advantages and disadvantages of multi purpose river valley project ?
Answers
i) Water becomes a renewable resource through the hydrological cycle. Fresh water is mainly obtained from the surface run off and groundwater is continually being renewed and recharged through the hydrological cycle. (ii) Water Scarcity Shortage of water as compared to its demand is known as water scarcity. The main causes of water scarcity are as follows— (a) Growing Population A large population means more water requirement for cooking, washing and bathing. (b) Industrialization The ever increasing number of industries pressure on the existing fresh water resources. Industries are heavy users of water. (c) Commercialization of Agriculture Commercial crops need more water and other inputs. Assured means of irrigation like tube wells and canals are responsible for the falling of ground water levels. (iii) The various advantages and disadvantages of multi-purpose river projects can be compared as given in the table below—
S.N. Advantages Disadvantages
1. Irrigation of crops Natural flow of river is affected causing poor flow of sediments also.
2. Electricity generation Excessive sedimentation of the reservoir.
3. Water supply tor industrial and domestic purposes Stream beds become rockier, affecting marine life.
4. Flood control Dam fragments a river thus making it difficult for aquatic fauna to migrate and spawn.
5. Inland navigation Reservoirs submerge the existing vegetation and soil leading to its decomposition over time.
6. Fish breeding Deforestation and displacement of local people.
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1.Water storage capacity and supply is maintained
2.Strong irrigation system can be made which flourish water to the arid desert regions
3.Electricity is produced through the hydroelectric power plants
The wasted rain water can be saved through its effective implementation
Flood like situation which mostly affects the small villages can be avoided through this as it has higher capacity to store rain water
4.As it is always a big project for the welfare and development it also generates employment opportunities
Canal solar power projects like gujarat can be very useful as it also save millions of tonnes of water from evaporation and also generates clean and green energy through solar panel.
flood control
soil conservation
afforestation
development of irrigation facilities
generation of hydroelectric power at dams
routes and navigation
promotion to aquaculture
development or promotion to recreational activities like boating, swimming etc
tourism
watershed management
increase in wetland area
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Multipurpose river valley projects are projects that serve several purposes like water for agriculture and industries ,generate hydropower,drinking water ,flood control ,navigation and tourism.
main advantages are ;
water for irrigation
water for industry and domestic purpose
inland navigation
generate electricity
fish breeding
tourism
flood control