List any 3 disadvantage of constructing dams on river?
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3
1. Dams interfere with natural flora and fauna of river system.
2. Dams create atmosphere for breeding of mosquitoes.
3. Dams prevent fish migration.
4. Dams destroy ecology and environment during construction which is irreversible.
5. In hilly regions hills become fragile and keep sliding for years after.
6. Debris obtained during construction somehow flows back into the dam from dumping sites.
7. Its failure can be catastrophic.
8. Downstream farmers are disadvantaged.
Marine life suffers.
9. But they have their inherrant advantages in controlling floods, providing cheapest hydro power.
2. Dams create atmosphere for breeding of mosquitoes.
3. Dams prevent fish migration.
4. Dams destroy ecology and environment during construction which is irreversible.
5. In hilly regions hills become fragile and keep sliding for years after.
6. Debris obtained during construction somehow flows back into the dam from dumping sites.
7. Its failure can be catastrophic.
8. Downstream farmers are disadvantaged.
Marine life suffers.
9. But they have their inherrant advantages in controlling floods, providing cheapest hydro power.
Answered by
1
Three Disadvantage of constructing dams on river:
i) Dams are extremely expensive to build and must be built to a very high standard.
ii) The high cost of dam construction means that they must operate for many decades to become profitable.
iii) The flooding of large areas of lands means that the natural environment is destroyed.
[ hope this helps you ]
THANKS FOR THIS QUESTION.
i) Dams are extremely expensive to build and must be built to a very high standard.
ii) The high cost of dam construction means that they must operate for many decades to become profitable.
iii) The flooding of large areas of lands means that the natural environment is destroyed.
[ hope this helps you ]
THANKS FOR THIS QUESTION.
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