2005 Coho Juvenile Migration and Radio Tracking Distribution Presented By: Todd Newsome Fisheries Biologist for the Yakama Nation

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Acknowledgements

Background

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2005, Juvenile Survival Summary

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50% Passage, Natural vs. Hatchery 2nd Step in Isolating and reducing possible mortality (Timing)

Over-winter Survival Studies

Over-winter Results Year 1

Preliminary, Over-winter Results Year 2

Adult Returns

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Redd Distribution

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Coho Highlights

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Redd Caps

Radio Tracking Objectives Radio tag approximately 100 randomly collected adult Coho at Prosser Dam. Only 72 were radio tagged. Determine spawning distribution of returning Coho to the Yakima River. Test trapping and radio tagging adult Coho at Cowiche and Roza Dams. From radio tracking, use redd distribution to locate areas of wild rearing, perform summer snorkeling survey to assess abundance and distribution.

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Baseline Data Monitoring

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The End