UC Riverside, Library, Water Resources Collections and Archives > Clearinghouse for Dam Removal Information (CDRI) > Biological rationale for a proposed reservoir drawdown period for Klamath River Dams

Text / Biological rationale for a proposed reservoir drawdown period for Klamath River Dams

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Item Information.

Title
Biological rationale for a proposed reservoir drawdown period for Klamath River Dams
Creator
Stillwater Sciences
Date Created and/or Issued
8/8/07
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: There are four dams on the Klamath River located between river miles 196 and 225 that are under consideration for removal: Iron Gate, Copco 1 and 2, and J.C. Boyle. Preliminary analyses indicate that there are approximately 15 to 21 million cubic yards of sediment stored within the reservoirs impounded by these four dams (Eilers and Gubala 2003, GEC 2006), most of which is silt and clay. Currently proposed dam removal options would result in up to four million cubic yards of that material being eroded into downstream reaches of the Klamath River, resulting in high suspended sediment loads and possibly localized short-term sediment deposition, both of which will have deleterious effects on aquatic habitats and species. The Conservancy has asked Stillwater Sciences to examine alternative drawdown periods, and select a biologically optimum period for beginning reservoir drawdown.
Type
text
Form/Genre
digital copy
Identifier
ark:/86086/n26h4h15
726
Subject
Fisheries and fish passage
Sediment and channel dynamics
Dams
Dam retirement
Place
Klamath River, CA
Copco No.1 Dam
Copco No.2 Dam
Iron Gate Dam
J.C. Boyle Dam
USA

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