2016 Snake River Adult Sockeye Passage and Smolt Condition

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Presentation transcript:

2016 Snake River Adult Sockeye Passage and Smolt Condition Russ Kiefer Idaho Department of Fish & Game

Passage Survival from Bonneville upstream: 2015

FPC Report: Temperature exposure from Bonneville to The Dalles, The Dalles to McNary, and Bonneville to McNary Dam by return year and origin.

2016 Water Temperatures (FPC)

2015 & 2016 Run Sizes Total sockeye BON return was ~500,000 in 2015 with a forecast of ~110,000 for 2016. Total run size at BON was ~342,000 for 2016. Snake River sockeye BON return was ~4,000 in 2015 with a forecast of 1,348 for 2016. Updated run size at BON is ~ 1,032 for 2016. Update Snake Stuff

2016 Sockeye Salmon Passage 342,000 262,000 Talk about conversion being good in 2016. Actual discrepancy between RIS & MCN due to fallback, lock use at MNC, and kokanee flushed out of FDR and counted as sockeye at RIS. 814 310,000

Ladder Temperature Improvements

LGR Ladder Improvements

LGR Ladder Exit Shower

Approximately 50 cfs in flow 2015 Production Targets Able to Release 494 adults into RFL and 98 adults into Pettit this year and meet natural production release targets Able to Spawn >1500 adults to generate ~ 800K smolts for production (2X more than any previous release) Backed down 1M Smolt Release to release adults into natural environment In the Future: Enough eggs are taken from captive broodstock each year to meet broodstock and production goals so should be able to meet targets with CB fish only Anadromous fish confer fitness benefits to the program (especially if they made it in-river the entire way) Approximately 50 cfs in flow

Little Goose Dam Ladder Cooling Systems Rental Pumps 2016 & 2017 To Right is Initial Design of Permanent Structure for 2018

Table 1. Conversion rates (% Survival) for Snake River Sockeye Salmon from Bonneville to the Sawtooth Basin traps. Average Survival BON-TDA TDA-MCN MCN-IHD IHD-LMO LMO-LGO LGO- LGR LGR-BASIN (08-14)* 84% 78% 98% 99% 97% na 55% 2015 63% 24% 61% 81% 66% 82% 26% 2016 87% 60% *2008-2014 data obtained from Crozier et al. (2015).

Adult Questions?