for english

1. The Purposes of Building a Dam
• Presenters
1. Mohammad Reza Taheri
2. Waheedullah Mohammadkhail

2.  Introduction
_ Brief Information of dam
 The world largest dams
 Advantage and disadvantage of dam
 Hydro-Electric Power
 Irrigation
_Drinking water
_Farming
 Control Of Flooding
 Conclusion
Index

3.  A human-made barrier structure
What is a dam

4.  The Three Gorges ( China ) H.E.P & F.C
 Nurek Dam ( Tajikistan ) H.E.P
 The Grande Dixence Dam (Switzerland) H.E.P
The World Largest Dams

5. The Three Gorges ( China ) H.E.P & F.C

6. Nurek Dam ( Tajikistan ) H.E.P

7. The Grande Dixence Dam (Switzerland) H.E.P

8. Advantage of dam
* Prevent flooding in lower course
* Produce hydroelectric power for economic and industrial
* Better for irrigation
* Store water from rain
* Improve water transport
* Attract tourist

9.  It is very expensive
 Many people have to move
 The living environment of animals and fishes will be
destroyed in lower course
Dis advantage of dam

10.  Structure
Hydro-Electric Power

11.  Irrigation is the artificial application of water to the land or soil
 Drinking water
 Irrigation the farms
Irrigation

12. is water safe enough to be consumed by humans or used with
low risk of immediate .
Drinking Water or potable

13. Irrigation The Farms

14.  the act or technique of controlling river flow with
dams, dikes, artificial channels, etc
Control Of Flooding

15. Big flood control dams in the world
The Three Gorge Dam(China)

16. * The Largest Dams in The World
*Kinds Of Dam
Conclusion

17.  By regarding
Mohammad Reza Taheri
Waheedullah Mohammadkhail
The End

18. Question