Date requested: 2/26/2018 12:58:20 PM

Requester: Debbie Milks

Requester email: deborah.milks@dfw.wa.gov

Request status: Approved

Action and Files
Target group Site Action Tags for Action Total Tags Released Start Date End date Additional Info
Lyons Ferry onstation yearling fall Chinook Transport Monitor 15,000 15,000 4/1/2018 12/31/2018
Title: Performance Evaluation of PIT tagged yearling Chinook released at Lyons Ferry Hatchery 2018
Project Lead: Debbie Milks
Agency: WDFW
Project Number:
Funding Agency: LSRCP
Project Objectives: The objectives of this study are multifaceted. The main objective is to use these PIT tags to estimate adult returns to the Snake River. To do this the fish must be put in monitor mode so they represent the whole release of yearling fall Chinook from Lyons Ferry. Returns will be used to document return timing as well as assist with inseason return estimates. These fish will also be used to determine the extent of their straying above LGR Dam and their fallback rate at LGR Dam.
Study Description: Currently subyearling fall Chinook released at Lyons Ferry Hatchery are in monitor mode. The addition of the yearlings to this will allow all onstation fall Chinook releases to be monitored and returns evaluated.
Juvenile Description: Yearling fall chinook, Snake River Stock hatchery origin, ESA Threatened, broodyear 2016, scheduled for release April 2017 from Lyons Ferry Hatchery over a three day period. WDFW staff tagged approximately 30,000 of our scheduled 450,000 release.
Smolt-to-Adult Ratio: The 15000 PIT tags to represent approximately 450,000 fish. We will compare SAR estimates of CWT tagged fish with SAR estimated based solely on PIT tag detections at return.
Collection Efficiency: No. That is not a focus of this study.
Adult Description:
Certify: True