Publication:
Residence times and diel passage distributions of radio-tagged juvenile spring Chinook salmon and steelhead in a gatewell fish collection channel of a Columbia River dam

dc.contributor.authorBeeman, J W
dc.contributor.authorMaule, A G
dc.date2023-09-23T05:22:00.000
dc.date.accessioned2024-04-26T17:23:45Z
dc.date.available2024-04-26T17:23:45Z
dc.date.issued2001-01-01
dc.description.abstractThe amount of time radio-tagged juvenile spring Chinook salmon (Oncorhynchustshawytscha) and juvenile steelhead (O. mykiss) spent within a gatewell and the juvenilecollection channel at McNary Dam, Columbia River, USA, was measured to determine the dielpassage behaviour and residence times within these portions of the juvenile bypass system. Themedian gatewell residence times were 8.9 h for juvenile Chinook salmon and 3.2 h for steelhead.Juvenile spring Chinook salmon spent 83% of their time in the 18-m-deep gatewell at depths of 9m or less, and juvenile steelhead spent 96% of their time in the upper 11 m. Fish released duringmidday and those released in the evening generally exited the gatewell in the evening, indicatingthat fish entering the gatewell during daylight will have prolonged residence times. Median collection-channel residence times of juvenile Chinook salmon were much shorter (2.3 min) thanthose of steelhead (28.0 min), most likely because of the greater size of the steelhead and thehigh water velocities within the channel (2.1 m/s). This and other studies indicate most juvenilesalmonids enter gatewells of several Columbia and Snake river dams in the evening and passinto the collection channels quickly. However, this is not consistent with the natural in-rivermigration patterns of these species and represents a delay in dam passage.
dc.description.pages455-463
dc.identifier.urihttps://hdl.handle.net/20.500.14394/28049
dc.relation.ispartofNorth American Journal of Fisheries Management
dc.source.issue21
dc.source.statuspublished
dc.subjectchannel
dc.subjectchinook
dc.subjectColumbia River
dc.subjectjuvenile
dc.subjectsalmon
dc.subjectsteelhead
dc.subjectMcNary Dam
dc.subjectbypass
dc.subjectwater velocity
dc.subjectsalmonids
dc.subjectgatewells
dc.subjectSnake River
dc.subjectdams
dc.subjectmigration
dc.titleResidence times and diel passage distributions of radio-tagged juvenile spring Chinook salmon and steelhead in a gatewell fish collection channel of a Columbia River dam
dc.typearticle
dc.typearticle
digcom.contributor.authorBeeman, J W
digcom.contributor.authorMaule, A G
digcom.identifierfishpassage_journal_articles/488
digcom.identifier.contextkey2474751
digcom.identifier.submissionpathfishpassage_journal_articles/488
dspace.entity.typePublication
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