ES 2WW3_lecture5_ppt

ES 2WW3_lecture5_ppt - Earth Sc 2WW3: Lecture 5 Dams and...

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Unformatted text preview: Earth Sc 2WW3: Lecture 5 Dams and Interbasin Transfers Historical Perspectives on Water Use Why Dams and Transfers? Freshwater Stress Solution? Increasing water supplies Ways to increase supplies : Withdraw groundwater Desalinate salt water - make fresh water Improve efficiency of water use Dams and Reservoirs Reservoirs: essentially artificial lakes Dams are built to impound water and to form a reservoir Purpose of Dams in the U.S. Principal Storage Zones in Reservoir Types of Dams Pros & Cons of Dams Decline in Dam building Watershed Transfers Some watersheds have excess water, some have shortages Solutions? Problems? Irrigation : increase crop yield; expand arable land Industrial and municipal use Hydroelectric power generation Navigation : canals can be used to transfer water, but also to move between different centers Financial gain Purposes of Transfers Technical Economic Political : what is the agreement between donor...
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This note was uploaded on 02/22/2011 for the course CS 1B03 taught by Professor Dr.dotler during the Winter '08 term at McMaster University.

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ES 2WW3_lecture5_ppt - Earth Sc 2WW3: Lecture 5 Dams and...

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