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Title: Movement of Sediment Accumulations
Alternative Title: Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges, EWRI and ASCE 2005 Watershed Management Conference, Williamsburg, Virginia, July 19-22, 2005
Creator: Blair Greimann
Bureau of Reclamation, Technical Services Center, Sedimentation and River Hydraulics Group, Denver, CO.
Date Created and/or Issued: 2005
Contributing Institution: UC Riverside, Library, Water Resources Collections and Archives
Collection: Clearinghouse for Dam Removal Information (CDRI)
Rights Information: Copyrighted
Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user.
Description: Scope/Content: Abstract: When large dams are removed, one of the biggest concerns is the associated impacts from the erosion and transport of reservoir sediment in the downstream river channel. Predicting the sediment impacts is critical to ensure that the dam is removed in a safe, controlled manner and the downstream mitigation or protective measures can be appropriately designed. However, because of the limited data and inadequate models, the quantification of sediment impacts is subject to great uncertainty. This paper presents an overview of current methods used to predict the volume and rate of erosion of sediment in the reservoir region and the resulting downstream impacts. A simple model of downstream aggradation is proposed that may simplify analyses of deposition of coarse material downstream. The potential application and limitations of each method are described.
Type: text
Form/Genre: digital copy
Identifier: ark:/86086/n2t43sr9
120
Subject: Sediment and channel dynamics
Dams
Dam retirement
Place: US

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