Write advantage and disadvantages of multipurpose project dam
Answers
The advantages of multipurpose projects are:-
1.) They help in storing water at large amount which can be used for agricultural and other purpose.
2.)Helpful in generating electricity.
3.) Helpful in checking flood.
4.) Provide facility of fishing.
5.) In some conditions, they can be used for navigation.
The disadvantages of multipurpose projects are:-
1.) Sometimes a leakage in the dam from anyside can be very harmful for the adjoining areas.
2.) They cover a large area of cultivable land and forest area.
3.) Sometimes they can cause flood.
4.) They also stop aquatic fauna migration.
5.) Sometime, they can cause water borne diseases.
ADVANTAGES
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.
4.The wasted rain water can be saved through its effective implementation.
5.Flood like situation which mostly affects the small villages can be avoided through this as it has higher capacity to store rain water.
6.As it is always a big project for the welfare and development it also generates employment opportunities.
7.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 panels.
DISADVANTAGES
1.Exaggerated Benefits on Irrigation:
It has been argued that irrigation benefits derived out of multi-purpose projects are exaggerated because the actual area irrigated by these projects is much less due to delay in the construction of field channels and water routes. Moreover delay in completion of these projects has resulted in high escalation of its cost.
2. Higher Cost of Hydropower:
Although hydro power is having the advantage of low operating cost, renewable source and eco-friendly but at the same time it is also subjected to long gestation period, delay in commissioning the project resulting escalation of project cost and higher initial cost. All these have resulted in a comparatively higher unit cost of generation in respect of hydro power.
3. Least Flood Control Benefit:
The multi-purpose projects have also failed to derive maximum benefit in respect of flood control as the embankments, drainage channels and flood protection schemes have failed miserably to achieve results.
4. Adverse Environmental Impact:
Finally, the multi-purpose projects have resulted serious adverse environmental impact in respect of degradation of soil content arising out of waterlogging and soil salinity in its command areas.
Considering these negative sides, Dr. B.B. Vora has rightly observed, “The future of major and medium irrigation is dim and the country has neither the resources nor the time for creating additional gross potential of some 26 million hectares of irrigation through this route. Hence minor irrigation, particularly through the use of ground water, must be the mainstay for all future places.” Management of big dams is also being done at exorbitant financial and ecological costs.
But the management of minor projects has resulted in maximum use of water resources and better control.
Thus, in recent times, basic questions have been raised from various organisations about the standing conventional emphasis and grounds on the multi-purpose river valley projects. It is time to re-evaluate the irrigation policy of the country in a judicious manner and to formulate the policy with new directives and emphasis.
Hope this answer helps…
Happy reading…