what is rain water harvesting? why is it a better method of storing water than big dams?
Answers
Answer:
Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing them to run off.
.Thus, water harvesting system is taken as a more viable alternative to dams because,
(i) like dams, it does not displace local people.
(ii) it does not cause environmental problems like loss of flora and fauna.
(iii) during rainy season, excess water is released from dams, which induces floods or create the flood situation, which is not so in the case of water harvesting.
(iv) the local people are not benefitting from big dams, it is the landlords, large farmers, industrialists and the urban centres who are benefitted. In water harvesting system, common people use the stored water for personal use and in agricultural field.
Explanation:
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Answer:Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing them 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.
Explanation:
From ancient period, people were well aware of the water harvesting system. They had in depth knowledge of rainfall regimes, soil types and wide ranging techniques to harvest rainwater, groundwater, river water and flood water.
Thus, water harvesting system is taken as a more viable alternative to dams because,
(i) like dams, it does not displace local people.
(ii) it does not cause environmental problems like loss of flora and fauna.
(iii) during rainy season, excess water is released from dams, which induces floods or create the flood situation, which is not so in the case of water harvesting.
(iv) the local people are not benefitting from big dams, it is the landlords, large farmers, industrialists and the urban centres who are benefitted. In water harvesting system, common people use the stored water for personal use and in agricultural field.
Hope it will help you!