2. Welcome A Presentation on DAMS

3. Dams are the main source of water resource, power and food in a region. Hence it has some impacts on environment. Why are Dams chosen?

4. By Structure Arch Dams Gravity Dams Arch –Gravity Dams Barrages Embankment dams By SizeBy Use Saddle Dam Weir Check Dam Dry Dam Diversionary Dam Underground Dam Tailing Dams By Material Steel Dams Timber Dams

5. Arch DamsGravity Dams Arch-Gravity Dams Barrages Embankment Dams

7. By Use Saddle Dams Weir Check Dam Diversionary Dam Dry Dam Underground Dam Tailings Dam

9. Purpose of a Dam Power generationWater supplyStabilize water flow / irrigationFlood preventionLand reclamationFish FarmingNavigationRecreation and aquatic beauty

10. Power Generation

11. Water Supply

12. Stabilize Water flow / Irrigation

13. Flood Prevention

14. Land Reclamation

15. Fish Farming

16. Navigation

17. Recreational and aquatic beauty

19. Ecological aspects Glen Canyon Dam Sand Bar Erosion Fish Ladder Reduction in Breeding Reduction in fish number Turbine & Power plant designs Lower impact on Life Active Research Large Dams Loss of Ecospheres Loss of endangered & undiscovered species Replacement by a new Inland Lake

20. Global Warming Change in Water level Increase in temperature by accumulation of CH 4 Heritage Sites and Monuments Submerged in Water Loss of income to Country Loss of Flora and Fauna Endangered Animals Medicinal Plants Evacuation of People Loss of Own lands No equal replacement Overcrowding

21. * Time for construction * Cost * Unfit for Living * Requires maintenance * Can Fail Catastrophically * Geological effect * Water Supply –reduced to the country Leading to Problems with neighbours. * Large Dam Disturbs natural water table * Mosquito Breeding * Agricultural Lands * Mental fear * Earthquake Prone * Loss of Minerals * Degradation of Water

22. i) Alternate Resources could be used other than hydroelectric power ii) Minimizing the use of hydroelectric power. What measure could we take as a remedy?

23. A presentation by CJ Dass & Surender.