BROOD YEAR 2016 JUVENILE SALMONID PRODUCTION AND PASSAGE INDICES AT RED BLUFF DIVERSION DAM

Brood year 2016 (BY2016) juvenile winter Chinook salmon estimated passage at Red Bluff Diversion Dam (RBDD) was 537,517 for fry and pre-smolt/smolts combined. The fry-equivalent rotary trap juvenile production index (JPI) was estimated at 640,149 with the lower and upper 90% confidence intervals (CI) extending from 429,876 to 850,422 juveniles, respectively. The estimated egg-to-fry (ETF) survival rate, based on the brood year 2016 winter Chinook fry-equivalent JPI was 23.7%. The range of ETF survival rates based on the 90% CI were 15.9% to 31.5%.