Question

Explain any three reasons for which the multi-purpose projects and large dams have come under great scrutiny and opposition in the recent years. ??​

Answer 1

Answer:

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Explanation:

Multipurpose projects and large dams have come under scrutiny because of the following reasons :-

(i) Large dams affect the natural flow of rivers. This results in hampering the flow of sediments. Excessive accumulation of sediments in the reservoirs causes damage to the marine life.

(ii) The dams on the flood plains submerge the vegetation and soil leading to its gradual decomposition.

(iii) It further results in floods due to the deposition of sediments in the reservoirs.

(iv) It causes destruction of the forest areas and the displacement of tribal and local communities.

(v) It also destroys the natural surroundings and biodiversity of an area.

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Answer 2

1 . It affects the natural flow of rivers and results in poor sediment and exccessive sedimentation at the bottom of the reservoir and triggered floods .

2. Dams causes fragmentation of rivers and block the migration routes of aquatic fauna, especially for spawning .

3. Artificial reservoirs submerge some parts of the natural vegetation leading to the extinction of exotic flora and fauna and soil leading to its decomposition over a period of time .

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