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What are the advantages and disadvantages of multi-purpose river projects ?

Advantages of multi-purpose river projects

1.Irrigation
2.Electricity generation
3.Water supply for industrial and domestic purposes.
4.Flood control
5.Amusement
6.Inland navigation
7.Fish breeding

Disadvantages of multi-purpose river projects

1.Natural flow of river is affected causing poor flow of sediments also.
2.Excessive sedimentation of the reservoir.
3.Stream beds become rockier.
4.Dam fragments a river thus making it difficult for acquatic fauna to migrate and for spawning.
5.Reservoirs submerge the existing vegetation and soil leading to its decomposition over time.
6.Deforestation and displacement of local people.