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Enhancing Hatchery Subyearling Chinook Survival in LGR to McN: Analysis of Fish Passage Data

Explore factors influencing hatchery subyearling Chinook survival from LGR to McN through detailed analysis of fish passage data. The study includes releases from various cohorts and release groups, assessing the impact of environmental conditions, water transit time, and average temperature on survival rates. Collection for transportation started on July 20 at McNary Dam, with high proportions of transport documented. This research aids in understanding survival dynamics and improving fish passage strategies for subyearling Chinook.

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Enhancing Hatchery Subyearling Chinook Survival in LGR to McN: Analysis of Fish Passage Data

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  1. Hatchery Subyearling Chinook Survival LGR to McN Jerry McCann Fish Passage Center

  2. Subyearling Releases included in Survival Estimate and Transport Proportion estimate • 4 cohorts based on LGR passage date 5/20-6/2, 6/3-6/16, 6/17-6/30, 7/1-7/15 • Release groups included CJRAP,GRAND1,PLAP,SNAKE3,SNAKE4,BCCAP,CEFLAF,LUGUAF, NLVP,NPTH • PIT Release dates between 5/22 and 7/6 LGR Timing McNary Timing

  3. Hatchery subyearling Chinook Survival LGR to McN

  4. Environmental Conditions Water Transit Time Avg Temp C Avg Spill Proportion

  5. Transport Proportions Collection for Transportation began on July 20 at McNary Dam An estimated 97% of cumulative Snake River Ch0 13H PIT passed by that date.

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