Dams:Pros and Cons

5,809 views
5,378 views

Published on

A useful video on the advantages and disadvantages of dams. This is dedicated to my late friend Gaurav Charan...

Published in: Education, Technology
0 Comments
3 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
5,809
On SlideShare
0
From Embeds
0
Number of Embeds
13
Actions
Shares
0
Downloads
119
Comments
0
Likes
3
Embeds 0
No embeds

No notes for slide

Dams:Pros and Cons

  1. 1. The pros are demonstrated in the following possible benefits and uses of the multi-purpose river valley projects:  provides work  eliminates flooding  provides power & water for human consumption  helps to conserve water  provides water for agriculture & industrial uses  provides for a fishery  changes the ecology of the region  opens new areas to agriculture
  2. 2. CONS MAY INCLUDE:  they lead to the displacement of human, plants, animals, chiefly from small tribal communities.  disrupt downstream fisheries.  increase the risk of earthquakes.  submerge forest land.  increase the spread of insect-borne diseases.  threaten the fragile regional ecosystem  These projects initially devastate human lives and biodiversity by inundating thousands of acres of forests and agricultural land.  They degrade the fertile agricultural soils due to continuous irrigation (rather the seasonal irrigation which is dependent on the monsoon), and salinization, making the soil toxic to many plant species.
  3. 3. Bhakra Dam is a concrete gravity dam across the Sutlej River, and is near the border between Punjab and Himachal Pradesh in northern India .The dam, located at a gorge near the (now submerged) upstream Bhakra village in Bilaspur district of Himachal Pradesh, is India's second tallest at 225.55 m (740 ft) high next to the 261m Tehri Dam The length of the dam (measured from the road above it) is 518.25 m; it is 9.1 m broad. Its reservoir, known as the "Gobind Sagar", stores up to 9.34 billion cubic meters of water, enough to drain the whole of Chandigarh, parts of Haryana, Punjab and Delhi. The 90 km long reservoir created by the Bhakra Dam is spread over an area of 168.35 km2 . In terms of storage of water, it withholds the second largest reservoir in India, the first being Indira Sagar Dam in Madhya Pradesh with capacity of 12.22 billion cu m.
  4. 4. The dam was constructed with an aim to provide irrigation to Punjab and Himachal Pradesh. Another reason behind the construction of the dam was to prevent damage due to monsoon floods. The dam provides irrigation to 10 million acres (40,000 km²) of fields in Punjab ,Himachal Pradesh, Haryana, and Rajasthan. It also has five flood gates to control floods. Being the Second highest dam in India, it attracts a large number of tourists who visit its reservoir and attractive location. The distance between the Ganguwal and Bhakra Dam is about 30–35 km.
  5. 5. DAMODAR RIVER VALLEYDAMODAR RIVER VALLEY PROJECTPROJECT  First river valley project of free india.First river valley project of free india.  Damodar is a small river tributary to the Hugli River mostly called, 'sorrowDamodar is a small river tributary to the Hugli River mostly called, 'sorrow of Bengal’.of Bengal’.  The project involves compact, unified multipurpose river basin develop­mentThe project involves compact, unified multipurpose river basin develop­ment program .program .  The Damodar Valley Project has total installed capacity of generatingThe Damodar Valley Project has total installed capacity of generating 1181 mw of electricity .1181 mw of electricity .  providing irrigation facilities to 5.15 lakh hectares of agricultural area.providing irrigation facilities to 5.15 lakh hectares of agricultural area.  development of24,235 square km of adjoining area covering industrial belt ofdevelopment of24,235 square km of adjoining area covering industrial belt of Bihar and West Bengal and rural areas of Patna, Gaya, Shahabad, SinghbhumBihar and West Bengal and rural areas of Patna, Gaya, Shahabad, Singhbhum (Bihar) and Medinipur (West Bengal), districts.(Bihar) and Medinipur (West Bengal), districts.
  6. 6. PROS OF DAMODAR RIVER VALLEYPROS OF DAMODAR RIVER VALLEY PROJECTPROJECT  erosion-resisting structures like Adivasi, Deochanda, Bachhi anderosion-resisting structures like Adivasi, Deochanda, Bachhi and Gauria Karma dams built in the catch­ment area to hold back rainGauria Karma dams built in the catch­ment area to hold back rain water and prevent gully erosion.water and prevent gully erosion.  scientific regeneration of denuded forests.scientific regeneration of denuded forests.  large-scale plantation of timber, mulberry and other fastlarge-scale plantation of timber, mulberry and other fast growing trees.growing trees.  promotion of culture.promotion of culture.  development of aqua-culture in the reservoirs of the D.V.C.development of aqua-culture in the reservoirs of the D.V.C.  development of paper metallurgical, engineering, aluminium,development of paper metallurgical, engineering, aluminium, cement and other industriescement and other industries  promotion of tourism, horticulture and dairying.promotion of tourism, horticulture and dairying.
  7. 7. CONS OF DAMODAR RIVER VALLEYCONS OF DAMODAR RIVER VALLEY PROJECTPROJECT  adverse impact of release of water from over flowing dams in theadverse impact of release of water from over flowing dams in the hinterland.hinterland.  the displacement of person evicted from the construction areas of thethe displacement of person evicted from the construction areas of the dam.dam.  inadequate provision for rehabilitation of displaced societies and loss ofinadequate provision for rehabilitation of displaced societies and loss of their livelihood.their livelihood.  the cost of construction and maintenance of dams, especially if these arethe cost of construction and maintenance of dams, especially if these are managed inefficiently by the private sector.managed inefficiently by the private sector.  Many estuary based fisheries and river based fisheriesMany estuary based fisheries and river based fisheries have been either damaged, or destroyed.have been either damaged, or destroyed.
  8. 8. The Narmada Valley Development Project is the single largest river development scheme in India. It is one of the largest hydroelectric projects in the world and will displace approximately 1.5 million people from their land in three states (Gujarat, Maharashtra, and Madhya Pradesh) the project involves the construction of several dams, the largest of them being ‘Sardar Sarover’ which is being built on the east side of Gujarat, it will submerge 40,000 hectares of land and is will also become the second largest dam.
  9. 9.  The project will supply domestic and industrialThe project will supply domestic and industrial water to around 30 million people and will alsowater to around 30 million people and will also irrigate crops that could potentially feed up to 20irrigate crops that could potentially feed up to 20 million peoplemillion people  The project will provide electricity in areas withThe project will provide electricity in areas with high unmet need, for instance, farm pumps usuallyhigh unmet need, for instance, farm pumps usually get only a handful of hours power every day,get only a handful of hours power every day, continuous electricity would definitely result incontinuous electricity would definitely result in more productive and quantitative produce.more productive and quantitative produce.  Most importantly, it would produce immenseMost importantly, it would produce immense economic opportunities – it has a potential toeconomic opportunities – it has a potential to employ 1 million people. It would also result in anemploy 1 million people. It would also result in an economic multiplier effect, that is, investment andeconomic multiplier effect, that is, investment and employment stirred by the dam developmentemployment stirred by the dam development ..
  10. 10. • The project can potentially displace around 300,000The project can potentially displace around 300,000 people, disrupt fisheries, increase the risk of earthquakes,people, disrupt fisheries, increase the risk of earthquakes, inundate forest lands and cause a rise in insect-borneinundate forest lands and cause a rise in insect-borne diseases.diseases.

×