Author: Russell A. Moursund
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 58
Book Description
Hydroacoustic Evaluation of Downstream Fish Passage at John Day Dam in 2000
Author: Russell A. Moursund
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 58
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 58
Book Description
Hydroacoustic Evaluation of Downstream Fish Passage at John Day Dam in 2002
Author: Russell A. Moursund
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 150
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 150
Book Description
Hydroacoustic Evaluation of Fish Passage at John Day Dam in 2000
Author: Russell A. Moursund
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 17
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 17
Book Description
Fixed-aspect Hydroacoustic Evaluation of Project Fish Passage at John Day Dam During 1999
Author: Samuel V. Johnston
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages :
Book Description
Progress Report, Fish Passage Development and Evaluation Program
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 816
Book Description
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 816
Book Description
Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at John Day Dam in Summer 1988
Author: David A. Ouellette
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages :
Book Description
Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at John Day Dam in Summer 1989
Author: Brian D. McFadden
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 107
Book Description
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 107
Book Description
Hydroacoustic Evaluation of the Spill Program for Fish Passage at John Day Dam in 1987
Author: Llew Johnson
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 93
Book Description
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 93
Book Description
Optimization of Hydroacoustic Deployments at John Day Dam
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This report describes short-term studies conducted in late November and early December 2001 to optimize hydroacoustic sampling techniques for John Day Dam before the 2002 fish passage efficiency (FPE) study. Knowledge gained in this study should significantly improve hydroacoustic sampling and the accuracy of estimates of fish passage at two locations that have presented problems in past studies. The spillway has been most problematic because many fish detected there were not entrained. Without correction, non-commitment of fish can result in multiple detections and overestimation of fish passage and FPE. Trash-rack-mounted, down-looking transducers for sampling unguided fish at a submerged traveling screen (STS) also have posed problems because the beam was aimed so far downstream that researchers had concerns about fish aspect and detectability. The deployments, aiming angles, and ping rates described here should eliminate all problems encountered in previous studies. This report describes hydroacoustic evaluations. The spill-bay deployment identified in this study should completely eliminate multiple detections of fish by limiting the sample volume for counting fish to the deep high-discharge volume adjacent to the gate. Results from testing of transducers deployed in a turbine intake with an STS suggest that, after testing in 2002, it may be possible to cut the number of powerhouse transducers sampling STS units by 50% or to double the spatial sampling coverage with the same number of transducers, all while improving detectability.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This report describes short-term studies conducted in late November and early December 2001 to optimize hydroacoustic sampling techniques for John Day Dam before the 2002 fish passage efficiency (FPE) study. Knowledge gained in this study should significantly improve hydroacoustic sampling and the accuracy of estimates of fish passage at two locations that have presented problems in past studies. The spillway has been most problematic because many fish detected there were not entrained. Without correction, non-commitment of fish can result in multiple detections and overestimation of fish passage and FPE. Trash-rack-mounted, down-looking transducers for sampling unguided fish at a submerged traveling screen (STS) also have posed problems because the beam was aimed so far downstream that researchers had concerns about fish aspect and detectability. The deployments, aiming angles, and ping rates described here should eliminate all problems encountered in previous studies. This report describes hydroacoustic evaluations. The spill-bay deployment identified in this study should completely eliminate multiple detections of fish by limiting the sample volume for counting fish to the deep high-discharge volume adjacent to the gate. Results from testing of transducers deployed in a turbine intake with an STS suggest that, after testing in 2002, it may be possible to cut the number of powerhouse transducers sampling STS units by 50% or to double the spatial sampling coverage with the same number of transducers, all while improving detectability.
Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at John Day Dam in Summer 1986
Author: Sue Kuehl
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 128
Book Description
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 128
Book Description