NCERT Important Questions Class 10 Social Science Geography Chapter 3
Important NCERT Extra Questions
Chapter 3 Water Resources
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
What is rainwater harvesting? Explain any two different methods of rainwater harvesting in different regions of India.
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(a) Rainwater harvesting is a technique of increasing the recharge of groundwater by capturing and storing rainwater by constructing structures, such as dugwells, percolation pits, checkdams.
(b) Keeping into view the disadvantages and rising resistance against the multipurpose projects, water harvesting system is considered a viable alternative both socio-economically and environmentally.
(c) Rainwater harvesting system was used in ancient India as given below:
(l) In hilly and mountainous regions, people built diversion channels like the ‘guls’ or ‘kuls’ of the western Himalayas for agriculture.
(ii) ‘Rooftop rainwater harvesting’ was practised to store drinking water, particularly in Rajasthan.
(iii) ln the flood plains of Bengal, people developed inundation channels to irrigate their fields.
(iv) In arid and semi-arid regions, agricultural fields were converted into rain fed storage structures that allowed the water to stand and moisten the soil like the ‘Khadins’ in Jaisalmer and’ Johads’ in other parts of Rajasthan.
(u) In Bikaner, Phalodi and Barmer, almost all the houses had underground tanks for storing drinking water.