| PREDICTING THE DEPTH OF EROSION IN RESERVOIRS FOLLOWING DAM REMOVAL USING BANK STABILITY ANALYSIS |
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| 作者姓名： | Martin W. DOYLE Emily H. STANLEY Andy R. SELLE John M. STOFLETH Jon M. HARBOR |
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| 作者单位： | Department of Geography University of North Carolina，Center for Limnology University of Wisconsin Madison，Department of Earth and Atmospheric Sciences Purdue University West Lafayette，Department of Earth and Atmospheric Sciences Purdue University West Lafayette，Department of Earth and Atmospheric Sciences Purdue University West Lafayette Chapel Hill NC 27599，WI 53706，IN 47907，IN 47907，IN 47907 |
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| 摘 要： | 1 INTRODUCTION 1. 1 Dam Removal The aging of the more than 75,000 dams in the U.S., coupled with the increasing awareness of their environmental costs, has made dam decommissioning and removal a topic of current interest to the scientific community, management agencies, and the general public. It is estimated that 85% of the dams in the U.S. will be near the end of their operational lives by the year 2020 (FEMA, 1999), necessitating thorough consideration of dam removal or repair for…
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PREDICTING THE DEPTH OF EROSION IN RESERVOIRS FOLLOWING DAM REMOVAL USING BANK STABILITY ANALYSIS |
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| Martin W. DOYLE,Emily H. STANLEY,Andy R. SELLE,John M. STOFLETH,Jon M. HARBOR.PREDICTING THE DEPTH OF EROSION IN RESERVOIRS FOLLOWING DAM REMOVAL USING BANK STABILITY ANALYSIS[J].International Journal of Sediment Research,2003,18(2). |
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| Authors: | Martin WDOYLE Emily HSTANLEY Andy RSELLE John MSTOFLETH Jon MHARBOR |
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| Abstract: | Dam removal has emerged in the U.S. as a critical concern for river management. Of particular interest is predicting the quantity of sediment that will be eroded from a reservoir following dam removal, which necessitates predicting the geometry a channel will approach as it forms in the reservoir. The geometry and sediment characteristics of the Koshkonong River were measured as it adjusted to the removal of the Rockdale Dam. Bank stability modeling was used as a tool for predicting the maximum depth of the evolving channel and general agreement was found between depths predicted with the model and those observed up to one year following dam removal. Model sensitivity analysis showed strong control of bank heights by groundwater levels in the reservoir sediment, as well as some control by vegetation established on the sediment surface. Long-term monitoring is needed to assess the accuracy of the model, but preliminary agreement is encouraging for applying this model and similar models to future dam removals. |
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| Keywords: | Dam removal Bank stability model Channel evolution Reservoir sediment |
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