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Out-migration Timing
Steelhead Smolt Out-migration triggered by the first significant discharge spike in late autumn or early winter.
Juveniles spend a significant amount of time overwintering in the lower section of tributaries and the Yakima River
Notes:
Conclusions: Not only is the lower yakima and lower portion of tributaries important as pre-spawn staging habitat for adults but also overwintering and staging habitat for juveniles during out migration.