet deep, 100 meters. And in most parts it is saline, not fit for drinking. So, you can't install hand pumps or dig wells, though there is no electricity in most of the villages. But suppose you use the green technology, solar pumps -- they are of no use in this area. 

They collect 100 thousand liters in one season. And this is pure drinking water. Below the surface there is hard saline water. But now you can have this for year round. It's two houses. We often use a term called bylaws. Because we are used to get written things. But here it is unwritten by law. And people made their house, and the water storage tanks. These raised up platforms just like this stage. In fact they go 15 feet deep, and collect rain water from roof, there is a small pipe, and from their courtyard. It can also harvest something like 25,000 in a good monsoon. 

By this method anupam mishra 
sir says that a single drop of water is not wasted. that is the reason why I liked this video.

Due to the water scarcity nowadays  in tamilnadu can also use this method of well .

"thank you mam for showing a wonderful video like this."