@article{oai:serve.repo.nii.ac.jp:00000862,
 author = {村上, 公久},
 issue = {第2号},
 journal = {聖学院大学論叢, The Journal of Seigakuin University},
 month = {Mar},
 note = {先に筆者は「ダム撤去による河川生態系回復の試み―エルワ川ダム撤去に至る経緯―」(1) において史上最大規模のダム撤去による河川生態系回復事業の開始についてそのダム撤去の経緯を含め報告したが，本報告では先ずその続報を記す。続いて河川環境保全の観点からダムの問題点を再検討し，近年アメリカ合衆国で顕著な「脱ダム」の傾向の背景を探り，その事情を考察し，アメリカ合衆国における「脱ダム」の進行状況を「1973年以降の主なダム撤去プロジェクト」と「現在ダム撤去が検討されているダム」の事例の検討によって把握を試みる。最後にわが国の「脱ダム事情」に触れる。, In the former report,(1) the author introduced the “Elwha Ecosystem Restoration Project”, the conduction of the long process of dismantling the Elwha and Glines Canyon dams on the Elwha River in the Olympic National Park, the state of Washington, U.S.A. This report follows up on the progress of the “Elwha Ecosystem Restoration Project” with a review of its effectiveness and an elucidation of dam removal projects in the USA. Over the past 100 years, since about the time when the Elwha Dam was built, the United States has led the world in dam building : blocking and harnessing rivers for a variety of purposes, including hydropower, irrigation, flood control, and water storage. The U. S. Army Corps of Engineers (Army Corps) has catalogued approximately 75,000 dams greater than six feet tall along the waterways of the United States-and at least tens of thousands of smaller dams on American rivers across the country. (The National Research Council estimates that the number of US dams is over 2.5 million.(2)) Former U. S. Secretary of the Interior Bruce Babbitt observed that this means “we have been building, on average, one large dam a day, every single day, since the Declaration of Independence”.(3) Although dams can provide important societal benefits, dams also have negative impacts on rivers, wildlife, and sometimes local communities. The background of the Dam Removal trend in the USA is reviewed in this report. Furthermore, both dam removal projects and dams which are being considered for removal in the United States are discussed.},
 pages = {127--142},
 title = {ダム撤去による河川環境回復の諸事例：アメリカ合衆国におけるダム撤去および撤去検討事例},
 volume = {第27巻},
 year = {2015},
 yomi = {ムラカミ, キミヒサ}
}