Sandy River Fisheries Management Update. Todd Alsbury District Fish Biologist (Cascade Unit)

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1 Sandy River Fisheries Management Update Todd Alsbury District Fish Biologist (Cascade Unit)

2 Presenta(on Outline Remembering Marmot Dam Sandy River Popula(on Es(mates Sandy Spring Chinook Stray Control Program Willame?e Spring Chinook 2015

3

4 Marmot Dam Little Sandy Dam Marmot Dam removed during the summer of 2007 (complete in October) Little Sandy Dam removed in 2008

5 Pre-dam removal Post-dam removal View upstream of footbridge Post-dam removal

6 Marmot Dam The former Marmot Dam caused delay of upstream migrants (stress) and diversion of juveniles ( StW fry in par(cular) The Marmot Acclima(on pond was developed to enhance fisheries at the base of and below the dam The dam and associated fish ladder provided the ability to count, sort, and remove hatchery fish The removal of Marmot reduced the ability to effec(vely manage hatchery fish that stray from their point of release No issues with winter/summer steelhead and coho compared to spring Chinook with regard to stray

7 Sandy Winter Steelhead Increasing trend in abundance over the past 5 years >4,500 wild adults in 2015 Very popular hatchery StW program with limited hatchery influence in the wild 3,000-4,000 hatchery adults return annually Propor(on of hatchery origin spawners (phos) <10% and typically <5% Small reintroduced popula(on upstream of Sandy Hatchery beginning to contribute

8 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% ,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5, # of Adults Sandy Winter Steelhead StW % Hatchery

9 Winter Steelhead Harvest Hood River Clackamas River Sandy River Wilson River Siletz River N Fk Nehalem

10 Sandy Coho Largest return of wild adults in over 15 years in ,942 adults (1,200 ave. over 10 previous years) Poor return in 2015 (data not available) Hatchery returns ~5,000 annually Historically >12,000 adults per year prior to program reduc(on in 2011 Sport fishery not what it used to be Reintroduc(on program upstream of Sandy Hatchery contribu(ng significantly to produc(on Smolt trap counts confirm

11 Sandy Coho % % % #of Adults % Co % Hatchery % % %

12 Sandy Spring Chinook Increasing trend in abundance with over 1,500 adults 6 of the last 10 years (average 1,800) 2,447 wild adults in 2015 Historically popular hatchery ChS program that now only returns ~1,000 adults compared to >5,000 prior to Difficult accessing fish now that release is lower in river and fish do not stray Boa(ng is challenging where fish now hold through summer months (gorge sec(on below Bull Run)

13 Sandy Spring Chinook 3, % 3,000 90% 80% 2,500 70% # of Adults 2,000 1,500 60% 50% 40% ChS % Hatchery 1,000 30% % 10% %

14 5,000 4,500 Clackamas wild Sandy Wild Sandy Hatchery 4,000 3,500 Marmot Dam Removed Adult Chinook 3,000 2,500 2,000 1,500 1, Run Year Number of spring Chinook salmon in the Sandy River basin (hatchery and wild), and in the Clackamas Basin upstream of North Fork Dam (wild), Number of fish in the Sandy River basin in was esymated from redd counts. For , the number of fish was esymated with the relayonship of counts at Marmot Dam to redd counts. The proporyon of wild and hatchery fish was esymated from recovery of carcasses.

15 Sandy ChS Stray Control Program

16 Percentage of hatchery- origin spring Chinook salmon in the spawning populayon of Sandy River basin upstream of the Marmot Dam site, % 80% Marmot Dam Removed Hatchery Origin 60% 40% 20% 0% Run Year

17 Sandy River spring Chinook stray reducyon program 2015 Weirs operated in Salmon, Zigzag, and Bull Run rivers to control hatchery stray Rigid picket weirs in Salmon and Zigzag Resistance board weir in Bull Run River Goal to operate from July 1 through mid- October Acclima(on in the Bull Run River star(ng in 2011 Adult ChS inside trap box

18 Sandy Spring Chinook 2015 Bull Run Salmon Zig Zag Trap Totals Hatchery Chinook 137 Hatchery Chinook 64 Hatchery Chinook 36 Total Hatchery Chinook 237 Wild Chinook 63 Wild Chinook 904 Wild Chinook 538 Total Wild Chinook 1505 Total Wild Wild Steelhead 59 Wild Steelhead 3 Wild Steelhead 3 Steelhead 65 Hatchery Steelhead 4 Hatchery Steelhead 1 Hatchery Steelhead 27 Total Hatchery Steelhead 32 Coho 20 Coho 0 Coho 16 Total Coho 36 Bull Run Hatchery rate Salmon River Zig Zag River Hatchery rate Hatchery rate

19 Salmon River weir

20 Bull Run Resistance Board Weir

21 Bull Run RBW 9/29/13

22 Spring Chinook AcclimaYon in the Sandy Basin Bull Run River Spring chinook program reduced from ~450,000 in late 90 s to 132,000 since Started acclima(ng smolts in the Bull Run River in 2012 Acclimated and released 132,000 smolts in Es(mate ~1,000 adults returning to Bull Run in the future Reduce number of fish available for harvest at mouth of Cedar Creek and upstream above former Marmot Dam Full- spanning (resistance- type) weir opera(ng July- November near mouth of Bull Run to sort returning adults

23 Bull Run AcclimaYon Pond

24 Percentage of fin- clipped spring Chinook salmon in the Zigzag (A) and Salmon (B) rivers, and in the upper Sandy River basin (C) with and without traps, The 10% line represents the conservayon and recovery objecyve for the proporyon of hatchery- origin spawners (phos)

25 Willame<e Spring Chinook ,046 adult ChS passed over Willame?e Falls (82.4% hatchery fish=42,062) 4,608 hatchery ChS returned to Clackamas Final run size not complete but expected to be > than pre- season forecast Severe mortality event occurred in late June due to high temperature (>75 deg) Water temperature reached 75 on June 12 th, peaked at 82 on July 11 th

26 Willame^e Spring Chinook 2015 Started seeing dead fish in Willame?e then Clackamas. High temperature not the lead cause of death Columnaris bacteria bloomed in warm water and a?aches to fish on gills, eyes, fins. Fish eventually succumb to bacteria since they can not respire normally.

27 Willame^e Spring Chinook 2015 Clackamas River 657 pre- spawn mortali(es Majority of fish found from Carver downstream to Riverside Park Willame?e (downstream of falls) 478 pre- spawn mortali(es 85% hatchery fish/15% wild fish (same as falls counts) 64 of 66 (97%) CWT+ fish were from Upper Willame?e hatcheries

28 Clackamas River adjacent to Barton Park Boat Ramp 6/19/15 Chrome Notice beer cans look a little like dead fish

29 Clackamas River near Carver 6/19/15 Notice bacterial growth near fins, mouth, and gills

30 Clackamas River upstream of Riverside Park 6/19/15

31 Johnson Creek near Milwaukie 7/14/15

32

33 Thank you! Todd Alsbury District Fish Biologist Oregon Dept. of Fish & Wildlife

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