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Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at John Day Dam in Summer 1989

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dc.contributor.authorMcFadden, B D
dc.contributor.authorHedgepeth, J
dc.date2023-09-23T05:51:40.000
dc.date.accessioned2024-04-26T17:30:01Z
dc.date.available2024-04-26T17:30:01Z
dc.date.issued1990
dc.descriptionSponsored by U.S. Army Corps of Engineers, Portland District
dc.description.abstractNone supplied. Summary: The general objective of the hydroacoustic study at John Day Dam was to monitor smolt passage into the turbines and spillway. Passage estimates were reported in 'pseudo-real-time,' (27 hr time lapse). Specific objectives were as follows: 1) Determine the hourly estimates of total numbers of juvenile salmonids passing through the powerhouse, spillway, and total project, using single-beam hydroacoustic techniques, 2) Determine how effective the spillway is in bypassing juvenile salmonids, 3) Determine the horizontal and vertical distributions of juvenile salmonid passage into the powerhouse and spillway, 4) Determine weekly estimates of the target strengths of fish, using the dual-beam and deconvolution techniques, at the powerhouse and spillway entrances, and 5) Determine passage rates inside one Turbine 3 intake using hydroacoustic monitoring and correlate these with NMFS airlift samples.
dc.identifier.urihttps://hdl.handle.net/20.500.14394/29373
dc.source.statuspublished
dc.subjectArmy Corps of Engineers
dc.subjectColumbia River
dc.subjectday/night samples
dc.subjectdownstream fish passage
dc.subjectfish passage
dc.subjecthorizontal
dc.subjecthydroacoustics
dc.subjectintake
dc.subjectJohn Day Dam
dc.subjectjuvenile
dc.subjectsalmon
dc.subjectsalmonids
dc.subjectsmolt
dc.subjectspillway
dc.subjectturbines
dc.subjectvertical distribution
dc.subjectsmolt passage
dc.subjectentrance
dc.subjecthydroacoustic monitoring
dc.subjectmonitoring
dc.titleHydroacoustic Evaluation of Juvenile Salmonid Fish Passage at John Day Dam in Summer 1989
dc.typearticle
dc.typearticle
digcom.contributor.authorMcFadden, B D
digcom.contributor.authorHedgepeth, J
digcom.identifierfishpassage_unpublished_works/140
digcom.identifier.contextkey2523461
digcom.identifier.submissionpathfishpassage_unpublished_works/140
dspace.entity.typePublication
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