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Upstream migration in the Columbia River Basin: Lessons learned from two decades of adult
salmon and steelhead radiotelemetry projects
Matthew Keefer1, Charles Boggs1, Chris Caudill1, Brian Burke2, Tami Clabough1, Travis Dick1, Kinsey Frick2, Mike Jepson1, Dan
Joosten1, Steve Lee1, George Naughton1, & Chris Peery3
1 Department of Fish and Wildlife Sciences
University of Idaho
2 Northwest Fisheries Science Center
3 US Fish & Wildlife Service
Presentation objectives • 1) Introduce the Columbia River adult salmon
and steelhead project • 2) Examples of research questions and results
– Gross simplifications of complex animal behavior
Anadromous Fish Evaluation Program (AFEP): Adult studies
Research
Monitor Evaluate
‘Action’
Adaptive Management
“Piggyback Science” opportunity
Basic research
Applied research
Hendy Mp
Anadromous Fish Evaluation Program (AFEP): Adult studies
A B
C D
Operations: upstream & downstream passage
Fishway modifications Sea lion management
En route & prespawn mortality
Reach & migration survival, harvest
HOME ?
Straying
Methods: fish collection
Bonneville Dam
OR
WA
Adult Fish
Facility (AFF)
Fishway: dewatered Fish ladder
Trap holding pool
AFF
• 1996-2014: 26,876 radio-tagged adults – 11,505 spring-summer Chinook salmon – 7,856 summer steelhead – 6,139 fall Chinook salmon – 1,376 sockeye salmon
Methods: sample summary
Summer steelhead
Summer Chinook salmon
Intragastric radio tagging
Methods: Monitoring / Study area
Bonneville The Dalles
John Day McNary
Ice Harbor
Priest Rapids
Lower Monumental
Little Goose
Lower Granite Wanapum
• ~180 antenna sites / year • Tailraces, fishways at ~8-10 dams • Most major tributaries
– Including Snake & Upper Columbia river sites
SNAKE R.
COLUMBIA R.
1997 1998 2000 2001 2002 1997 2000 2001 2002 1997 2013 2014
Pass
ed d
am (%
)
88
90
92
94
96
98
100
102
Fishway & dam passage • Do adults successfully pass dams?
Columbia & Snake River Dam fishways effectively
pass most adult salmonids
98%
Bonneville Dam passage efficiency
• The Dalles Dam passage efficiency
1997 1998 2000 2001 2002 1997 2000 2001 2002 1997 2013 2014Pa
ssed
dam
(%)
88
90
92
94
96
98
100
102
Fishways & dam passage
98%
Some dam passage ‘failure’ associated with
fish orientation and downstream harvest
Tributary ‘overshoot’
• Do dams ‘delay’ upstream migration?
Fishways & dam passage
CJFAS 64:979-995 (2007)
Most adults pass dams quickly (Medians ≤ 1 day), but times are
highly variable & many fish must pass 8-9 dams
Many salmon pass through reservoirs at speeds of 50-75 km/d, likely offsetting some ‘delay’ at dams
1 day
CJFAS 62:930-949 (2005)
100 km
System-wide escapement • How many survive to potential spawning sites?
Sp-Su Chinook Steelhead Fa Chinook
~73% ‘escape’
~61% ~62%
~ 12-17% with unknown fate
along migration corridor
~ 8-22% reported harvested along
migration corridor
Start! SNAKE R.
COLUMBIA R.
Columbia River temperature oC
9 10 11 12 13 14 15 16 17 18 19 20 21 22
Con
vers
ion
prob
abili
ty
0.6
0.7
0.8
0.9
1.0
System-wide escapement • What affects migration survival?
Temperature (C) at Bonneville Dam14 15 16 17 18 19 20 21 22 23
Prob
abili
ty o
f sur
viva
l
0.0
0.2
0.4
0.6
0.8
1.0Probability5% CI95% CI
Sockeye salmon survival to tributaries
CJFAS 62:30-47 (2005)
Sp-Su Chinook salmon survival past 4 dams
Substantially reduced survival for some stocks exposed to
warm water temperatures
System-wide escapement • What affects migration survival?
WARM WATER HITTING RETURNING SOCKEYE HARD: NOAA SAYS MAYBE 80 PERCENT MORTALITY FOR UPPER COLUMBIA Friday, July 31, 2015
UPPER COLUMBIA SOCKEYE SEARCHING FOR COOLER WATER FOUND DEAD, DISTRESSED IN DESCHUTES RIVER MOUTH Friday, July 10, 2015
2015: exceptionally warm water
250,000-400,000 Sockeye mortalities
Number of fallback events
1 2 3 4 5 6 7 8 9 10
Perc
ent (
%)
0
2
4
6
8
10
Perc
ent (
%)
0
2
4
6
8
10
In-riverBarged
A) Chinook salmon
B) Steelhead
System-wide escapement • What affects migration success?
Juvenile transport barge
Barged Chinook salmon: ~3.4 times more likely to
fall back at dams as adults
Barged steelhead: ~1.7 times more likely to
fall back at dams
Barged fish had reduced survival to the Snake River (~ 10%)
Barging impairs adult orientation: - Increased fallback at dams
- Increased permanent straying
Downstream fallback 16 fallback events 24 dam passages
~ 3,200 km
Volitional and non-volitional fallback is common: 15-21% of each run
Results in reduced survival (1-4% impact) for each run
Key challenge: minimize fallback risks while providing safe routes
for ‘overshoot’ fish and kelts
Archival tags: temperature & depth
Please see poster in: ‘Conserving cool- and cold-
water fish’ symposium
CJFAS 66:1731-1747 (2009)
Pinniped predation • How do predators affect
salmon behavior, survival? • Does impact vary among
ESA-listed populations?
CJFAS 68:1615-1624 (2011)
MNBC
ODFW
Pinniped predation
Early-timed Chinook salmon at high risk
Population-specific migration timing
& abundance
Predation risk
Several ESA-listed populations in the Snake and upper
Columbia river basins
J Jensen
+ Observed sea lion predation rates
Inter-population variability
Population timing sequences are stable within species &
within life history types
River & Ocean environment predictably
influence run timing
Flow Temperature
Fall Chinook
composition
Inter-population variability
CJFAS 66:1734-1747 (2009)
Warm-water exposure & thermoregulation vary widely among steelhead populations
‘Late’ steelhead far more likely to overwinter in
Hydrosystem reservoirs
Steelhead release date
1 Jun 1 Jul 1 Aug 1 Sep 1 Oct 1 Nov
Pre
dict
ed p
roba
bilit
y of
ove
rwin
terin
g
0.0
0.1
0.2
0.3
0.4
Steelhead timing
Main stem overwintering