2015 Hydroacoustic Technology Inc Presented January 2015 The 2014 Mayfield Dam study effort focused on smolt migration through the Juvenile Bypass System JBS Investigate and determine the causes of reduced survival through the JBS for steelhead ID: 811143
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Slide1
Results from the 2014 Mayfield Dam Juvenile Bypass Smolt Survival Study
© 2015 Hydroacoustic Technology, Inc. Presented January 2015.
Slide2The 2014 Mayfield Dam study effort focused on smolt migration through the Juvenile Bypass System (JBS).
Investigate and determine the causes of reduced survival through the JBS for steelhead,
coho
and chinook smolts
.
Specifically, examine each section of the JBS: from the louver bay
downwell, through the bypass pipe to the secondary separator, through the bypass pipe to the raceway above the counting house, through the counting house, and finally through the bypass pipe to the tailrace.
Objectives
Slide3Two Separate Survival Studies
Juvenile Bypass Survival Study - 2014
Acoustic Tag Paired Release-Recapture Study
Visible Implant Elastomer Marking Release-Recapture Study
Slide4Acoustic Tag Release-Recapture Study Schematic
Acoustic Tag JBS Survival Study
Summary of the Acoustic Tag Releases for the Steelhead, Coho and Chinook Smolts
Species
Release Location
Number of Releases
First Release Date
Last Release Date
Number Tagged Fish Released
Steelhead
Forebay
5
5/7/2014
6/4/2014
148
Steelhead
Tailrace
5
5/9/2014
6/6/2014
100
Coho
Forebay
5
6/11/2014
7/9/2014
152
Coho
Tailrace
5
6/13/2014
7/11/2014
100
Chinook
Forebay
5
10/8/2014
11/5/2014
151
Chinook
Tailrace
5
10/10/2014
11/6/2014
101
Totals
752
Slide5Acoustic Tag Release-Recapture Study Schematic
Acoustic Tag JBS Survival Study
Slide6VIE Release-Recapture Study Schematic
VIE JBS Survival Study
Summary of the VIE Releases for the Steelhead, Coho and Chinook Smolts
Slide7VIE Release-Recapture Study Schematic
VIE JBS Survival Study
Slide8Acoustic Tag Study – Mayfield Dam Site
Acoustic tag release locations, hydrophone locations, and receiver location at Mayfield Dam
Slide9Acoustic Tag Study – Detection Sites
Mayfield Dam and downstream detection array sites for the acoustic tag study
Slide10Acoustic Tag Study Results - Steelhead
Fish length distribution of acoustically tagged steelhead smolts
Fish weight distribution of acoustically tagged steelhead smolts
Slide11Acoustic Tag Study Results - Coho
Fish length distribution of acoustically tagged coho smolts
Fish weight distribution of acoustically tagged coho smolts
Slide12Acoustic Tag Study Results - Chinook
Fish length distribution of acoustically tagged Chinook smolts
Fish weight distribution of acoustically tagged Chinook smolts
Slide13Cowlitz River Flow at Mayfield Dam in 2014
Cowlitz River daily average flow rates at Mayfield Dam
Cowlitz River monthly average flow rates at Mayfield Dam
Slide14Fish Passage Run Timing at Mayfield Dam
Monthly percent of smolts passing through the bypass system
Monthly percent of released acoustically tagged smolts
Slide15Travel and Holding Times through the JBS and Downstream
Travel and holding times for the three species of acoustically tagged and released smolts in the louver bay downwells
Slide16Travel and Holding Times through the JBS and Downstream
Travel and holding times for the three species of acoustically tagged and released smolts in the Mayfield Dam tailrace
Slide17Acoustic Tag Bypass Reach Survival - Steelhead
Upper Barrier Detection Site
Mayfield Dam Bypass Detection Sites
Slide18Acoustic Tag Bypass Reach Survival - Coho
Upper Barrier Detection Site
Mayfield Dam Bypass Detection Sites
Slide19Acoustic Tag Bypass Reach Survival - Chinook
Upper Barrier Detection Site
Mayfield Dam Bypass Detection Sites
Slide20Chinook parasite loads
Internal - Nematode
P
hilonema oncorhynchi
External -
Copepod
Salmincola californiensis
Slide21VIE Reach Bypass Survival - Chinook
Note: This survival is measured from the louver bay downwells through downstream of the secondary separator. The nearest comparable acoustic tag estimate is the secondary separator to transfer tank survival (i.e. ).
Slide22Acoustic Tag Bypass Survival - Steelhead
Mayfield Dam Forebay to Tailrace
Slide23Acoustic Tag Bypass Survival - Coho
Mayfield Dam Forebay to Tailrace
Slide24Acoustic Tag Bypass Survival - Chinook
Mayfield Dam Forebay to Tailrace
Slide25Thank You
© 2015 Hydroacoustic Technology, Inc. Presented January 2015.