Download - Lostine River telemetry_NAFS_IW_8-18-2015
EFFECTS OF IRRIGATION DIVERSION
STRUCTURES ON CHINOOK
SALMON SPAWNING MIGRATION
Ian Wilson1, Shane Vatland1, James Harbeck1 and
Aaron Maxwell2, 1Department of Fisheries Resource
Management, The Freshwater Trust2
SPAWNING
FEEDING REFUGIA
MOVEMENTMOVEMENT
MOVEMENT
COMPLETE PARTIAL NONEXISTENT
IMPROVING FISH PASSAGE BARRIERS
o Preserve instream flow
o Habitat projects
o Monitoring
LOSTINE RIVER RADIO TELEMETRY STUDY
oMonitor migration behavior
oEstimate discharge and passage at
irrigation diversions
oEvaluate distribution relative to arrival
timing
0
5
10
15
20
25
1-J
un
8-J
un
15
-Ju
n
22
-Ju
n
29
-Ju
n
6-J
ul
13
-Ju
l
20
-Ju
l
27
-Ju
l
3-A
ug
10
-Au
g
17
-Au
g
24
-Au
g
31
-Au
g
7-S
ep
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Pe
rce
nt
of ru
n
Week number with date
LATEEARLY
Fixed Site Antenna Configuration
Water Flow Direction
Receiver
BoxD
ive
rsio
n W
eir
Field of
DetectionField of
Detection
104
152
75
13
55
10
Tulley Hill
Clearwater
Caudle Lane
Lostine Diversion
Sheep Ridge
Pole Bridge
Tulley Hill
Clearwater
Caudle Lane
Lostine Diversion
Sheep Ridge
Pole Bridge
0
5
10
15
20
25
30
35
Riv
er
kilo
me
ter
Tagging date
2014
RESTORATION OF THE LOSTINE
DIVERSION
oMonitor Chinook salmon passage time before
and after a restoration
oEvaluate discharge and passage events
oDetermine passage efficiency
LOSTINE DIVERSION RESTORATION
Before After
8
74
9
35
Caudle Lane
Lostine Diversion
Caudle Lane
Lostine Diversion
BEFORE 2010-12
AFTER 2013-14
0
50
100
150
200
250
300
350
400
0
1
2
3
4
5
Dis
ch
arg
e (
cfs
)
Nu
mb
er
of
fish
pa
sse
d
Date of passage
2014
DISCUSSION
oNatural and artificial barriers can limit habitat connectivity for
Chinook salmon, although restoration of barriers can result in
increased connectivity
oImproved passage success and reduced passage time increase
the likelihood that fish can reach critical spawning habitat
oArrival timing and flow conditions promote access to spawning
habitat in upper reaches of the Lostine River
DISCUSSION
oRadio telemetry data informed managers of habitat restoration
effectiveness and prioritization
oThe explicit relationship between passage time and discharge
needs further exploration
oFish passed diversions at discharge lower than previously
believed, yet this may not reflect the total cost of migrating at
low discharge and elevated water temperatures
QUESTIONS?