The Purposes of Building a Dam

• Presenters

1. Mohammad Reza Taheri 2. Waheedullah Mohammadkhail

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

A human-made barrier structure

What is a dam

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

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

Nurek Dam ( Tajikistan ) H.E.P

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

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

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

Structure

Hydro-Electric Power

Irrigation is the artificial application of water to the land or soil

Drinking water

Irrigation the farms

Irrigation

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

Drinking Water or potable

Irrigation The Farms

the act or technique of controlling river flow with dams, dikes, artificial channels, etc

Control Of Flooding

Big flood control dams in the world

The Three Gorge Dam(China)

* The Largest Dams in The World

*Kinds Of Dam

Conclusion

By regarding

Mohammad Reza Taheri

Waheedullah Mohammadkhail

The End

Question