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River research and applications v.34 no.6, 2018년, pp.526 - 537   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Fracturing dams, fractured data: Empirical trends and characteristics of existing and removed dams in the United States

Grabowski, Zbigniew J.    (Geography Department, Portland State University, Portland, Oregon, US  ); Chang, Heejun    (Geography Department, Portland State University, Portland, Oregon, US  ); Granek, Elise F.    (Department of Environmental Science and Management, Portland State University, Portland, Oregon, US  );
  • 초록  

    Abstract Dam removals in the United States continue to accelerate in pace and scope, but no national analyses have examined how removed dams compare with existing dam stock. Here, we review and analyse the best available national data on dams from the National Inventory of Dams (NID), dam removals from American Rivers, the U.S. Geological Survey, and the National River Restoration Science Synthesis databases to compare trends and characteristics of removed versus existing dams in the United States. If historical trends continue, by 2050 the United States can expect between 4,000 and 36,000 total removals, including 2,000–10,000 removals of NID dams. Best‐fit regression models estimate total costs between $50.5 million and $ 25.1 billion (mean $10.5 billion, median $ 416.5 million) for all removals and $29.6 million to $ 18.9 billion (mean $7.2 billion, median $ 285 million) for NID removals, a significant cost savings over present stated dam rehabilitation needs. Structural characteristics and ages of documented removals are not representative of existing dams, with privately owned hydroelectric dams subject to public oversight and water supply dams the most disproportionately removed. We conclude that dam removal science would benefit from the creation of an interdisciplinary framework for studying dams as environmental, social, and technological interventions, facilitated by transparent datasets around dams and removals and reflexive research approaches that combine statistical approaches with place‐based analyses.


  • 주제어

    critical infrastructure .   dam removal .   dams .   river restoration .   socio‐enviro‐technical systems .   USA.  

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