Problem related with large dams construction
Answers
1. regulating and damming affects the natural flow of water.
2. damming of a river affects the migration and spawning of aquatic life.
3. the reservoirs lead to decomposition of soil and land degredation.
4. dams have triggered floods due to sedimentation in the reservoir and release of excess water during heavy rains.
5. large scale displacement of local communities, local people who give up their land for the purpose of building the dam hardly recieve any benefit.
6. sometimes these dams also are a cause of water borne diseases.
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Answer:
(a) Only privileged section of people get maximum water due to mismanagement of water of canals.
(b) Construction of dams involves deforestation of large trees resulting in imbalance in ecosystem. It also threatens the wild life of the areas.
(c) People close to source canal grow water intensive crop like rice and sugarcane whereas people further down stream do not get any water.