The Adverse Effects of a Dam


 
 
Concept Explanation
 

The Adverse Effects of a Dam

Dam :

A dam is a barrier constructed to control the flow of water, thus forming a reservoir.

Adverse Effect of Dam:

Some of the adverse effects of a dam are mentioned here:

  • A dam affects the diverse ecosystem ,habitat of the region, natural balance of the river , valley and the a normal world.
  • The sediments get trapped in the reservoirs o f the dam and as a result the water that get released contain little sediment. This results in decrease in the fertility of the soil. In order to increase the fertility, chemical fertilizers are used. This increase the crop cost.
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    Sample Questions
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    Question : 1

    Dams are large or small structures which stop the natural flow of water for the purpose of _________ generation and ________ .

    Right Option : B
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    Question : 2

    Which of the following are correct ?

    (a) From the dams canals are dug up to provide water to the land. This construction of canals increases the amounts of salts into the soil .

    (b) A dam fragments the lakes and makes the migration of fish and other aquatic animals difficult.

    (c) The construction of dam comes at the cost of displacement of vegetation and local biodiversity is an adverse effect of dam

    Right Option : C
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    Question : 3

    Which of the following is the adverse effect of a dam ?

    Right Option : C
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