Name three main problems while constructing large dams.
Answers
Answer:
Social,economic and environmetal problems. If you need elaboration of these,refer Management of Natural Resources chapter-Water For All section
Answer:
Problems while constructing Large dams:
(i) Dams were built in ancient times mainly to harvest the rainwater for irrigation to agricultural fields. After Independence dams were built for integrated development of the river valleys.
(ii) At present construction of large dams has become a controversial issue either due to their failure to meet the objectives or the environmental impact.
(iii) Construction of dams have resulted in problems like excessive sedimentation and salinity, waterlogging, sudden floods, soil erosion, large scale deforestation, extinction of species, health hazards, displacement of local communities and loss of livelihood of tribal communities.
(iv) In some areas, they have triggered earthquakes and natural calamities
Explanation:
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