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Adult chinook salmon passage at Little Goose Dam in relation to spill operations
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Abstract
Spill patterns at Little Goose Dam in 2007 were modified in anticipation of a spillway weir installation intended to improve downstream passage of juvenile salmonids. However, in spill pattern was associated with reduced daily counts of adult salmon passing the dam. Consequently, the behaviors and upstream passage times of radio-tagged adult spring–summer Chinook salmon were evaluated in response to three spillway discharge patterns at Little Goose Dam during 2008. Simultaneously, tailrace conditions were characterized by monitoring the downstream paths of GPS-equipped drogues. Two of the spill treatments (i.e., Bulk and Alternate) were variations of patterns thought to mimic those produced if a spillway weir was installed. The third treatment (Uniform) was characterized by spilling similar volumes of water through most spillbays.
Study Area
Publication type | Report |
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Publication Subtype | Other Government Series |
Title | Adult chinook salmon passage at Little Goose Dam in relation to spill operations |
Series number | 2009-6 |
Year Published | 2009 |
Language | English |
Publisher | U. S. Army Corps of Engineers |
Contributing office(s) | Western Fisheries Research Center |
Description | iv., 46 p. |
Country | United States |
State | Washington |
Other Geospatial | Ice Harbor Dam, Little Goose Dam |
Google Analytic Metrics | Metrics page |