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DAMS

By Colten Parr, Meghan Ryan, and Jamie Schroeder. DAMS. What Is a Dam?. Barrier constructed to contain water flow Sometimes can generate electricity Promotes irrigation Controls flooding in local areas. How Does a Dam Work?. Dams are often triangular for strength

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DAMS

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  1. By Colten Parr, Meghan Ryan, and Jamie Schroeder DAMS

  2. What Is a Dam? • Barrier constructed to contain water flow • Sometimes can generate electricity • Promotes irrigation • Controls flooding in local areas

  3. How Does a Dam Work? • Dams are often triangular for strength • Giant wall withstands pressure • Excess water stored, released when needed • Locks and gates contain water sometimes

  4. Requirements of a Dam • Dams must be water tight • Must have ample strength • Ability to release certain water amounts • Capacity to contain large quantities

  5. Benefits of Dams • Store flood water for human usage • 10% of irrigation water from dams • Navigation occurs on dam water • Dam water is good for recreation

  6. Hydroelectric Dams • Water travels to “powerhouse” near dam • Water then spins turbines repeatedly • Electricity is created cleanly and resourcefully

  7. Gravity Dams • Use gravity to advantage • Heavy materials push down • Water pressure doesn’t do much

  8. Arch Dams • Notches cut in stonewalls • Curved arch placed in notches • Water pushes the arch into notches

  9. Buttress Dams • Water pushes against the dam wall • Supports push back • The buttresses prevent movement

  10. Embankment Dams • Entirely made of clay and earth • Water resistant soils are specially placed • Dam keeps the water in place

  11. Impact on Environment • Environmentalists hate continued use of dams • Dams interfere with natural processes • Different fish species are affected • Minerals or extra salts may present

  12. References • https://www.llnl.gov/str/June07/gifs/dam1.gif • http://www.cromwell.org.nz/aerial_photos/images/Clyde%20Dam_jpg.jpg • http://www.fema.gov/hazard/damfailure/benefits.shtm • http://www.fema.gov/hazard/damfailure/index.shtm • http://science.jrank.org/pages/1942/Dams-Impact-dams.html • http://www.pbs.org/wgbh/buildingbig/dam/index.html • http://idahoptv.org/dialogue4kids/season4/dams/facts.cfm • http://en.wikipedia.org/wiki/Environmental_impacts_of_dams#Impact_above_dam • http://www.bpa.gov/corporate/BPANews/Library/images/Dams/ • http://www.wisegeek.com/how-do-dams-work.htm • http://members.optusnet.com.au/~engineeringgeologist/page5.html • http://www.ussdams.org/howdam.html

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