Patrick Devon   Amber GellerFrankie Pappalardo
A what?Merriam-webster : a barrier preventing the flow of water or of loose solid materials(as soil or snow); especially :...
Not a levee
Structures Concrete arch dam
Structures Gravity Concrete
Structures Earthen Embankment
Who cares? “Since 1950, the number of large dams has climbed from 5,000 to more  than 45,000—an average construction rate...
Primary Purposes
Stakeholders                Recreational users of                 waterways                  Fishing, Kayaking, Canoe   ...
Benefits of Dams Recreation Flood Control Water Storage Irrigation Mine Tailings Electrical Generation Debris Contr...
Negative Impacts             Altered natural and human                environments               Reduced stream flows   ...
Dam Removal?                               Reestablishment of a                                  natural flow regime (flo...
Michigan Purposes:      transport goods (ie: logs)      milling operations      electricity      flood control      navig...
Michigan 2500 dams across the states   114 hydropower    production
Stronach DamManistee County, Michigan Built in 1912, ~ 3 miles upstream of the Manistee River &  Pine River confluence N...
Stronach Dam1996           2003
Big Rapids DamMuskegon River, Mecosta County Built in 1914, 17 foot tall hydropower dam. In 1966 a portion of the dam wa...
Big Rapids Dam Original Dam                        2000                 2001
Dam Controversy Should dams be built? Should dams be left  alone? Should dams be  removed?
What’s at Stake?• Environmental Factors:   • Loss of aquatic populations   • Damage of habitat Social Factors:   • Mortal...
Recommendations Cost/Benefit Analysis every step of the way Dam removal should have priority over dam construction Stre...
ESA 324 - Dams Project
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ESA 324 - Dams Project

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Effects of Dams & Dam Removals

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  • http://www.merriam-webster.com/dictionary/dam?show=1&t=1334529998http://environment.nationalgeographic.com/environment/freshwater/dams-engineering/
  • http://architecture.about.com/od/damsresevoirs/ss/floodcontrol.htmhttp://riverpartners.org/riparian-ecology/veg-levees/levee-failure/
  • http://www.usbr.gov/lc/hooverdam/gallery/damviews.html
  • http://www.grande-dixence.ch/energie/hydraulique/valais/barrage-grande-dixence-2366.htmlgrandedixence damGrand Couee damhttp://en.wikipedia.org/wiki/File:Grand_Coulee_Dam_spillway.jpg
  • http://www.nebraskaweatherphotos.org/Lake-McConaughy-June2006.htmlKingsley Dam, Nebraskahttp://en.wikipedia.org/wiki/Tarbela_Dam
  • http://www.hk-phy.org/energy/alternate/hydro_phy/images/hydro_plant.gif
  • http://users.sa.chariot.net.au/~littoral/pat-ck/pb/grafix/8-1culvertsilt2287.jpg
  • http://www.michigan.gov/dnr/0,4570,7-153-10364_52259_27415-80296--,00.html
  • http://www.michigan.gov/dnr/0,4570,7-153-10364_52259_27415-80308--,00.html
  • http://www.michigan.gov/dnr/0,4570,7-153-10364_52259_27415-80310--,00.html
  • ESA 324 - Dams Project

    1. 1. Patrick Devon Amber GellerFrankie Pappalardo
    2. 2. A what?Merriam-webster : a barrier preventing the flow of water or of loose solid materials(as soil or snow); especially : a barrier built across a watercourse for impounding waterTextbook: basic, fundamental management tool used to control, regulate, and deliverwater for a variety of purposes.Classifications: Gravity concrete Concrete arch Earthen embankment
    3. 3. Not a levee
    4. 4. Structures Concrete arch dam
    5. 5. Structures Gravity Concrete
    6. 6. Structures Earthen Embankment
    7. 7. Who cares? “Since 1950, the number of large dams has climbed from 5,000 to more than 45,000—an average construction rate of two large dams per day for half a century.” Globally, 364 large water-transfer schemes move 14 trillion cubic feet (400 billion cubic meters) of water annually from one river basin to another—the equivalent of transferring 22 Colorado Rivers.Purposes: Flood Control Irrigation Recreation Navigation Hydroelectric generation
    8. 8. Primary Purposes
    9. 9. Stakeholders  Recreational users of waterways  Fishing, Kayaking, Canoe ing, Naturalists  Commercial Fishers  Landowners
    10. 10. Benefits of Dams Recreation Flood Control Water Storage Irrigation Mine Tailings Electrical Generation Debris Control Navigation River Regulation
    11. 11. Negative Impacts  Altered natural and human environments  Reduced stream flows  Degraded water quality  Impacts on migrating fish  Transformation from river system to reservoir  Reduced transport of sediment
    12. 12. Dam Removal?  Reestablishment of a natural flow regime (flow)  Transformation from In some cases it is reservoir to river system beneficial to remove dams  Change in river for the following reasons temperatures and oxygen levels (water quality)  Sediment release and transport  Migration of fish and other organisms (connectivity)
    13. 13. Michigan Purposes: transport goods (ie: logs) milling operations electricity flood control navigation recreation
    14. 14. Michigan 2500 dams across the states  114 hydropower production
    15. 15. Stronach DamManistee County, Michigan Built in 1912, ~ 3 miles upstream of the Manistee River & Pine River confluence No longer serving it’s intended purpose: hydroelectric power Removal began in 1996, gradually restored until 2003. Since 1998 Dr. Hayes has been involved in studying the environmental effects
    16. 16. Stronach Dam1996 2003
    17. 17. Big Rapids DamMuskegon River, Mecosta County Built in 1914, 17 foot tall hydropower dam. In 1966 a portion of the dam was removed negligently. There remained a 5 foot section of the dam which lead to several drowning deaths. Many groups rallied to remove the Big Rapids Dam in 2000/2001.
    18. 18. Big Rapids Dam Original Dam 2000 2001
    19. 19. Dam Controversy Should dams be built? Should dams be left alone? Should dams be removed?
    20. 20. What’s at Stake?• Environmental Factors: • Loss of aquatic populations • Damage of habitat Social Factors: • Mortality • Water source • Recreation • Electricity Resources: • Time • Money • Workers
    21. 21. Recommendations Cost/Benefit Analysis every step of the way Dam removal should have priority over dam construction Stress and be very detailed with loss of NR evaluation Quicken the permit approval process for dam repairs and dam removal Increase inspection frequency of high hazard dams to every year Educate dam owners, consultants, emergency management personnel, and the public about dam safety

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