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Monitoring the Migrations of Wild Snake River Spring/Summer
Chinook Salmon Juveniles, 2010-2011
Stephen Achord, Benjamin P. Sandford, Eric E. Hockersmith, Jesse J. Lamb,
Kenneth W. McIntyre, Neil N. Paasch, and Richard W. Zabel
Report of research by
Fish Ecology Division
Northwest Fisheries Science Center
National Marine Fisheries Service
National Oceanic and Atmospheric Administration
2725 Montlake Boulevard East
Seattle, Washington 98112-2097
for
U.S. Department of Energy
Bonneville Power Administration
Division of Fish and Wildlife
P.O. Box 3621
Portland, Oregon 97208-3621
Project 1991-028-00, Contract No. CR-172692
Covering the period from mid-July 2010 to mid-July 2011
May 2012
ii
iii
EXECUTIVE SUMMARY
This report provides results from an ongoing project to monitor the migration
behavior and survival of wild juvenile spring/summer Chinook salmon in the Snake River
Basin. Data reported are from detections of PIT-tagged fish from late summer 2010 to
mid-2011. In summer 2010, the National Marine Fisheries Service (NMFS) tagged fish
in Idaho streams, and the Oregon Department of Fish and Wildlife (ODFW) tagged fish
in Oregon streams. Our analyses include migration behavior and estimated survival of
fish at instream PIT-tag monitors and arrival timing and estimated survival to Lower
Granite Dam. Principal results from tagging and interrogation during 2010-2011 are
listed below:
1) From July to September 2010, we PIT tagged and released 15,210 wild Chinook
salmon parr in 16 Idaho streams or sample areas.
2) Overall observed mortality from collection, handling, tagging, and after a 24-h
holding period was 1.4%.
3) Valley Creek—Of the 2,513 Chinook salmon parr PIT tagged and released in
Valley Creek in summer 2010, 764 (30.4%) were detected at two instream PIT-tag
monitoring systems in lower Valley Creek from late summer 2010 to spring 2011.
Of these 764 detected fish, 59.9% were detected in late summer/fall, 32.6% in
winter, and 7.5% in spring. Estimated parr-to-smolt survival to Lower Granite Dam
was 17.9% for the late summer/fall group, 22.2% for the winter group, and 65.3%
for the spring group. Based on detections at downstream dams, the overall detection
efficiency of Valley Creek upper (VC1) or lower (VC2) monitors was 75.9%.
Using this efficiency rate, we estimated that 40.1% of all summer-tagged parr
survived to pass the Valley Creek monitors, and their survival from the downstream
monitors to Lower Granite Dam was 22.8%. Overall estimated parr-to-smolt
survival to the dam for all summer-tagged parr from this stream was 8.0%.
4) Big Creek—Of the 1,145 Chinook salmon parr PIT tagged and released in upper
Big Creek during summer 2010, 46 (4.0%) were detected at two instream PIT-tag
monitoring systems in lower Big Creek from late summer 2010 to spring 2011. Of
these 46 fish, 78.3% were detected in late summer/fall, 13.0% in winter, and 8.7%
in spring. Estimated parr-to-smolt survival to Lower Granite Dam for each of these
groups was 18.4% for the late summer/fall group, 0.0% for the winter group, and
163.3% for the spring group. Based on detections at downstream dams, the overall
detection efficiency of Big Creek upper (TAY-a) or lower (TAY-b) monitors was
8.8%. Using this efficiency rate, we estimated that 45.8% of all summer-tagged
parr from upper Big Creek survived to pass the monitors on lower Big Creek, and
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their survival from the downstream monitors to Lower Granite Dam was 28.6%.
Overall estimated parr-to-smolt survival for all summer-tagged parr from this stream
(area) to the dam was 12.1%.
Of the 1,413 Chinook salmon parr that were PIT tagged and released to lower Big
Creek during summer 2010, 244 (17.3%) were detected at the two instream PIT-tag
monitoring systems in lower Big Creek from late summer 2010 to spring 2011. Of
these 244 fish, 73.4% were detected in late summer/fall, 20.5% in winter, and 6.1%
in spring. Estimated parr-to-smolt survival to Lower Granite Dam for each of these
groups was 28.8% for the late summer/fall group and 27.4% for the winter group.
No fish from the spring group were detected at the dam. Based on detections at
downstream dams, the overall detection efficiency of Big Creek upper (TAY-a) or
lower (TAY-b) monitors was 20.1%. Using this efficiency rate, we estimated that
86.0% of all summer-tagged parr survived to the lower Big Creek monitors, and
their estimated survival from that point to Lower Granite Dam was 26.7%. Overall
estimated parr-to-smolt survival for all summer-tagged parr from this stream (area)
at the dam was 23.2%.
Increasing the number of fish tagged and/or the number of antennas should provide
better precision for these survival estimates in the future. Development and
maintenance of the instream PIT-tag monitoring systems for both Valley and Big
Creeks was turned over to the Integrated Status and Effectiveness Monitoring
Program (ISEMP) project in 2010.
5) Secesh River—Of the 1,459 Chinook salmon parr PIT tagged and released in the
Secesh River and Lake Creek in summer 2010, 247 (16.9%) were detected at the
instream PIT-tag monitoring system in the lower Secesh River (near Zena Creek)
from late summer 2010 to spring 2011. Of these 247 fish, 82.6% were detected in
late summer/fall, 14.2% in winter, and 3.2% in spring. Estimated parr-to-smolt
survival to Lower Granite Dam for each of these groups was 37.2% for the late
summer/fall group, 21.3% for the winter group, and 70.3% for the spring group.
Using detections at both the instream monitors and at the dam, we estimated that
48.8% of all summer-tagged parr survived to the lower Secesh River monitors near
Zena Creek and their estimated survival from that point to Lower Granite Dam was
36.0%. Overall estimated parr-to-smolt survival to the dam for all summer-tagged
parr from these streams (areas) was 15.4%.
6) South Fork Salmon River—Of the 1,034 Chinook salmon parr PIT tagged and
released in the upper South Fork Salmon River during summer 2010, only 11 were
detected at the instream PIT-tag monitoring system in the South Fork Salmon River
near Krassel Creek from late summer 2010 to spring 2011. For our study fish,
detection efficiency of the Krassel Creek monitoring site declined from 52.7% in
2009-2010 to 1-2% in 2010-2011.
v
At the two additional instream PIT-tag monitoring systems (one in the lower South
Fork Salmon River and one at Guard Station Road Bridge), only 8 fish were
detected from releases to the Secesh and South Fork Salmon Rivers and Lake Creek.
The three South Fork Salmon River monitoring sites were developed by the ISEMP.
7) At Little Goose Dam in 2011, length and/or weight were measured for 458
recaptured fish from 16 Idaho stream populations. Fish had grown an average of
41.1 mm in length and 9.1 g in weight over an average of 278 d. Their mean
condition factor declined from 1.29 at release (parr) to 1.04 at recapture (smolt).
8) Mean length at release was significantly greater for fish that were detected than for
fish that were not detected the following spring and summer (P < 0.0001).
9) Fish that arrived at Lower Granite Dam in April and May had been significantly
larger (FL) at release than fish arriving after May (P < 0.0001), although only 40
fish migrated after May.
10) In 2011, peak detections at Lower Granite Dam of parr tagged during summer 2010
(from the 16 stream populations in Idaho and 4 streams in Oregon) occurred from
10 to 14 May during increasing flows of 101.1-140.2 kcfs. Respective dates of the
10th, 50th, and 90th passage percentiles were 14 April, 10 May, and 24 May.
11) In 2010-2011, average estimated parr-to-smolt survival to Lower Granite Dam for
Idaho and Oregon streams combined was 16.8% (range 8.0-35.9% depending on
stream of origin). For fish from Idaho streams, average estimated parr-to-smolt
survival was 17.4%.
In 2011, we observed moderate-high to high flows throughout the spring
migration season, with the highest flows later in the season (June) accompanied by
weather in the Snake River basin that was cooler and wetter than normal. Clearly,
complex interrelationships of several factors drive the annual migration timing of these
populations.
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CONTENTS
EXECUTIVE SUMMARY ............................................................................................... iii
INTRODUCTION .............................................................................................................. 1
METHODS ......................................................................................................................... 3
Fish Collection and Tagging ................................................................................... 3
Instream PIT-Tag Monitors .................................................................................... 3
Juvenile Migrant Traps ........................................................................................... 6
Recaptures at Dams................................................................................................. 7
Interrogation Systems at Snake and Lower Columbia River Dams ....................... 7
Data Analyses ......................................................................................................... 8
Probability Estimates of Detection and Survival ........................................ 8
Migration Timing ...................................................................................... 10
Environmental Information ................................................................................... 11
RESULTS ......................................................................................................................... 13
Fish Collection and Tagging ................................................................................. 13
Detections at In-stream PIT-Tag Monitors ........................................................... 16
Valley Creek ............................................................................................. 16
Lower Big Creek ....................................................................................... 18
Upper Big Creek ....................................................................................... 20
South Fork Salmon River.......................................................................... 22
Secesh River and Lake Creek ................................................................... 22
Recaptures at Traps and Dams .............................................................................. 24
Detection at Dams ................................................................................................. 27
Parr-to-Smolt Survival Estimates ............................................................. 27
Relationships with Length ........................................................................ 29
Migration Timing .................................................................................................. 31
Lower Granite Dam .................................................................................. 31
Comparison with River Flows .................................................................. 35
Environmental Information ................................................................................... 36
DISCUSSION ................................................................................................................... 37
ACKNOWLEDGMENTS ................................................................................................ 40
REFERENCES ................................................................................................................. 42
APPENDIX: Data Tables and Figures ............................................................................. 46
INTRODUCTION
This report provides information on wild Chinook salmon parr that we PIT tagged
in Idaho in 2010 and subsequently monitored, along with PIT-tagged fish from Oregon.
We report estimated survival and timing of these Chinook salmon juveniles to Lower
Granite Dam as well as interrogation data at several other sites throughout the Snake and
Columbia River system. This research continues studies that began under Bonneville
Power Administration (BPA) funding in 1991. Results from previous study years were
reported by Achord et al. (1994-1995a,b; 1996a; 1997-1998; 2000-2001a,b; 2002-2011).
The goals of this ongoing study are to:
1) Characterize the migration timing and estimate parr-to-smolt survival of different
populations of wild Snake River spring/summer Chinook salmon at Lower Granite
Dam
2) Determine whether consistent migration patterns are apparent
3) Determine which environmental factors influence these patterns
4) Characterize the migrational behavior and estimate survival of different wild
juvenile fish populations as they migrate from their natal rearing areas.
This study provides critical information for recovery planning, and ultimately
recovery for these wild fish populations, which are listed as threatened under the U.S.
Endangered Species Act.
During 2010-2011, we collected water temperature, dissolved oxygen, specific
conductance, water depth, and pH data at six monitoring stations, in the Salmon River
Basin, Idaho, for the Baseline Environmental Monitoring Program. In addition, we
measured hourly water temperature and depth parameters in 10 additional streams. These
environmental data can be compared with parr/smolt migration, survival, and timing data
to discern patterns or characteristic relationships that may exist and that may help in
recovery planning for threatened populations.
2
3
METHODS
Fish Collection and Tagging
The Oregon Department of Fish and Wildlife (ODFW) PIT tagged wild Chinook
salmon parr in the Grande Ronde and Imnaha River drainages in northeast Oregon in
2010. All tagging, detection, and timing information for fish from these streams in
2010-2011 will be reported by ODFW. However, with ODFW's concurrence, we report
here the timing and overall estimated survival to Lower Granite Dam of fish tagged in
summer from these Oregon streams.
National Marine Fisheries Service (NMFS) personnel tagged fish in Idaho streams
during 2010 (Figure 1). Fish were collected and tagged using safe handling methods
developed for this study; these methods are detailed in Matthews et al. (1990; 1997) and
in previous reports from this study (Achord et al. 1994; 1995a; b; 2003; 2004; 2010).
However, in 2010 fish were tagged using individual single-use hypodermic needles that
were pre-loaded with tags. This new system uses a specially designed tagging gun-style
injector for rapid insertion of tags and disposal of each needle. This system ensured that
each fish was tagged with a sterile, sharp needle, thus subjecting the fish to less stress and
injury during the tagging process.
Instream PIT-Tag Monitors
Until recently, opportunities to monitor the migration of PIT-tagged wild juvenile
fish were limited to instream or inriver traps, the juvenile fish bypass systems at dams,
and a PIT-tag detection trawl system operated in the upper Columbia River estuary. In an
effort to detect fish closer to their natal rearing sites, we began development of instream
PIT-tag monitoring systems. We placed the first instream detection systems at two sites
in Valley Creek during 2002, and development and improvement of these systems has
continued since then. More recent development of these systems is discussed below;
further detail can be found in Achord et al. (2004; 2005; 2009; 2010; 2011). Briefly, both
systems were set up to automatically interrogate, store, and transmit data to the Columbia
River PIT-Tag Information System (PTAGIS), a regional shared database operated by the
Pacific States Marine Fisheries Commission (PSMFC 1996).
4
Figure 1. Wild spring/summer Chinook salmon parr were PIT tagged during 2010 in the
following streams or sample areas:
1-Bear Valley Creek
9-Herd Creek
2-Elk Creek
10-Big Creek (upper)
3-Sulphur Creek
11-Big Creek (lower) and Trap
4-Marsh Creek
12-Chamberlain and WF Chamberlain Cr
5-Cape Horn Creek
13-South Fork Salmon River
6-Valley Creek
14-Secesh River
7-Loon Creek
15-Lake Creek
8-Camas Creek
Juvenile migrant fish traps shown above are as follows:
A-Lake Creek Trap
F-Sawtooth Trap
B-Secesh River Trap
G-East Fork Salmon River Trap
C-South Fork Salmon River Trap
H-Salmon River Trap
D-Lower Secesh River Trap
I-Snake River Trap
E-Marsh Creek Trap
5
In summer 2007, NMFS transitioned from using the 12-mm TX1411ST PIT tag to
the new 12-mm TX1411SST tag. The main reason for this change was the extended
detection range (maximum about 43 cm) of the SST tag compared to the ST tag
(maximum range about 20 cm). From 1 August 2007 through the first week of
September 2007, a single instream antenna was operated at each Valley Creek site.
Starting the second week of September 2007, multiplex transceivers were installed,
allowing two antennas to operate at each Valley Creek site.
These antennas were constructed of 12.7-mm polyethylene (60-cm base × 3-m
long × 17-cm high) and placed end-to-end (with a gap in-between). One of the antennas
at the upstream Valley Creek site failed after about 2 months of operation and was not
replaced until mid-2008. In addition, as development of this system continued
throughout 2007-2008; the monitoring systems operated intermittently.
In summer 2008, four specially designed rectangular antennas were staked to the
substrate with duck-billed anchors at the upper Valley Creek monitoring site (VC1). The
new antennas were constructed from 10.2-cm (4 inch) diameter schedule-80 PVC pipe.
Each antenna was rectangular (3 m long × 0.8 m wide) with two supporting
cross-members. Two of these antennas were also installed at the lower Valley Creek
monitoring site (VC2) for a total of three antennas at this site (two new antennas placed
end-to-end and one 60-cm-wide antenna placed 2 m below them). Both monitoring
systems have operated throughout the annual monitoring periods with few problems.
In summer 2010, six new rectangular antennas were staked to the substrate with
duck-billed anchors at the lower Valley Creek monitoring site (VC2). These antennas
had the same materials and design as the antennas added in 2008, but were longer
(6 m long × 0.8 m wide). Both arrays at the lower Valley Creek site now consist of three
~20-ft antennas placed parallel to each other at approximately 5 m apart; thus, both arrays
cover the entire stream width. The antennas and configuration for the upper Valley
Creek site (VC1) remained the same in 2010-2011 as in 2008.
With the development of PVC-pipe antennas and the new anchoring systems, we
decided to install three of these rectangular antennas at Big Creek. Upper (TAY-a) and
lower (TAY-b) monitoring systems were installed at lower Big Creek in summer 2008,
and remained in place through spring. An additional antenna was installed at the lower
monitoring site. The three PVC-pipe antennas installed at this site were washed out
during high flows in mid-May 2009, and the remaining antenna flooded at this site about
the same time. However, the duck-billed anchors held, and we discovered that stronger
straps were needed for attaching antennas to the stakes. All three lost antennas were
recovered intact. Despite these problems, both systems operated well through mid-spring
2009. These systems also operated well from late summer 2009 to late spring 2010,
6
when the cables became dislodged from antennas at both sites. Improvements to these
two monitoring sites continued from 2010 through 2011.
In 2009-2010, we began monitoring summer-tagged wild fish at three monitoring
sites in the South Fork of the Salmon River drainage developed by the Integrated Status
and Effectiveness Monitoring Program (ISEMP project 2003-017-00). These sites were
in the lower Secesh River near Zena Creek Ranch (rkm 5), in the lower South Fork
Salmon River at Guard Station Road Bridge (rkm 30), and in the South Fork Salmon
River near Krassel Creek (rkm 65). These three sites monitored tagged fish from the
Secesh and South Fork Salmon Rivers and Lake Creek.
Detection data from wild PIT-tagged Chinook salmon juveniles were collected
from five instream detection system sites: Valley Creek, Big Creek, South Fork Salmon
River (Krassel), lower South Fork Salmon River (Guard Station Road Bridge), and lower
Secesh River from late July 2010 through June 2011.
Juvenile Migrant Traps
Some fish PIT tagged as parr in natal rearing areas were subsequently collected at
migrant traps (Figure 1). During fall 2010 and spring 2011, juvenile migrant fish traps
were operated at Knox Bridge on the South Fork of the Salmon River, South Fork
Salmon River below the mouth of the Secesh River, on Lake Creek, on the Secesh River
near Chinook Campground and near the stream mouth, on Marsh Creek, in lower Big
Creek at Taylor Ranch, and near the Sawtooth Hatchery on the upper Salmon River.
Also during spring 2011, juvenile migrant fish traps were operated in Idaho on the
lower Salmon River near Whitebird and on the Snake River at Lewiston. Traps were
operated by the Nez Perce Tribe and the Idaho Department of Fish and Game (IDFG).
Generally, fish at these traps were anesthetized, scanned for PIT tags, and then measured
for length and weight. Some of these fish were also PIT tagged at the traps. Upon
recovery from the anesthetic, all fish were released back to the streams or rivers.
7
Recaptures at Dams
Since 2001, we have recaptured our study fish at Little Goose Dam to collect
information on growth during the parr-to-smolt stage. Recapture is accomplished by
programming the PIT-tag separation-by-code (SbyC) system to divert wild tagged fish
from the population passing Little Goose Dam (Downing et al. 2001).
In 2011, we continued this effort, and the SbyC system was programmed to
separate up to a maximum of 100 wild fish from each stream. All recaptured fish were
handled using water-to-water transfers and other best handling practices. After handling,
all tagged and untagged fish were returned to the river via the bypass system.
In addition to length (mm) and weight (g) measurements on these wild smolts at
Little Goose Dam, a Fulton-type condition factor (CF) was calculated as:
𝐶𝐹 =weight (g)
length (mm)3 × 105
Condition factor was calculated for these fish both at release (using release data
associated with the PIT tag code) and recapture.
Interrogation Systems at Snake and Lower Columbia River Dams
During spring and summer 2011, wild Chinook salmon smolts that had been
PIT-tagged as parr in 2010 began volitional migration downstream. Of the eight dams
encountered by these smolts on the lower Snake and Columbia Rivers, seven were
equipped with smolt collection and/or PIT-tag interrogation systems. These were Lower
Granite, Little Goose, Lower Monumental, and Ice Harbor Dam on the Snake River, and
McNary, John Day, and Bonneville Dam on the Columbia River.
At these seven dams, all smolts guided from turbine intakes into juvenile bypass
systems were electronically monitored for PIT tags by interrogation systems similar to
those described by Prentice et al. (1990). Dates and times to the nearest second were
automatically recorded as PIT-tagged fish passed each detector. Detection data were
transferred to PTAGIS, a regional database, at designated intervals each day. Tagged fish
were also monitored using a surface pair-trawl fitted with a PIT-tag detection antenna and
operated in the upper Columbia River estuary ~150 km downstream from Bonneville
Dam (Ledgerwood et al. 2004).
8
Data Analyses
Probability Estimates of Detection and Survival
For the PIT-tagged release groups from each stream population, we estimated
survival probabilities from release as parr to arrival at Lower Granite Dam as smolts as
well as detection probabilities at the dam. For streams with instream monitors, this
migration corridor was divided into two smaller segments: 1) a stream segment, which
spanned from the point of release to the lower instream monitor, and 2) a river segment,
which spanned from the lower instream monitor to the dam.
Stream segment—For estimates of parr-to-smolt survival in each stream segment,
we constructed a detection history for each fish that included detection or non-detection
at 1) one or both of the upper and lower instream monitors and/or 2) any downstream
dam. This produced four possible detection histories. Counts of fish with each detection
history were fitted to a multinomial model, with cell probabilities parameterized as
functions of detection and survival probability. The model was the Cormack-Jolly-Seber
(CJS) single-release model with multiple recapture (Cormack 1964; Jolly 1965; Seber
1965). The CJS model is used extensively for estimates of survival of PIT-tagged fish in
the Columbia River basin.
Because there were two monitor sites at the Valley Creek and Lower Big Creek
locations, it would have been possible to use information from just those sites to estimate
detection and survival probabilities using a method similar to that described by Connolly
et al. (2008). However, evidence from past detection data showed that detection at an
upper instream monitor was not independent of detection at a lower monitor, violating a
critical assumption required by the CJS model. An additional untestable assumption of
100% survival between the upper and lower instream monitors would have allowed us to
model the dependency between these detection probabilities; however, sample size in
many cases was not sufficient to obtain useful estimates from this model. Therefore, we
chose the CJS method described above.
River segment—For the river segment, we estimated survival from release to
Lower Granite Dam for all streams. For segments with instream monitors, we also
estimated survival from the downstream monitor to Lower Granite Dam. Through the
use of auxiliary data (see below), we estimated separate probabilities of survival for each
stream overall or each of the three periods when fish were detected by instream monitors:
late summer and fall (August-October), winter (November-February), and spring
(March-June). For instream monitor estimates, we first grouped detected fish by seasonal
period of detection. Then, for each cohort (overall release or instream seasonal groups),
we compiled a temporal distribution of detections at Lower Granite Dam (i.e., a daily
count of the number of fish from each period detected at the dam on each day).
9
Each daily count at the dam was then divided by the estimated probability of
detection at Lower Granite Dam on that day (see below) to derive an estimate of the total
number of fish from each cohort that passed Lower Granite Dam on that day. Daily
passage estimates were then summed to give an estimate of the total number of fish from
each cohort that survived to Lower Granite Dam. For each stream, this total was divided
by the total number of fish released in that stream to derive an estimate of survival to
Lower Granite Dam. For streams with monitors, the total that were detected at the upper
and lower instream monitors during each seasonal period and survived to Lower Granite
was also divided by the total number detected at the monitors during each seasonal period
to derive estimates of survival to Lower Granite Dam by season. For streams with
monitors, we also estimated an overall parr-to-smolt survival rate to Lower Granite Dam
by calculating the weighted average of the three seasonal survival estimates, where each
season was weighted according to the proportion of total detections that occurred during
that season.
Daily detection probabilities at Lower Granite Dam were estimated as shown in
the steps below using auxiliary data with the method of Schaefer (1951) modified by
Sandford and Smith (2002). The auxiliary data were for all wild Chinook salmon tagged
and released in the Snake River Basin upstream from the dam. For each day of the
migration season, we estimated numbers of all wild Chinook salmon PIT-tagged and
released upstream from Lower Granite Dam that passed the dam detected or undetected.
Thus a series of daily probabilities of detection was developed as follows:
1) Fish detected on day i at Little Goose Dam that had previously been detected at
Lower Granite Dam were tabulated according to day of passage at Lower Granite
Dam.
2) Fish detected on day i at Little Goose Dam that had not previously been detected at
Lower Granite Dam were assigned to an estimated day of passage at Lower Granite
Dam, assuming that their passage distribution at Lower Granite Dam was
proportionate to that of detected fish.
3) This process was repeated for all days with detections at Little Goose Dam.
4) Detected and non-detected fish passing Lower Granite Dam on day i were summed.
5) Detection probability on day i was estimated by dividing the number of fish
detected at Lower Granite Dam on day i by the sum of detected and (estimated)
non-detected fish passing that day.
We modified the method slightly (see Sandford and Smith 2002) for estimates in
the tails of the passage distribution where the above process was not applicable (e.g., for
days when no detections occurred at Little Goose Dam).
10
Bootstrap methods were used to derive standard errors for the estimated
probability of survival for each stream from both release and instream monitors to Lower
Granite Dam (Achord et al. 2007b). Auxiliary data were used to derive bootstrap
distributions of daily detection probability estimates. Lower Granite Dam detection data
for each release or instream monitor group were used for bootstrap distributions of
passage at Lower Granite Dam.
Migration Timing
For each stream, we monitored within-season migration timing at Lower Granite
Dam based on daily detection numbers at the dam of all wild PIT-tagged Chinook smolts.
Streams where wild parr were tagged for this study varied in temperature, elevation,
mean flow, and population size. Therefore, to compare arrival timing at Lower Granite
Dam between streams, we used an approach analogous to analysis of variance with
multiple comparisons.
First, detections at Lower Granite Dam were expanded (i.e., weighted) by
dividing daily detection totals by the daily detection probability estimates obtained above.
Next, migration timing statistics (i.e., passage dates of the 10th, median, and 90th
percentiles of the tagged population from each stream) were calculated based on these
expanded detections. The bootstrap method of Efron and Tibshirani (1993) was used to
calculate estimates of standard errors (SEs) for each migration timing statistic. Then, a
“representative” estimate of variance for each statistic was calculated as the median of
the SEs for fish from all 18 stream populations. This method assumed that the timing of
passage percentiles had similar distributions among streams. The
Student-Newman- Keuls (SNK) multiple comparison method was used to compare each
statistic between streams (α = 0.05; Petersen 1985).
We also examined arrival timing at Lower Granite Dam of individual populations
over a period of years to determine similarities or differences between years and between
populations. Comparisons of the 10th, 50th, and 90th percentile passage dates were made
among 19 streams or sample areas using a two-factor analysis of variance (ANOVA).
Year was considered a random factor, and stream a fixed factor. Residuals were visually
examined to assess normality. Treatment means were compared using Fisher’s least
significant difference procedure (Peterson 1985), with α = 0.05.
11
Environmental Information
In 2010-2011, we also collected hourly measurements of water temperature (°C),
dissolved oxygen (ppm), specific conductance (µS/cm), water depth (ft), and pH from the
following six locations: Marsh Creek, Valley Creek, Sawtooth Hatchery in the upper
Salmon River, South Fork of the Salmon River (Knox Bridge), Secesh River, and Big
Creek (lower) at Taylor Ranch. All environmental monitoring systems except the system
at Valley Creek were close to juvenile migrant fish traps. The water quality monitor at
Valley Creek was located near our instream PIT-tag monitoring system (VC2). In
2010-2011, we also collected hourly water temperatures and depths in Bear Valley/Elk
Creek and in Sulphur, Chamberlain, West Fork Chamberlain, upper Big, Cape Horn,
Herd, Loon, Camas, and Lake Creeks.
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RESULTS
Fish Collection and Tagging
From 20 July to 3 September 2010, we collected 18,163 wild Chinook salmon
parr from 16 Idaho stream populations (Figure 1). These populations were sampled over
a distance of about 47.2 stream km and an area of approximately 419,507 m2 (Table 1;
Appendix Table 1). Of the fish collected, 15,210 were PIT tagged and released back into
the streams along with the remaining untagged live fish. Collected fish were rejected for
tagging if they had been previously tagged, were too small or injured, had matured
precociously, or if sufficient numbers of fish had already been tagged. Numbers of
tagged fish released per stream or sample area ranged from 141 in Cape Horn Creek to
2,513 in Valley Creek (Table 1; Appendix Tables 1-2a).
Table 1. Summary of collection, PIT tagging, and release of wild Chinook salmon parr
with average fork lengths and weights (includes recaptured tagged fish),
approximate distances, and estimated areas sampled in streams of Idaho from
July to September 2010.
Number of fish
Average length
(mm)
Average weight (g)
Distance:
collection
Estimated
area
Tagging location
Collected
Tagged &
released
Collected
Tagged
Collected
Tagged
area to
stream
mouth (km)
sampled in
streams
(m2)
Bear Valley Cr
1,195
1,004
60.7
61.9
3.1
3.1
8-11, 13-14.6
34,816
Elk Creek
1,098
1,025
64.3
63.6
3.8
3.4
0-4
34,116
Marsh Creek
1,221
1,030
62.9
64.1
3.8
3.6
11.5-15
36,959
Cape Horn Creek
396
141
53.6
59.5
3.4
2.7
1-2
7,991
Sulphur Creek
694
671
68.8
68.0
4.5
4.2
5-9
29,100
Valley Creek
2,938
2,513
62.7
63.9
3.4
3.4
4, 7, 11-13
50,379
Loon Creek
874
828
66.2
66.7
3.8
3.9
29-32.5
27,961
Camas Creek
562
506
62.6
63.4
3.3
3.3
21-22.5
14,813
Big Cr (upper)
1,918
1,145
58.6
62.5
3.2
3.0
56-60
35,278
Big Cr (lower)
1,488
1,413
76.2
76.2
5.5
5.5
8-11.4
39,058
Herd Creek
1,092
1,017
68.4
68.1
4.6
4.4
1-3.5
16,612
WF Chamberlain Cr
791
727
64.4
65.3
3.4
3.4
1-2
1,100
Chamberlain Cr
976
697
59.5
62.4
3.4
3.3
24-26
16,265
S Fork Salmon R
1,052
1,034
69.8
69.7
4.4
4.3
117-120
24,693
Secesh River
1,243
1,001
62.7
64.4
3.4
3.4
24-27
33,803
Lake Creek
625
458
58.8
61.1
3.1
3.1
1-3
16,563
Totals or averages
18,163
15,210
63.8
65.0
3.8
3.6
47.2
419,507
14
In 2010, the mean fork length of all Chinook salmon parr collected was 63.8 mm
and the mean weight was 3.8 g. The mean fork length of Chinook salmon parr that were
tagged and released was 65.0 mm, and the mean weight was 3.6 g (Table 1; Appendix
Table 1). Collection areas within streams were further delineated by recording Global
Positioning System coordinates using Universal Transverse Mercator grid (Appendix
Table 2b).
Other than Chinook salmon parr, sculpin was the most abundant fish observed
during collection operations (Table 2). However, records of non-target fish do not
represent their total abundances in the collection areas, as we targeted Chinook salmon
for collection, not other coincident species.
Mortality associated with collection and tagging procedures was low (Table 3;
Appendix Table 3). Overall, collection mortality was 1.0%, tagging and 24-h delayed
mortality was 0.5%, and observed mortality was 1.4%. In addition, 11 lost tags (0.07%)
were observed during field work in 2010.
Table 2. Summary of species other than Chinook salmon parr observed during collection
operations in Idaho from July to September 2010. Numbers of steelhead in
parentheses were PIT tagged for the Idaho Department of Fish and Game.
Streams
Steelhead
Tagged
Steelhead
Unidentified
Fry
Brook
trout
Cutthroat
trout
Bull Trout
Bear Valley Creek
212
(0)
312
580
0
0
Elk Creek
131
(0)
121
323
0
2
Marsh Creek
111
(0)
133
586
0
0
Cape Horn Creek
32
(0)
6
26
0
7
Sulphur Creek
126
(0)
280
0
6
0
Valley Creek
336
(0)
1,127
270
0
1
Loon Creek
271
(0)
1,131
0
0
3
Camas Creek
76
(0)
1,163
0
0
2
Big Creek (upper)
437
(127)
261
342
1 (1)
23
Big Creek (lower)
510
(119)
1,091
0
0
2
Herd Creek
139
(0)
549
0
0
4
West Fork Chamberlain Cr
48
(0)
49
0
0
3
Chamberlain Cr
216
(0)
399
1
0
3
S Fork Salmon River
466
(0)
378
19
0
6
Secesh River
149
(0)
332
23
0
9
Lake Creek
17
(0)
60
31
0
12
Totals
3,277
(246)
7,392
2,201
7 (1)
77
15
Table 2. Continued.
Streams
Sculpin
Dace
Sucker
Whitefish
Shiner
Bear Valley Creek
1,210
24
179
67
0
Elk Creek
1,232
18
178
197
0
Marsh Creek
1,418
0
1
11
0
Cape Horn Creek
231
0
0
0
0
Sulphur Creek
2,098
0
3
17
0
Valley Creek
1,009
85
23
43
11
Loon Creek
495
0
0
8
0
Camas Creek
0
0
0
7
0
Big Creek (upper)
2,843
0
0
1
0
Big Creek (lower)
346
87
11
17
0
Herd Creek
291
0
0
19
0
West Fork Chamberlain Cr
16
0
0
7
0
Chamberlain Cr
555
0
0
9
0
S. F. Salmon River
36
57
0
1
0
Secesh River
651
47
0
5
0
Lake Creek
341
4
0
3
0
Totals
12,772
322
395
412
11
Table 3. Mortality percentages for wild Chinook salmon parr collected and PIT-tagged in
Idaho from July to September 2010. There were 11 lost tags for the study.
Mortality %
Tagging location
Collection
Tagging and post
tagging (24-h)
Overall
Bear Valley Creek
0.5
0.3
0.8
Elk Creek
0.7
0.6
1.3
Marsh Creek
0.7
0.5
1.1
Cape Horn Creek
1.0
0.7
1.3
Sulphur Creek
0.7
0.1
0.9
Valley Creek
1.2
0.04
1.2
Loon Creek
0.5
1.0
1.4
Camas Creek
2.1
0
2.1
Big Creek (upper)
1.7
3.8
4.0
Big Creek (lower)
2.0
0
2.0
Herd Creek
2.3
0.1
2.4
West Fork Chamberlain Creek
0
0
0.0
Chamberlain Creek
0.3
0
0.3
South Fork Salmon River
0.4
0
0.4
Secesh River
0.8
0
0.8
Lake Creek
0.8
0
0.8
Averages
1.05
0.5
1.44
16
-2
2
6
10
14
18
22
26
30
34
38
42
46
50
54
58
62
Number detected
Detection date at VC1 or VC2
Valley Creek
(n = 764)
Detections at Instream PIT-Tag Monitors
Valley Creek
From 2 to 4 August 2010, 2,513 wild Chinook salmon parr were collected, PIT
tagged, and released in natal rearing areas 3-10 km above the upper instream monitor in
lower Valley Creek (VC1; Table 1). Between 2 August 2010 and 30 June 2011, the
10 instream antennas comprising the two Valley Creek sites detected 764 of these fish at
least once (Figure 2). Median downstream travel time between the upstream and
downstream Valley Creek monitors was approximately 15.6 h (range 37 min-107 d) for
the 319 fish detected at both sites. Of the 764 detections, 458 (59.9%) occurred during
late summer/fall (Aug-Oct); 249 (32.6%) in winter (Nov-Feb); and 57 (7.5%) in spring
(Mar-Jun; Figure 2).
Figure 2. Detections of 764 PIT-tagged wild spring/summer Chinook salmon parr,
pre-smolts, and smolts at the upper (VC1) and lower (VC2) in-stream PIT-tag
monitoring antennas in lower Valley Creek from August 2010 through June
2011. A total of 2,513 Chinook salmon parr were PIT tagged and released in
areas from 3 to 10 kilometers above these antennas from 2 to 4 August 2010.
17
50
55
60
65
70
75
80
85
90
95
100
Length at Tagging (mm)
Date at VC1 or VC2
Valley Creek
length Median Length
Based on detections at downstream dams, the overall efficiency of Valley Creek
monitors in detecting these fish was 75.9%. Based on this efficiency, an estimated 40.1%
(SE = 1.8%; 95% CI 36.4-43.7%) of all summer-tagged parr survived to migrate past the
Valley Creek monitors. Their survival from the Valley Creek monitors to Lower Granite
Dam was 22.8% (SE = 2.8%; 95% CI 17.6-28.7%). For fish detected from August 2010
to June 2011, we found no significant relationship between timing of detection in lower
Valley Creek and fork length at tagging (P = 0.451; Figure 3).
Figure 3. Fork length and median fork length of 764 summer-tagged parr from migration
year 2011 that were detected at the upper and lower in-stream PIT-tag
monitoring antennas in lower Valley Creek from August 2010 through June
2011.
18
Lower Big Creek
From 2 to 3 September 2010, 1,413 wild Chinook salmon parr from lower Big
Creek were collected, PIT tagged, and released in natal rearing areas 0-3 km above the
instream PIT-tag monitors in lower Big Creek at Taylor Ranch (Table 1). Between
2 August 2010 and 30 June 2011, 244 of these fish were detected at least once on the
upper and lower Taylor Ranch monitors combined (TAY-a, TAY-b; Figure 4). Of these
244 detections, 179 (73.4%) occurred in late summer/fall (Aug-Oct); 50 (20.5%) in
winter (Nov-Feb); and 6 (6.1%) in spring (Mar-Jun; Figure 4).
Figure 4. Detections of 244 PIT-tagged wild spring/summer Chinook salmon parr,
pre-smolts, and smolts from lower Big Creek at the upper (TAY-a) and lower
(TAY-b) in-stream PIT-tag monitoring antennas at Taylor Ranch in lower Big
Creek from September 2010 through June 2011. A total of 1,413 Chinook
salmon parr were PIT tagged and released in areas from 0 to 3 kilometers
above these antennas from 2 to 3 September 2010.
0
5
10
15
20
25
30
35
40
2-Sep-10
16-Sep-10
30-Sep-10
14-Oct-10
28-Oct-10
11-Nov-10
25-Nov-10
9-Dec-10
23-Dec-10
6-Jan-11
20-Jan-11
3-Feb-11
17-Feb-11
3-Mar-11
17-Mar-11
31-Mar-11
14-Apr-11
28-Apr-11
12-May-11
26-May-11
9-Jun-11
Number Detected
Big Creek (lower)
n = 244
19
50
55
60
65
70
75
80
85
90
95
100
Length at Tagging (mm)
Big Creek (lower)
length Median Length
Based on detections at downstream dams, the overall detection efficiency of the
upstream and downstream monitors at lower Big Creek was 20.1%. Using this detection
efficiency rate, we estimated that 86.0% (SE 9.0%, 95% CI 68.1-104%) of all
summer-tagged parr from this stream (area) survived to migrate past the monitors at
lower Big Creek, and their survival from the monitors to Lower Granite Dam was 26.7%
(SE = 4.9%; 95% CI 17-35.9%). Detection data collected from September 2010 to June
2011 indicated a statistically significant relationship between fork length at tagging and
timing of detection in lower Big Creek (P = 0.031; Figure 5).
Figure 5. Length at tagging (FL) and median fork length of 244 summer-tagged parr
from lower Big Creek that were detected at Taylor Ranch upper and lower
in-stream PIT-tag monitoring antennas, September 2010-June 2011.
20
Upper Big Creek
From 16 to 17 August 2010, 1,145 wild Chinook salmon parr from upper Big
Creek were collected, PIT tagged, and released in natal rearing areas 49-52 km upstream
from the Taylor Ranch instream monitors in lower Big Creek (Table 1). Between August
2010 and June 2011, the upper and lower monitoring sites had 46 unique detections of
these fish (Figure 6). Of these 46 detections, 36 (78.3%) occurred in late summer/fall,
6 (13.0%) in winter, and 4 (8.7%) in spring (Figure 6).
Figure 6. Detections of 46 PIT-tagged wild spring/summer Chinook salmon parr,
pre-smolts, and smolts from upper Big Creek at the upper (TAY-a) and lower
(TAY-b) in-stream PIT-tag monitoring antennas at Taylor Ranch in lower Big
Creek from September 2010 through June 2011. A total of 1,145 Chinook
salmon parr were PIT tagged and released in areas 49-52 kilometers above
these antennas from 16 to 17 August 2010.
0
1
2
3
Number Detected
Big Creek (upper)
n = 46
21
Based on detections at downstream dams, the overall efficiency of the upper or
lower instream monitors at Taylor Ranch in lower Big Creek in detecting these fish was
8.8%. Based on this efficiency, an estimated 45.8% (SE = 12.3%, 95% CI 21.1-70.5%)
of all summer-tagged parr survived to migrate past the downstream monitors, and their
survival from the downstream monitors to Lower Granite Dam was 28.6% (SE = 10.8%,
95% CI 9.4-50.7%). Detection data collected from August 2010 to June 2011 indicated a
statistically significant relationship between fork length at tagging in upper and lower Big
Creek and timing of detection on the upper and lower monitors (TAY-a and TAY-b,
respectively) at Taylor Ranch (P = 0.031; Figures 5 and 7).
Figure 7. Length at tagging (FL) and median fork length of 46 summer-tagged parr from
upper Big Creek that were detected at Taylor Ranch upper and lower in-stream
PIT-tag monitoring antennas, August 2010-June 2011.
50
55
60
65
70
75
80
85
90
95
100
Length at Tagging (mm)
Big Creek (upper)
length Median Length
22
South Fork Salmon River
From 19 to 20 August 2010, 1,034 wild Chinook salmon parr from the South Fork
Salmon River were collected, PIT tagged, and released in natal rearing areas (Table 1).
These fish were released 52-53 km above the instream monitor near Krassel Creek (rkm
65) and 87-88 km above the monitor in the lower South Fork Salmon River at Guard
Station Road Bridge (rkm 30). From August 2010 to June 2011, only 11 of these fish
were detected at the South Fork Salmon River monitor near Krassel Creek, and only 4
were detected at the site near Guard Station Road Bridge. Because the efficiency of the
Krassel monitoring site for detecting tagged fish plummeted to 1-2% for 2010-2011,
compared to 52.7% in 2009-2010, no further estimates based on these detections are
made downstream. However, the overall parr-to-smolt estimated survival from this
stream to Lower Granite Dam is 20.1% for 2010-2011 (see Table 5).
Secesh River and Lake Creek
From 27 to 30 August 2010, 1,459 wild Chinook salmon parr from the Secesh
River and Lake Creek were collected, PIT tagged, and released in or near their natal
rearing areas (Table 1). Release sites were 21-42 km above the instream PIT-tag
monitors near Zena Creek Ranch, and ~55-76 km above the South Fork Salmon River
monitoring site at Guard Station Road Bridge. From August 2010 to June 2011, 247 of
these fish were detected at the lower Secesh River site near Zena Creek Ranch (Figure 8),
but only 4 were detected at the lower South Fork Salmon River near Guard Station Road
Bridge. Of the 247 detections near Zena Creek, 204 (82.6%) occurred in late
summer/fall, 35 (14.2%) in winter, and 8 (3.2%) in spring (Figure 8). An estimated
48.8% (SE = 4.5%, 95% CI 39.8-57.9%) of all summer-tagged parr from these streams
survived to migrate passed these monitors, and their subsequent survival to Lower
Granite Dam was 36.0% (SE = 5.6%, 95% CI 25.5-47.6%). For fish detected from
August 2010 to June 2011, we found a significant relationship between timing of
detection in the lower Secesh River and fork length at tagging (P < 0.001; Figure 9).
23
0
2
4
6
8
10
12
14
16
18
20
Number Detected
Lake Creek or Secesh River
(n = 247)
Figure 8. Detections of 247 PIT-tagged wild spring/summer Chinook salmon parr,
pre-smolts, and smolts from the Secesh River or Lake Creek at the Zena Creek
Ranch in-stream PIT-tag monitoring antennas in lower Secesh River from
August 2010 through June 2011. A total of 1,459 Chinook salmon parr were
PIT tagged and released in areas from (approximately) 21 to 42 kilometers
above these antennas from 27 to 30 August 2010.
24
Figure 9. Length at tagging (FL) and median fork length of 247 summer-tagged parr
from the Secesh River and Lake Creek that were detected at the in-stream
PIT-tag monitoring site in the lower Secesh River near Zena Creek, August
2010-June 2011.
Recaptures at Traps and Dams
A total of 1,013 wild fish PIT-tagged in summer 2010 were recaptured at traps
above Lower Granite Dam from summer-fall 2010 to spring 2011, and 463 were
recaptured in the separation-by-code system at the Little Goose Dam juvenile fish facility
(Table 4). Overall parr-to-smolt growth measured at Little Goose Dam indicated a mean
growth rate of 0.15 mm/d and mean weight gain of 0.033 g/d.
50
55
60
65
70
75
80
85
90
95
100
Length at Tagging (mm)
Lake Creek or Secesh River
length Median Length
25
Table 4. Length, weight, and condition of wild spring/summer Chinook salmon PIT-tagged in Idaho during summer 2010 and
recaptured either in the separation-by-code system at Little Goose Dam (2011) or at traps during summer-fall 2010
and spring-summer 2011. Condition factor and weight gain could be calculated only for fish that had been weighed
at tagging. No fish were recaptured at dams other than Little Goose.
Recaptured fish
Weight and condition factor (CF)
Days to recapture
Length gain (mm)
Weight gain (g)
Mean CF
n
range
mean
n
range
Mean
n
range
Mean
release
recapture
Wild spring/summer Chinook salmon recaptured at Little Goose Dam
Bear Valley Creek
26
290-330
301
26
31-75
47.2
23
5-20
10.4
1.33
1.02
Elk Creek
41
280-339
298
41
25-61
42.6
33
5-16
8.8
1.3
1.03
Sulphur Creek
19
281-312
287
19
32-51
39.9
19
6-14
8.8
1.33
1.03
Marsh Creek
43
277-323
293
43
28-62
43.6
30
5-16
9.9
1.32
1.07
Valley Creek
39
275-324
290
39
34-59
45.3
31
5-15
10.9
1.26
1.04
Loon Creek
40
266-299
277
40
23-57
39.8
38
6-16
9.2
1.25
1.07
Camas Creek
30
273-311
286
30
25-62
42
28
5-18
9
1.29
1.02
Big Creek (upper)
30
265-314
275
30
25-55
42.6
21
4-15
9.8
1.32
1.08
Big Creek (lower)
63
245-284
254
61
24-60
36.3
20
6-10
8.5
1.12
1
South Fork Salmon R.
26
259-293
268
24
20-50
36.9
24
4-14
8.8
1.29
1.04
West Fork Chamberlain Cr
21
255-307
267
20
27-58
43
14
6-14
10
1.15
1.02
Chamberlain Creek
22
247-287
261
22
25-62
47
14
5-20
10.8
1.3
1.05
Secesh River
19
253-291
263
19
20-63
43.7
12
4-17
8.8
1.21
1.02
Lake Creek
8
253-301
267
8
16-54
41.5
4
6-12
9.1
1.22
1.05
Herd Creek
35
271-307
279
35
26-75
41.8
23
6-25
9.7
1.28
1.04
Cape Horn Creek
1
N/A
289
1
N/A
25
1
N/A
3
1.67
1.04
Totals or averages
463
245-339
278
458
16-75
41.1
335
4-25
9.1
1.29
1.04
Wild spring/summer Chinook salmon recaptured at traps
Upper Big Creek (Taylor)
summer-fall 2010
92
15-87
50
91
-2-20
6.2
67
-1-4
0.6
1.26
1.1
Spring
3
229-249
242
3
15-26
20.3
1
N/A
2.4
1
1.06
Lower Big Creek (Taylor)
summer-fall 2010
116
1-67
8
116
-7-10
-1.6
38
-2-3
-0.2
1.16
1.15
26
Table 4. Continued.
Recaptured fish
Weight and condition factor (CF)
Days to recapture
Length gain (mm)
Weight gain (g)
Mean CF
n
range
mean
n
range
Mean
n
range
Mean
release
Recapture
Wild spring/summer Chinook salmon recaptured at traps (continued)
SF Salmon River (Knox)
summer-fall 2010
205
1-65
21
201
-4-16
3.5
157
-2-4
0.2
1.24
1.12
spring 2011
5
212-251
234
5
17-26
21.8
3
4-5
4.1
1.26
1.04
Lake Creek
summer-fall 2010
72
1-56
30
63
-2-14
4.6
29
-2-2
0.1
1.42
1.13
spring 2011
3
215-255
240
3
14-20
16.3
2
0-3
1.8
1.27
1.09
SF Salmon River (lower)
summer-fall 2010
42
25-89
65
40
4-20
10.1
30
0-3
1
1.31
1.08
spring 2011
6
196-210
204
6
9-19
14.2
4
1-3
1.7
1.28
1.04
Secesh River Upper trap
summer-fall 2010
45
2-71
39
44
2-10
5.8
18
-1-1
0.2
1.4
1.08
spring 2011
1
N/A
253
1
N/A
14
0
N/A
N/A
N/A
1.18
Secesh River Lower trap
summer-fall 2010
76
4-73
27
76
-4-17
2.9
31
-1-2
0.2
1.22
1.13
spring 2011
3
279-293
284
3
82-93
87
1
N/A
4.8
1.42
1.18
Marsh Creek Upper trap
summer-fall 2010
221
1-92
47
221
-1-27
12.3
0
N/A
N/A
1.34
N/A
spring 2011
1
N/A
301
1
N/A
27
0
N/A
N/A
N/A
1.07
Marsh Creek Lower trap
summer-fall 2010
100
1-99
48
100
-2-24
10.8
1
N/A
3.1
1.34
1.21
spring 2011
2
261-275
268
2
25-30
27.5
1
N/A
8.7
N/A
1.08
Salmon River
spring 2011
15
219-261
241
15
13-49
32
0
N/A
N/A
N/A
N/A
Snake River
spring 2011
4
213-280
250
4
17-53
36.5
0
N/A
N/A
1.28
N/A
Yankee Fork
summer-fall 2010
1
N/A
45
1
N/A
12
1
N/A
2.6
1.03
1.1
Totals
1,013
1-293
145
996
-7-93
18.2
384
-2-5
2.1
1.26
1.1
27
Detection at Dams
Parr-to-Smolt Survival Estimates
For fish from all Idaho streams combined, we estimated an average annual
parr-to-smolt survival probability of 17.4% (SE 1.0%; Table 5; Appendix Tables 5-20).
This estimate was based on expanded detections at Lower Granite Dam from 1 April to
27 June 2011 (2,653 fish).1 An additional 1,060 first-time detections (not expanded)
were recorded at Little Goose, Lower Monumental, Ice Harbor, McNary, John Day, and
Bonneville Dam, and in the PIT-tag detection trawl in the upper Columbia River estuary
(Appendix Tables 5-19 and 21-26). By comparing all first-time detections at
interrogation dams and the trawl (2,093) to the expanded number of detections at Lower
Granite Dam (2,653), we estimated that 21.1% of the wild fish from Idaho passed the
dams without being detected.
Table 5. Summary of observed and expanded detections of PIT-tagged wild
spring/summer Chinook salmon smolts from Idaho at Lower Granite Dam in
2011. Expanded numbers are parr-to-smolt survival estimates (%); standard
errors in parenthesis. See Table 1 for numbers released.
Lower Granite Dam Detections
Observed
Expanded
Stream
N
%
N
% (SE)
Bear Valley Creek
58
5.8
145
14.4 (2)
Elk Creek
71
6.9
180
17.6 (2)
Marsh Creek
91
8.8
232
22.5 (2)
Cape Horn Creek
9
6.4
22
15.6 (5)
Sulphur Creek
49
7.3
121
18.0 (3)
Valley Creek
75
3.0
201
8.0 (1)
Loon Creek
82
9.9
214
25.9 (3)
Camas Creek
66
13.0
182
35.9 (4)
Herd Creek
76
7.5
204
20.0 (2)
Big Creek (upper)
52
4.5
138
12.1 (2)
Big Creek (lower)
136
9.6
328
23.2 (2)
WF Chamberlain/Chamberlain Cr
101
7.1
253
17.8 (2)
S Fork Salmon River
80
7.7
208
20.1 (2)
Secesh River
68
6.8
177
17.6 (2)
Lake Creek
19
4.1
49
10.6 (2)
Totals or averages
1,033
6.8
2,653
17.4 (1)
1 Due to rounding, the expanded detection numbers at Lower Granite Dam in Table 5 may vary slightly
from those in Appendix Tables 5-20.
28
Valley Creek—For Chinook salmon juveniles detected at the Valley Creek
instream PIT-tag monitors, we estimated an overall survival rate to Lower Granite Dam
of 22.8% in 2011 (SE = 2.8%; 95% CI 17.6-28.7%). Estimated overall parr-to-smolt
survival for fish from this stream was 8.0% (SE 0.9%; 95% CI 6.2-9.9%; Table 5).
Estimated survival to Lower Granite Dam in 2010-2011 was 17.9% (SE = 3.2%; 95% CI
12.1-24.7%) for fish leaving Valley Creek in late summer/fall, 22.2% (SE = 4.9%; 95%
CI 13-32.1%) for fish leaving in winter, and 65.3% (SE = 18.1%; 95% CI 31.8-100.7%)
for fish leaving in spring.
Big Creek—For Chinook salmon juveniles PIT tagged in lower Big Creek and
detected at the Big Creek instream PIT-tag monitors, overall survival to Lower Granite
Dam was estimated at 26.7% (SE = 4.9%; 95% CI 17-35.9%). Overall parr-to-smolt
estimated survival for fish from this stream (area) was 23.2% (SE 1.9%; 95% CI
19.5-27.2%; Table 5). During 2010-2011, estimated survival was 28.8% (SE = 5.9%;
95% CI 18-41.5%) for lower Big Creek fish detected in late summer/fall, 27.4% (SE =
10.6%; 95% CI 9.1-50.7%) for fish detected in winter, and 0% for fish detected in spring.
For Chinook salmon juveniles PIT tagged in upper Big Creek and detected on the
lower Big Creek instream monitors, overall survival to Lower Granite Dam was
estimated at 28.6% (SE = 10.8%; 95% CI 9.4-50.7%). Overall parr-to-smolt survival for
fish from upper Big Creek was estimated at 12.1% (SE = 1.7%; 95% CI 8.9-15.7%;
Table 5). For upper Big Creek fish detected at the Big Creek monitors, estimated
survival to Lower Granite Dam in 2010-2011 was 18.4% (SE = 10%; 95% CI 0-37.9%)
for upper Big Creek fish detected in late summer/fall, 0.0% for fish detected in winter,
and 163.3% (SE = 83.6%; 0-329.4%) for fish detected in spring.
Secesh River and Lake Creek—In 2011, we estimated a 36.0% (SE = 5.6%;
95% CI 25.5-47.6%) overall survival rate to Lower Granite Dam for Chinook salmon
juveniles previously detected at the lower Secesh River instream PIT-tag monitors near
Zena Creek. For fish detected at this monitoring site, estimated survival rates to the dam
in 2010-2011 were 37.2% (SE = 6.4%; 95% CI 25.1-49.6%) for fish detected in late
summer/fall, 21.3% (SE = 11.9%; 95% CI 0-48.2%) for fish detected in winter, and
70.3% (SE = 44.4%; 95% CI 0-167.4%) for fish detected in spring. The overall
parr-to-smolt estimated survival rate for fish from these streams was 15.4% (SE 2.2%;
95% CI 11.0-19.8%).
29
Relationship between Length and Detection
For fish from all Idaho streams combined, average fork length at release was
65.0 mm (Table 1; Appendix Table 1). Among these fish, the average fork length at
release of fish detected the following spring at dams was significantly longer than that of
fish not detected at the dams (67.3 vs. 65.4 mm; P < 0.01). Also, fish that were larger at
release tended to pass Lower Granite Dam earlier than their smaller cohorts (P < 0.001;
Figure 10).
Figure 10. The relationship between fork length of Idaho parr at tagging (in 2010) to
detection date at Lower Granite Dam in 2011 (n = 1,023).
R² = 0.0536
26-Mar
2-Apr
9-Apr
16-Apr
23-Apr
30-Apr
7-May
14-May
21-May
28-May
4-Jun
11-Jun
18-Jun
25-Jun
2-Jul
9-Jul
50 55 60 65 70 75 80 85 90 95 100
Detection Date (2011)
Length at Tagging in 2010 (mm)
30
All Idaho fish were grouped in 5-mm length bins, and their length distributions
were compared using a series of chi-square tests. The length distributions of all fish were
compared to those of fish detected at the dams in spring. The expected number of
detected fish from each length bin was based on the proportion of released fish in each
bin and was compared to the observed number. For the two smallest length bins
(60-64 mm and 59 mm or less), significantly less detected fish were observed than
expected (P < 0.0001 for both) and for the three largest length bins significantly more
detected fish were observed than expected (P < 0.02 for all three; Figure 11). For the
length bin 65-69, expected and observed detections were similar (P = 0.067).
Figure 11. Percent by fork length increments (mm), of PIT-tagged wild spring/summer
Chinook salmon parr released in Idaho streams in 2010 (n = 15,123) and
percent of fish detected for these length increments at dams in spring and
summer 2011 (n = 2,073).
In 2011, we found a significant difference in fork length at time of release
between fish that passed Lower Granite Dam in April and May and fish that passed after
May (P < 0.0001). Fish migrating through the dam in April and May were on average
4.8 mm larger at release than fish migrating after May. However, only 40 fish migrated
through the dam after May. These data suggest that fish size may have influenced
migration timing or overwintering location.
0
5
10
15
20
25
30
35
<=59 60-64 65-69 70-74 75-79 80-84 85-89 90-94
Percent of totl fish
Fork length bin (5 mm)
Length at release
Detected lengths
31
Migration Timing
Lower Granite Dam
Passage timing at Lower Granite Dam varied for fish from the 19 Idaho and
Oregon stream populations (Figure 12). Comparisons among these 19 populations
(Appendix Table 4a-4b, Figure 12) showed that fish from Cape Horn Creek and the upper
Imnaha River had a significantly earlier passage timing of the 10th percentile than fish
from all the other streams except Big (lower), Marsh, Lake, Elk, and Herd Creeks and the
South Fork Salmon, Secesh, and Lostine Rivers (P <0.05). The 10th percentile passage
date of fish from upper Big Creek was significantly later than that of fish from all other
streams except Camas, Catherine, and Loon Creeks (P <0.05). Standard errors of these
estimates ranged 0.8-5.9 d (median 2.36 d). Overall, the 10th percentile passage date for
fish from all 19 stream populations ranged from 4 April to 7 May (Appendix Tables
4a-4b).
In comparisons of the 50th percentile passage date at Lower Granite Dam, fish
from Big (lower) and Cape Horn Creeks and Secesh River were significantly earlier than
fish from all other streams except Elk and Sulphur Creeks and South Fork Salmon and
Lostine Rivers (P <0.05). Fish from Big (upper) and Camas Creeks were significantly
later than fish from all other streams except Valley, Loon, and Herd Creeks and the
Minam River (P <0.05). Standard errors of these estimates ranged 0.4-7.8 d (median
1.17 d). The 50th percentile passage date for fish from all 19 stream populations ranged
from 1 May to 16 May (Appendix Tables 4a-4b).
In terms of the 90th percentile passage date at the dam, fish from Big (lower) and
Cape Horn Creeks were significantly earlier than fish from all other streams except Lake,
Marsh, Sulphur, Herd, and Loon Creeks (P <0.05). Fish from Catherine Creek were
significantly later than fish from all other stream populations except Secesh, Lostine, and
Minam Rivers and Valley Creek (P <0.05). Standard errors of these estimates ranged
from 0.2 to 6.7 d (median 1.64 d). The 90th percentile passage date for fish from all
streams combined ranged from 14 May to 8 June (Appendix Tables 4a-4b).
For the number of days encompassing the middle 80th percentile passage (10th to
90th percentile), fish from Big (upper), Camas, and Loon Creeks had a significantly more
condensed distribution (17-19 d) than did fish from all other streams (34-61 d; P <0.05)
except Sulphur Creek (28 d) (Appendix Tables 4a-4b). Fish from the Secesh, Imnaha,
and Lostine Rivers displayed significantly more protracted timing at the dam than fish
from all other stream populations (56-61 d vs. 17-46 d; P <0.05). Standard errors of
these estimates ranged 0.8-7.7 d (median 3.23 d).
32
1-A pr
11-Apr
21-Apr
1-M ay
11- M ay
21- M ay
31- M ay
10-Jun
20-Jun
30-Jun
Secesh
Cape Horn
Lowe r Bi g
Salmon SF
Elk
Lostine
Sulfur
Im nah a
Mars h
Bear Valley
Ch am b er la in
Catherine
Lake
He rd
Mi nam
Valley
Lo on
Camas
Upp e r B ig
2011 Date
Stream
90%
50%
10%
Figure 12. Estimated passage distribution at Lower Granite Dam in 2011 for wild
spring/summer Chinook salmon smolts from streams of Idaho and Oregon.
Big Creek is divided into lower and upper portions and Chamberlain and W.F.
Chamberlain Creeks were combined for these analyses. See Appendix Tables
5-20 for daily estimated passage numbers from Idaho streams.
33
Detection data at Lower Granite Dam for fish from streams with 8 or more years
of data has shown clear variation in arrival timing of the 10th, 50th, and 90th percentiles
among these 19 stream populations (Table 6). Secesh River fish had significantly earlier
passage timing of the 10th population percentile at Lower Granite Dam than fish from all
other streams except Lake Creek, and Lostine, Minam, and upper Imnaha Rivers
(P <0.05). Also, upper Big Creek fish had significantly later migration timing at the dam
than fish from all other streams (P <0.05).
Secesh River fish had significantly earlier arrival timing at Lower Granite Dam of
the 50th population percentile than fish from all other streams except lower Big Creek
(P <0.05). Fish from upper Big Creek had significantly later timing of the 50th percentile
at the dam than fish from all other streams except Catherine Creek (P <0.05). Lower Big
Creek fish had significantly earlier timing of the 90th percentile at the dam than fish from
all other streams except Herd Creek (P <0.05). Fish from upper Big and Catherine
Creeks had significantly later passage timing of the 90th percentile than fish from all
other streams except Bear Valley, Cape Horn, Lake, and Valley Creeks, and the Secesh
and South Fork of the Salmon Rivers (P <0.05).
34
Table 6. The 95% confidence interval (CI) and mean passage dates (10th, 50th, and 90th percentiles), with standard errors
(SE) in days, at Lower Granite Dam for wild spring/summer Chinook salmon smolts from streams in Idaho and
Oregon over all data years.
Percentile passage dates at Lower Granite Dam (95% CI, mean, SE)
Data years
Stream
10th (SE)
50th (SE)
90th (SE)
Secesh River
11-17 April, 14 April (1)
24-29 April, 26 April (1)
24 May-5 June, 30 May (3)
22
South Fork Salmon River
16-23 April, 20 April (2)
6-12 May, 9 May (1)
31 May-9 June, 4 June (2)
20
Catherine Creek
24-29 April, 27 April (1)
11-19 May, 15 May (2)
29 May-9 June, 3 June (3)
21
Imnaha River (upper)
13-19 April, 16 April (1)
30 April-5 May, 3 May (1)
19-27 May, 23 May (2)
19
Bear Valley Creek
18-25 April, 21 April (2)
5-11 May, 8 May (1)
26 May-3 June, 30 May (2)
20
Big Creek (upper)
26 April-4 May, 30 April (2)
13-23 May, 18 May (2)
28 May-13 June, 5 June (4)
17
Elk Creek
17-24 April, 20 April (2)
2-8 May, 5 May (1)
24 May-1 June, 28 May (2)
19
Valley Creek
22-29 April, 25 April (2)
9-17 May, 13 May (2)
30 May-9 June, 4 June (2)
20
Marsh Creek
17-23 April, 20 April (1)
2-8 May, 5 May (1)
19-27 May, 23 May (2)
17
Lake Creek
13-19 April, 16 April (2)
27 April-4 May, 1 May (2)
23 May-6 June, 30 May (3)
18
Lostine River
13-20 April, 16 April (2)
1-7 May, 4 May (1)
19-27 May, 23 May (2)
20
Sulphur Creek
17-26 April, 22 April (2)
2-14 May, 8 May (3)
20 May-1 June, 26 May (3)
13
Cape Horn Creek
18-29 April, 23 April (3)
6-15 May, 11 May (2)
22 May-4 June, 29 May (3)
14
Big Creek (lower)
16-22 April, 19 April (1)
26 April-1 May, 29 April (1)
8-15 May, 11 May (1)
15
E. Fork Salmon River
15-24 April, 19 April (2)
25 April-7 May, 1 May (2)
13-23 May, 18 May (2)
7
Loon Creek
23 April-1 May, 27 April (2)
5-13 May, 9 May (2)
17-25 May , 21 May (2)
13
Herd Creek
17-24 April, 21 April (2)
28 April-5 May, 1 May (2)
12-19 May, 15 May (2)
13
Grand Ronde River (upper)
23 April-10 May, 1 May (3)
13 May-4 June, 24 May (4)
21 May-3 July, 12 June (8)
5
Imnaha River (lower)
5-20 April, 12 April (2)
14 April-5 May, 25 April (3)
2-15 May, 9 May (2)
4
Chamb/WF Chamberlain Cr
17-24 April, 21 April (2)
29 April-8 May, 3 May (2)
16 May-7 June, 27 May (5)
13
Camas Creek
24-30 April, 27 April (1)
8-16 May, 12 May (2)
22-28 May, 25 May (2)
13
Minam River
14-21 April, 17 April (2)
2-10 May, 6 May (2)
20-27 May, 23 May (2)
13
35
0
50
100
150
200
250
0
2
4
6
8
10
12
14
16
4-6 Apr
10-12 Apr
16-18 Apr
22-24 Apr
28-30 Apr
4-6 May
10-12 May
16-18 May
22-24 May
28-30 May
3-5 Jun
9-11 Jun
15-17 Jun
21-23 Jun
27-29 Jun
3-5 Jul
flow level (Kcfs)
Total detections at Lower Granite Dam (%)
Timing
Flow
Comparison with River Flows
We grouped first-time detections (expanded) at Lower Granite Dam of all Idaho
and Oregon streams combined and compared their collective timing with river flows
during the same periods (Figure 13 and Appendix Table 20). Overall, passage at the dam
during 2011 occurred between early April and late-June, with the middle 80th percentile
passage occurring from 14 April to 24 May (Table 7). The peak passage date occurred
during moderate flows of 99.0 kcfs on 11 May (Appendix Table 20).
Figure 13. Overall migration timing of PIT-tagged wild spring/summer Chinook salmon
smolts with associated river flows at Lower Granite Dam, 2011. Daily
detections from Idaho and Oregon streams were pooled in 3-day intervals and
expanded based on daily detection probability. River flows at the dam were
averaged daily over the same periods.
36
Table 7. Annual passage dates at Lower Granite Dam from 1989 to 2011 for combined
populations of wild spring/summer Chinook salmon smolts PIT tagged the
previous summers as parr in Idaho and Oregon streams. No fish were tagged in
the middle fork Salmon River for migration years 1989, 1996, and 1997. Years
from 1996 to 1998 had much higher proportions of Oregon fish.
Passage periods at Lower Granite Dam
10%
50%
90%
Range
1989
23 April
14 May
13 June
04 April-22 July
1990
19 April
07 May
07 June
05 April-18 July
1991
01 May
18 May
12 June
13 April-20 July
1992
15 April
02 May
27 May
05 April-27 July
1993
26 April
14 May
31 May
14 April-10 August
1994
22 April
08 May
01 June
13 April-04 Sept.
1995
17 April
09 May
04 June
08 April-22 Sept.
1996
15 April
27 April
19 May
09 April-15 July
1997
12 April
24 April
18 May
31 March-22 Sept.
1998
11 April
02 May
23 May
31 March-07 Aug.
1999
20 April
03 May
28 May
27 March-08 July
2000
17 April
07 May
30 May
10 April-20 July
2001
26 April
09 May
27 May
06 April-07 July
2002
16 April
03 May
30 May
28 March-05 July
2003
18 April
11 May
29 May
31 March-04 July
2004
16 April
03 May
26 May
01 April-16 July
2005
25 April
07 May
24 May
04 April – 20 June
2006
18 April
02 May
22 May
03 April – 18 June
2007
15 April
30 April
14 May
05 April-18 June
2008
30 April
11 May
23 May
10 April-02 July
2009
23 April
02 May
20 May
02 April-25 June
2010
26 April
09 May
29 May
20 April-08 July
2011
14 April
10 May
24 May
01 April–27 June
Environmental Information
Environmental water quality factors varied by month and between locations
(Appendix Tables 27-42), as did the percentage of fish collected and/or detected at
adjacent traps or instream PIT-tag monitors (Appendix Figures 1-6). In 2007, Northwest
Fisheries Science Center personnel completed the Water Quality Baseline Environmental
Monitoring website for storage and dissemination of water quality data collected during
this study since 1993 (NWFSC 2007). This website also has links to weather, climate,
and stream flow data in the Salmon River basin.
37
DISCUSSION
Mortality rates associated with collection and tagging in 2010 were comparable to
those in earlier years (Achord et al. 1992; 1994-1998; 2000-2011). Detection data from
instream PIT-tag monitoring systems in Valley Creek have enabled us to estimate
survival and migration timing for wild Chinook salmon juveniles leaving this stream
from late summer to the following spring. We now have survival estimates and timing
information for Valley Creek fish from 2003 to 2011. In 2008, monitoring systems in
Valley Creek were improved with the addition of multiplex transceivers and a total of 7
antennas. These improvements increased the accuracy of our survival estimates. In
2008-2009, 23.5% of the tagged fish we released were detected at the monitors; however,
in 2009-2010, only 18.4% were detected. Extensive improvements to the Valley Creek
monitoring systems in 2010-2011 resulted in detection of 30.4% of the tagged fish we
released.
Although we have had a sufficient number of detections to estimate survival from
the Big Creek monitors in every study year since 2008, these monitors detected only 9.2,
9.5, and 11.3%, of the tagged fish, in 2008-2009, 2009-2010, and 2010-2011,
respectively. These low detection rates have resulted in extreme variability in our annual
estimates of survival to Lower Granite Dam (range 0.0-163.3%). More precise survival
estimates may be obtained in the future by increasing the number of fish tagged or by
improving detection efficiency at this site (e.g., by adding more antennas). Continued
development and maintenance of these instream monitoring sites will be conducted by
the ISEMP Project.
There is also a need for new survival models that are appropriate for the data
collected from instream PIT-tag monitoring sites. This need increases with additional
years of data collected from existing instream sites, as well as new data expected from
sites planned for the Salmon River basin and for additional streams throughout the
Columbia River Basin.
From measurements taken at Little Goose Dam, overall mean growth during the
parr-to-smolt stage was 0.15 mm/d for our study fish during 2010-2011. This was
comparable to the overall growth rates measured in previous years, which range
0.13-0.16 mm/d (Achord et al. 2002-2011). The overall mean weight gain of 0.033 g/d in
2010-2011 was also comparable to that measured in previous years.
Operation of the juvenile fish bypass system at Little Goose Dam was changed in
April 2010. This operational change precluded the detection and separation of wild fish
for measurement throughout April 2010 and through 28 April 2011. The “primary
38
0
5
10
15
20
25
30
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
bypass” mode of operation is continuous except for brief sampling periods. We
estimated that during primary bypass operation at Little Goose Dam, we missed
detections for 22 and 19.4% of the early (April) wild PIT-tagged migrants in 2010 and
2011, respectively. Therefore, since this operational mode at Little Goose Dam will
continue into the foreseeable future, we will move all separation-by-code activities to
Lower Granite Dam in 2012.
Annual parr-to-smolt survival estimates for the combined Idaho and Oregon
populations over the last 19 years have ranged 8.2-24.4%, with an overall average annual
survival rate of 16.4% (Figure 14). The lowest parr-to-smolt survival rates were
estimated in 2004 and 2005 (8.2 and 8.4%, respectively). These low estimates may have
resulted from stream conditions with much higher parr density during these same years
(Figure 15). Returns of wild adults to the Snake River basin from 2001 to 2003 were
more than an order of magnitude greater than those from 1994 to 1996, when we
measured the highest rates of parr-to-smolt survival (20.6 to 24.4%).
Figure 14. The overall estimated parr-to-smolt survival rates for wild spring/summer
Chinook salmon from Idaho and Oregon streams to Lower Granite Dam from
1993 to 2011. Overall average standard error = 0.7% (yearly range 0.2-1.8%).
39
0
5
10
15
20
25
30
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Survival (%)
Relative parr density (Number/100 m2)
Tagging year
Parr/100m-sq
Parr-to-smolt-surv
Figure 15. Annual average relative Chinook salmon parr densities (per 100 m2) in areas
sampled in all Idaho streams from 1992 to 2010 plotted against subsequent
annual smolt survival estimate to Lower Granite Dam the following year.
In 2011, fish that were larger at tagging tended to arrive at Lower Granite Dam
earlier than fish that were smaller at tagging. In addition, we observed that wild fish
detected at the dam early in the migration season (April and May) had been significantly
larger at release than fish migrating after May. Over the two decades of this wild fish
study, we have consistently observed this relationship between length at tagging and
migration timing at Lower Granite Dam.
In contrast, detections on the instream monitors at Valley Creek over the last
7 years have shown no biologically meaningful relationship between length at tagging
and migration timing (Achord et. al. 2006-2011; Figure 3). Variable relationships
between length at tagging and migration timing have been observed in data from the
lower Big Creek monitors Creek since 2008, and in data from the lower Secesh River
monitors in 2010-2011. These data also have shown no biologically meaningful
relationship between size and timing (Achord et. al. 2010, 2011; Figures 5, 7, and 9).
The mixed results over these years show that the initiation of movement from natal
40
rearing streams to larger rivers by parr, pre-smolts, and smolts was probably not related
to parr size at tagging. However, larger fish probably initiate smoltification earlier than
smaller tagged fish in spring, thus arriving at Lower Granite Dam earlier.
In spring 2011, we observed that for populations from the combined streams
overall, the 50th and 90th passage percentiles occurred in mid and late May, respectively
at Lower Granite Dam.
In 2011, moderate-to-high flows occurred throughout the migration period. In
spring and early summer prevailing weather conditions were cooler and wetter than
normal, with flows in the Snake River basin that were much higher than normal. As we
have reported previously, smolt passage timing at Lower Granite Dam for individual wild
Chinook salmon populations has been highly variable and usually protracted, with timing
patterns for some populations ranging from early to late spring. Complex yearly
interrelationships between flow and annual climate conditions are primary factors
contributing to migration timing. However, water temperatures in streams above the
dam, turbidity, physiological development, variability in stock behavior, fish size, and
other yet unknown factors may all contribute substantially to wild smolt passage timing.
As additional instream PIT-tag monitors, traps, and environmental monitors are
installed in study streams, we can more accurately examine the relationships between
environmental conditions within the streams and the movements of fry, parr, and smolts
out of their natal rearing areas. Mapped over time, this information, along with weather
and climate data, may provide tools for the prediction of movement in different wild fish
populations. Such tools are vital to recovery planning for threatened or (ESA)
endangered species of Pacific salmon.
ACKNOWLEDGMENTS
We thank the Bonneville Power Administration for funding this project. Thanks
to Matthew Nesbit, Nathan Dumdei, Richard Nelson, Bill Muir, Randy Absolon, Galen
Wolf, Louis Tullos, Shane Collier, Jeff Moser, John Ferguson, and Richard Ledgerwood
for their excellent assistance in collecting and PIT tagging fish for this study. Also,
thanks to personnel from the Idaho Department of Fish and Game and the Nez Perce
Tribe for providing data from trapping operations in natal rearing areas.
41
42
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Chinook salmon smolts, 1999. Report to the Bonneville Power Administration,
Portland, OR. Available www.nwfsc.noaa.gov/ publications/index.cfm.
Achord, S., G. A. Axel, E. E. Hockersmith, B. P. Sandford, M. B. Eppard, and G. M.
Matthews. 2001b. Monitoring the migrations of wild Snake River
spring/summer Chinook salmon smolts, 2000. Report to the Bonneville Power
Administration, Portland, OR. Available www.nwfsc.noaa.gov/
publications/index.cfm.
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Matthews. 2002. Monitoring the migrations of wild Snake River spring/summer
Chinook salmon smolts, 2001. Report to the Bonneville Power Administration,
Portland, OR. Available www.nwfsc.noaa.gov/ publications/index.cfm.
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Matthews. 2000. Monitoring the migrations of wild Snake River spring/summer
Chinook salmon smolts, 1998. Report to the Bonneville Power Administration,
Portland, OR. Available www.nwfsc.noaa.gov/ publications/index.cfm.
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publications/index.cfm.
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43
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salmon smolts, 1992. Report to the Bonneville Power Administration, Portland,
OR. Available www.nwfsc.noaa.gov/ publications/index.cfm.
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wild Snake River spring/summer Chinook salmon smolts, 2003. Report to the
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K. W. McIntyre, N. N. Paasch, and J. G. Williams. 2008. Monitoring the
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44
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K. W. McIntyre, N. N. Paasch, and J. G. Williams. 2009. Monitoring the
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Available www.nwfsc.noaa.gov/ publications/index.cfm.
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45
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46
APPENDIX
Data Tables and Figures
47
Appendix Table 1. Summary of numbers collected, tagged, released (with tags), and minimum, maximum, and mean lengths
and weights of wild Chinook salmon parr, collected and PIT tagged in various Idaho streams, 2010. The
length-weight data includes recaptured tagged fish.
Collection
Tagging and release
Stream
Number of fish
Length
Weight
Length
Weight
Collected
Tagged
Released
Range
Mean
Range
Mean
Range
Mean
Range
Mean
Bear Valley Creek
1,195
1,010
1,004
46-124
60.7
0.7-22.9
3.1
55-82
61.9
1.6-7.3
3.1
Elk Creek
1,098
1,031
1,025
48-128
64.3
1.1-31.6
3.8
55-80
63.6
1.9-6.9
3.4
West Fork Chamberlain Creek
791
727
727
49-113
64.4
1.3-19.3
3.4
53-97
65.3
1.5-9.5
3.4
Valley Creek
2,938
2,517
2,513
39-130
62.7
0.8-30.0
3.4
53-121
63.9
1.4-25.1
3.4
Camas Creek
562
506
506
48-84
62.6
0.9-8.0
3.3
55-84
63.4
1.7-8.0
3.3
Chamberlain Creek
976
697
697
34-125
59.5
1.1-12.3
3.4
53-105
62.4
1.6-6.6
3.3
Big Creek (upper)
1,918
1,194
1,145
40-119
58.6
0.7-23.4
3.2
53-108
62.5
1.4-17.0
3.0
Big Creek (lower)
1,488
1,413
1,413
51-107
76.2
1.6-13.4
5.5
58-104
76.2
1.6-10.3
5.5
Loon Creek
874
836
828
49-224
66.2
1.2-18.7
3.8
55-224
66.7
1.7-7.6
3.9
Marsh Creek
1,221
1,035
1,030
42-125
62.9
1.5-31.7
3.8
53-93
64.1
1.8-12.7
3.6
Sulphur Creek
694
672
671
52-142
68.8
1.6-38.8
4.5
55-83
68.0
1.7-7.8
4.2
Lake Creek
625
458
458
41-97
58.8
1.2-8.7
3.1
52-97
61.1
1.2-7.3
3.1
South Fork Salmon River
1,052
1,034
1,034
56-114
69.8
2.1-18.8
4.4
56-89
69.7
2.1-10.3
4.3
Secesh River
1,243
1,001
1,001
46-115
62.7
1.5-13.3
3.4
52-102
64.4
1.7-13.3
3.4
Cape Horn Creek
396
142
141
35-108
53.6
0.8-17.8
3.4
55-79
59.5
1.1-5.7
2.7
Herd Creek
1,092
1,019
1,017
48-140
68.4
0.9-37.6
4.6
55-130
68.1
1.8-31.0
4.4
Total or mean
18,163
15,292
15,210
45-125
63.8
1.2-21.6
3.8
54-105
65.0
1.6-11.6
3.6
48
Appendix Table 2a. Summary of conditions and time at tagging and release, including methods of capture, distance from
mouth of stream to release point, number of tagged fish (non-recapture) released in 2010. The number
and percent of first-time detections (in 2011) is also shown for each tagging group (detections are
unadjusted and include 7 downstream dams and the PIT-tag trawl at the mouth of the Columbia River.
Tagging (2010)
Capture
Release
Detection (2011)
Stream
Date
(°C)
method
Date
Time
(°C)
km
n
n
%
Bear Valley Creek
SA10201.BV1
7/20/10
10.0
SHOCK
7/21/10
06:00
10.0
09
128
20
15.6
SA10201.BV2
7/20/10
10.0
SHOCK
7/20/10
11:00
13.0
10
420
46
10.9
SA10202.BV1
7/21/10
09.0
SHOCK
7/21/10
08:00
10.0
13
178
13
7.3
SA10202.BV2
7/21/10
09.0
SHOCK
7/22/10
05:30
10.0
14
278
37
13.3
Elk Creek
SA10203.EC1
7/22/10
10.0
BSEINE
7/23/10
05:00
11.0
01
164
20
12.2
SA10203.EC2
7/22/10
10.0
SHOCK
7/22/10
10:45
14.5
02
361
68
18.8
SA10204.EC1
7/23/10
11.0
SHOCK
7/23/10
11:30
15.0
04
500
62
12.4
Marsh Creek
SA10206.MC1
7/25/10
08.0
SHOCK
7/26/10
05:15
09.0
11
113
23
20.3
SA10206.MC2
7/25/10
08.0
SHOCK
7/25/10
10:45
13.0
12
358
52
14.5
SA10207.MC1
7/26/10
10.0
SHOCK
7/26/10
10:15
11.0
14
105
18.8
Sulpur Creek
SA10211.SU1
7/30/10
10.0
SHOCK
7/31/10
05:00
10.0
06
123
14
11.4
SA10211.SU2
7/30/10
10.0
SHOCK
7/30/10
10:00
12.5
07
148
23
15.5
SA10212.SU1
7/31/10
10.0
SHOCK
7/31/10
10:30
12.0
08
400
57
14.2
Cape Horn Creek
SA10208.CH1
7/27/10
08.0
SHOCK
7/27/10
09:00
10.0
01
141
13
9.2
Valley Creek
SA10214.VC1
8/2/10
09.5
SHOCK
8/03/10
05:00
09.5
05
137
6
4.4
SA10214.VC2
8/2/10
10.0
SHOCK
8/02/10
10:40
13.5
05
718
52
7.2
SA10215.VC1
8/3/10
12.0
SHOCK
8/03/10
10:00
15.0
07
939
63
6.7
SA10216.VC1
8/4/10
09.0
SHOCK
8/04/10
11:00
13.0
12
719
45
6.3
Big Creek (upper)
SA10228.BC1
8/16/10
07.5
SHOCK
8/17/10
05:00
07.6
57
115
9
7.8
SA10228.BC2
8/16/10
08.0
SHOCK
8/16/10
12:30
13.3
58
484
50
10.3
SA10229.BC1
8/17/10
07.6
SHOCK
8/17/10
10:45
11.5
60
546
55
10.1
49
Appendix Table 2a. Continued.
Tagging (2010)
Capture
Release
Detection (2011)
Stream
Date
(°C)
method
Date
Time
(°C)
km
n
n
%
Big Creek (lower)
SA10244.LB1
9/1/10
10.4
SHOCK
9/02/10
07:30
10.5
10
569
122
21.4
SA10245.LB1
9/2/10
09.2
SHOCK
9/02/10
11:30
12.6
11
698
136
19.5
SA10246.LB1
9/3/10
09.8
SHOCK
9/03/10
08:30
10.5
12
146
26
17.8
Loon Creek
SA10224.LN1
8/12/10
07.2
SHOCK
8/13/10
05:00
08.1
29
116
24
20.7
SA10224.LN2
8/12/10
08.0
SHOCK
8/12/10
11:00
11.0
30
340
65
19.1
SA10225.LN1
8/13/10
08.1
SHOCK
8/13/10
10:00
10.5
32
372
84
22.6
Camas Creek
SA10218.CA1
8/6/10
10.0
SHOCK
8/07/10
05:05
10.0
21
137
28
20.4
SA10218.CA2
8/6/10
10.0
SHOCK
8/06/10
10:00
12.0
23
369
94
25.5
Herd Creek
SA10221.HC1
8/9/10
09.0
SHOCK
8/10/10
05:40
08.3
01
123
20
16.3
SA10221.HC2
8/9/10
09.0
SHOCK
8/09/10
11:00
09.5
02
602
79
13.1
SA10222.HC1
8/10/10
08.5
SHOCK
8/10/10
08:00
08.4
03
292
39
13.4
South Fork Salmon R
SA10231.SF1
8/19/10
11.0
SHOCK
8/20/10
06:00
10.0
117
112
19
17.0
SA10231.SF2
8/19/10
11.0
SHOCK
8/19/10
10:40
14.0
118
600
98
16.3
SA10232.SF1
8/20/10
10.0
SHOCK
8/20/10
08:10
09.5
119
322
48
14.9
WF Chamberlain Cr
SA10236.WC1
8/24/10
06.0
BSEINE
8/24/10
10:20
12.0
02
727
86
11.8
Chamberlain Creek
SA10237.CB1
8/25/10
08.0
SHOCK
8/26/10
05:10
08.0
24
129
21
16.3
SA10237.CB2
8/25/10
09.0
SHOCK
8/25/10
10:20
12.0
25
404
73
18.1
SA10237.CB3
8/25/10
12.0
SHOCK
8/25/10
11:20
14.0
26
164
17
10.4
Secesh River
SA10239.SE1
8/27/10
10.0
SHOCK
8/28/10
05:15
09.5
25
119
16
13.4
SA10239.SE2
8/27/10
10.0
SHOCK
8/27/10
12:15
13.5
26
406
58
14.3
SA10240.SE1
8/28/10
09.5
SHOCK
8/28/10
09:40
10.0
27
476
61
12.8
Lake Creek
SA10242.LC1
8/30/10
04.5
SHOCK
8/30/10
11:45
07.7
02
458
46
10.0
50
51
Appendix Table 2b. Universal Transverse Mercator grid coordinates of Global
Positioning System that identifies sampling areas at the beginning
and end of daily collections in streams for each collection crew in
2010.
Streams and
UTM start
UTM end
dates
Section covered
Northing
Easting
Northing
Easting
Bear Valley Cr
7/20/2010
right bank
4920610
11T633158
4920880
11T632033
7/20/2010
left bank
4920613
11T633191
4920776
11T632262
7/21/2010
left bank
4919132
11T630312
4918715
11T629672
7/21/2010
right bank
4919145
11T630285
4918715
11T629672
Elk Creek
7/22/2010
entire stream
------------
---------------
-------------
---------------
7/22/2010
right bank
------------
---------------
4918700
11T628791
7/22/2010
left bank
------------
---------------
4918574
11T629002
7/23/2010
right bank
------------
---------------
4919265
11T627744
7/23/2010
left bank
4918979
11T628805
4919348
11T627538
Marsh Creek
7/25/2010
right bank
4917116
11T646305
4915833
11T647256
7/25/2010
left bank
4917116
11T646305
4915833
11T647256
7/26/2010
left bank
4915759
11T647351
4915073
11T648128
7/26/2010
right bank
4915744
11T647344
4914960
11T648138
Sulphur Creek
7/30/2010
left bank
4933194
11T631143
4932563
11T630409
7/30/2010
right bank
4933194
11T631143
4932563
11T630409
7/31/2010
right bank
4932565
11T630402
4932459
11T629581
7/31/2010
left bank
4932565
11T630402
4932459
11T629581
Cape Horn Cr
7/27/2010
left bank
4916764
11T645394
4916089
11T645108
7/27/2010
right bank
4916764
11T645394
4916177
11T645178
Valley Creek
8/2/2010
right bank
4899472
11T661379
4899821
11T660583
8/2/2010
left bank
4899461
11T661382
4899790
11T660695
8/3/2010
right bank
4900565
11T659777
4901384
11T659411
8/3/2010
left bank
4900553
11T659769
4901402
11T659405
8/4/2010
left bank
4903764
11T659022
4904764
11T658865
8/4/2010
right bank
4903764
11T659022
4904483
11T658955
Big Creek-Upper
8/16/2010
left bank
4997282
11T632217
4996208
11T631557
8/16/2010
right bank
4997273
11T632210
4996213
11T631565
8/17/2010
left bank
4996200
11T631560
4995467
11T631346
8/17/2010
right bank
4996213
11T631565
4995565
11T631330
Big Creek-Lower
9/1/2010
right bank
4996499
11T670253
4996629
11T669503
9/1/2010
left bank
4996499
11T670253
4996597
11T669417
9/2/2010
right bank
4996597
11T669444
4996841
11T668291
9/2/2010
left bank
4996597
11T669444
4996841
11T668291
9/3/2010
left bank
4996847
11T668415
4996799
11T667957
9/3/2010
right bank
4996847
11T668415
4996799
11T667957
52
Appendix Table 2b. Continued.
Streams and
UTM start
UTM end
dates
Section covered
Northing
Easting
Northing
Easting
Loon Creek
8/12/2010
right bank
4942247
11T675167
4941028
---------------
8/12/2010
left bank
4942247
11T675167
4941028
---------------
8/13/2010
right bank
4941028
---------------
4940164
11T673192
8/13/2010
left bank
4941028
---------------
4940032
11T673023
Camas Creek
8/6/2010
left bank
4968505
11T696388
4967535
11T697065
8/6/2010
right bank
4968505
11T696388
4967554
11T697033
Herd Creek
8/9/2010
left bank
4892111
11T716222
4891190
11T717196
8/9/2010
right bank
4892114
11T716237
4891417
11T716861
8/10/2010
left bank
4890967
11T717363
4890679
11T717530
8/10/2010
right bank
4890967
11T717363
4890679
11T717530
South Fork Salmon River
8/19/2010
left bank
4944193
11T603574
4943001
11T603454
8/19/2010
right bank
4944549
11T603569
4943001
11T603454
8/20/2010
left bank
4943001
11T603454
4942682
11T603440
8/20/2010
right bank
4943001
11T603454
4942649
11T603317
West Fork Chamberlain Creek
8/24/2010
entire stream
5027449
11T641971
5027631
11T641713
Chamberlain Creek
8/25/2010
right bank
5026715
11T642387
5026001
11T641939
8/25/2010
left bank
5026715
11T642387
5026001
11T641939
Secesh River
8/27/2010
left bank
5005536
11T592768
5006898
11T593332
8/27/2010
right bank
5005536
11T592768
5006898
11T593332
8/28/2010
left bank
5006984
11T593474
5007663
11T593474
8/28/2010
right bank
5006984
11T593474
5007663
11T593474
Lake Creek
8/30/2010
right bank
5012350
11T586036
5012350
11T585498
8/30/2010
left bank
5012330
11T586017
5013154
11T585569
53
Appendix Table 3. Summary of observed total mortality for PIT-tagged wild Chinook
salmon parr collected from Idaho streams from July to September
2010. Number rejected includes; fish too small to tag, precocious
males, injured fish, fish collected for genetic evaluation, previously
tagged fish, and in some cases extra collected fish. The portion of
rejects that are precocious males are in parentheses. There were also
11 lost tags; 4 from upper Big Creek, 1 from Herd Creek, 3 from
Valley Creek, and 3 from Bear Valley Creek.
Stream
Number
collected
Number
Tagged
Number
Rejected
Percent
Rejected
(%)
Observed mortality
Collection
and
handling
Tagging
delayed
Total
No.
(%)
Bear Valley Creek
1,195
1,010
185 (4)
15.5
6
3
9
0.7
Elk Creek
1,098
1,031
67 (20)
6.1
8
6
14
1.3
Marsh Creek
1,221
1,035
186 (9)
15.2
9
5
14
1.1
Cape Horn Creek
396
142
254 (10)
64.1
4
1
5
1.3
Sulphur Creek
694
672
22 (10)
3.2
5
1
6
0.9
Valley Creek
2,938
2,517
421 (14)
14.3
34
1
35
1.2
Loon Creek
874
836
46 (1)
5.3
4
8
12
1.4
Camas Creek
562
506
56
10.0
12
0
12
2.1
Herd Creek
1,092
1,019
73 (11)
6.7
25
1
26
2.4
Big Creek (upper)
1,918
1,194
724 (26)
37.7
32
45
77
4.0
Big Creek (lower)
1,488
1,413
75 (1)
5.0
30
0
30
2.0
WF Chamberlain Cr
791
727
64 (1)
8.1
0
0
0
0.0
Chamberlain Creek
976
697
279 (8)
28.6
3
0
3
0.3
S. F. Salmon River
1,052
1,034
18 (3)
1.7
4
0
4
0.4
Secesh River
1,243
1,001
242 (3)
19.5
10
0
10
0.8
Lake Creek
625
458
167 (6)
26.7
5
0
5
0.8
Totals or average
18,163
15,292
2,879 (127)
15.8
191
71
262
1.44
54
Appendix Table 4a. Accumulated and 2011 passage dates at Lower Granite Dam for
PIT-tagged wild spring/summer Chinook salmon smolts from
streams in Idaho.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
Bear Valley Creek
1990
19 Apr
5 May
31 May
11 Apr-18 Jul
1991
3 May
20 May
12 Jun
18 Apr-23 Jun
1992
15 Apr
2 May
24 May
7 Apr-28 Jun
1993
29 Apr
16 May
22 Jun
22 Apr-27 Jul
1994
22 Apr
6 May
29 May
16 Apr-15 Jul
1995
28 Apr
18 May
12 Jun
13 Apr-20 Jul
1996a 1997a
---
---
---
---
1998
25 Apr
6 May
23 May
31 Mar-25 Jun
1999
23 Apr
3 May
7 Jun
20 Apr-21 Jun
2000
18 Apr
7 May
2 Jun
14 Apr-2 Jul
2001
8 May
16 May
28 May
26 Apr-17 Jun
2002
16 Apr
4 May
31 May
12 Apr-26 Jun
2003
14 Apr
5 May
28 May
12 Apr-14 Jun
2004
15 Apr
7 May
28 May
13 Apr-5 Jul
2005
20 Apr
5 May
23 May
20 Apr-10 Jun
2006
13 Apr
1 May
19 May
11 Apr-20 May
2007
18 Apr
3 May
13 May
8 Apr-24 May
2008
30 Apr
14 May
27 May
24 Apr-10 Jun
2009
22 Apr
1 May
27 May
18 Apr-16 Jun
2010
25 Apr
18 May
7 Jun
25 Apr-12 Jun
2011
17 Apr
9 May
30 May
4 Apr-9 Jun
Elk Creek
1991
3 May
20 May
16 Jun
25 Apr-24 Jun
1992
11 Apr
30 Apr
28 May
5 Apr-17 Jul
1993
2 May
16 May
11 Jun
21 Apr-26 Jun
1994
23 Apr
4 May
21 May
18 Apr-9 Jul
1995
18 Apr
11 May
5 Jun
10 Apr-9 Jul
1990a 1996a 1997a
---
---
---
---
1998
7 Apr
2 May
15 May
4 Apr-21 Jun
1999
21 Apr
3 May
27 May
1 Apr-8 Jul
2000
15 Apr
28 Apr
19 May
13 Apr-28 May
2001
30 Apr
11 May
27 May
30 Apr-27 May
2002
16 Apr
29 Apr
2 Jun
13 Apr-5 Jul
2003
20 Apr
6 May
29 May
31 Mar-30 May
2004
18 Apr
8 May
4 Jul
14 Apr-12 Jul
2005
27 Apr
11 May
29 May
18 Apr-12 Jun
2006
15 Apr
27 Apr
26 May
6 Apr-11 Jun
2007
16 Apr
2 May
14 May
14 Apr-31 May
2008
2 May
11 May
23 May
25 Apr-16 Jun
2009
25 Apr
30 Apr
18 May
19 Apr-7 Jun
2010
23 Apr
1 May
4 Jun
22 Apr-19 Jun
2011
13 Apr
4 May
27 May
5 Apr-21 Jun
55
Appendix Table 4a. Continued.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
Sulphur Creek
1990
18 Apr
30 Apr
31 May
11 Apr-27 Jun
1991a 1994a
---
---
---
---
1992
16 Apr
3 May
23 May
10 Apr-1 Jun
1993
28 Apr
16 May
12 Jun
24 Apr-28 Jun
1995
2 May
23 May
9 Jun
11 Apr-9 Jul
1996a -1999a
---
---
---
---
2000
15 Apr
7 May
24 May
12 Apr-30 May
2001a 2002a 2007a
---
---
---
---
2003
2 May
25 May
8 May
22 Apr-24 Jun
2004
10 Apr
25 Apr
11 May
2 Apr-24 May
2005
1 May
7 May
22 May
22 Apr-5 Jun
2006
11 Apr
28 Apr
17 May
11 Apr- 17 May
2008
3 May
12 May
2 Jun
27 Apr-4 Jun
2009
22 Apr
29 Apr
18 May
2 Apr-21 May
2010
26 Apr
6 May
23 May
25 Apr-6 Jun
2011
18 Apr
5 May
16 May
4 Apr-4 Jun
Cape Horn Creek
1990a1996a-1998a
---
---
---
---
1991
24 Apr
16 May
28 May
19 Apr-6 Jun
1992
12 Apr
28 Apr
30 May
10 Apr-1 Jun
1993
8 May
19 May
26 Jun
5 May-01 Jul
1994a
---
---
---
---
1995
29 Apr
14 May
19 Jun
14 Apr-28 Jul
1999
29 Apr
22 May
29 May
25 Apr-12 Jun
2000
1 May
24 May
1 Jun
20 Apr-09 Jul
2001a 2002a 2009a
---
---
---
---
2003
21 Apr
17 May
1 Jun
15 Apr-18 Jun
2004
15 Apr
4 May
24 May
14 Apr-28 May
2005
29 Apr
9 May
24 May
11 Apr-29 May
2006
23 Apr
30 Apr
14 Jun
22 Apr-14 Jun
2007
13 Apr
6 May
19 May
9 Apr-20 May
2008
3 May
18 May
23 May
25 Apr-3 Jun
2010
28 Apr
8 May
26 May
27 Apr-20 Jun
2011b
---
---
---
---
Camas Creek
1993
3 May
16 May
27 May
24 Apr-24 Jun
1994
30 Apr
15 May
26 May
24 Apr-11 Jul
1995
27 Apr
12 May
5 Jun
17 Apr-11 Jun
1997a1998a1999a
---
---
---
---
2000
26 Apr
25 May
2 Jun
13 Apr-24 Jun
2001a 2002a1996a
---
---
---
---
2003
2 May
24 May
30 May
26 Apr-6 Jun
2004
18 Apr
8 May
24 May
16 Apr-4 Jun
2005
29 Apr
7 May
28 May
12 Apr-19 Jun
2006
20 Apr
30 Apr
17 May
20 Apr-3 Jun
2007
23 Apr
6 May
16 May
19 Apr-19 May
2008
5 May
14 May
21 May
27 Apr-31 May
2009
25 Apr
8 May
22 May
25 Apr-5 Jun
2010
25 Apr
8 May
26 May
24 Apr-7 Jun
2011
4 Apr
15 May
23 May
7 Apr-11 Jun
56
Appendix Table 4a. Continued.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
Marsh Creek
1990
17 Apr
29 Apr
31 May
9 Apr-01 Jul
1991
26 Apr
20 May
9 Jun
17 Apr-18 Jun
1992
17 Apr
7 May
2 Jun
10 Apr-13 Jul
1993
29 Apr
15 May
27 May
24 Apr-10 August
1994
23 Apr
4 May
18 May
16 Apr-08 August
1995
17 Apr
9 May
24 May
11 Apr-08 Jul
1996a1997a1998a
---
---
---
---
1999
21 Apr
1 May
25 May
11 Apr-13 Jun
2000
21 Apr
28 Apr
27 May
14 Apr-16 Jun
2001a
---
---
---
---
2002
18 Apr
4 May
23 May
14 Apr-26 May
2003
14 Apr
5 May
29 May
3 Apr-9 Jun
2004
16 Apr
28 Apr
10 May
3 Apr-30 May
2005
27 Apr
6 May
18 May
22 Apr-4 Jun
2006
12 Apr
30 Apr
18 May
11 Apr-3 Jun
2007a
---
---
---
---
2008
29 Apr
7 May
18 May
24 Apr-20 May
2009
23 Apr
30 Apr
18 May
20 Apr-22 May
2010
27 Apr
10 May
24 May
24 Apr-6 Jun
2011
10 Apr
9 May
16 May
4 Apr-8 Jun
Valley Creek
1989
24 Apr
14 May
12 Jun
9 Apr-17 Jun
1990
16 Apr
8 May
5 Jun
12 Apr-29 Jun
1991
11 May
20 May
20 Jun
21 Apr-13 Jul
1992
15 Apr
30 Apr
27 May
13 Apr-4 Jun
1993
30 Apr
16 May
2 Jun
24 Apr-6 Jun
1994
24 Apr
4 May
3 Jun
22 Apr-9 Jun
1995
4 May
2 Jun
08 Jul
22 Apr-18 Jul
1996a1997a1998a
---
---
---
---
1999
24 Apr
13 May
12 Jun
19 Apr-01 Jul
2000
20 Apr
12 May
29 May
13 Apr-14 Jul
2001
10 May
19 May
1 Jun
28 Apr-03 Jul
2002
24 Apr
20 May
3 Jun
19 Apr-19 Jun
2003
14 Apr
17 May
28 May
1 Apr-31 May
2004
25 Apr
11 May
26 May
4 Apr-16 Jun
2005
27 Apr
15 May
8 Jun
23 Apr-20 Jun
2006
30 Apr
24 May
15 Jun
16 Apr-17 Jun
2007
20 Apr
3 May
20 May
13 Apr-24 May
2008
28 Apr
11 May
26 May
21 Apr-6 Jun
2009
24 Apr
4 May
4 Jun
10 Apr-18 Jun
2010
30 Apr
13 May
28 May
27 Apr-22 Jun
2011
27 Apr
14 May
2 Jun
6 Apr-16 Jun
57
Appendix Table 4a. Continued.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
Loon Creek
1993
5 May
12 May
17 May
3 May-5 Jun
1994
29 Apr
10 May
24 May
22 Apr-7 Jun
1995
23 Apr
11 May
28 May
13 Apr-7 Jun
1996a1997a1998a
---
---
---
---
1999
30 Apr
18 May
27 May
22 Apr-16 Jun
2000
22 Apr
8 May
24 May
14 Apr-1 Jun
2001a2002a2007a
---
---
---
---
2003
30 Apr
17 May
28 May
21 Apr-30 May
2004
23 Apr
5 May
15 May
15 Apr-26 May
2005
4 May
10 May
24 May
20 Apr-3 Jun
2006
20 Apr
2 May
19 May
10 Apr-21 May
2008
7 May
17 May
26 May
28 Apr-29 May
2009
24 Apr
30 Apr
19 May
16 Apr-21 May
2010
27 Apr
11 May
25 May
23 Apr-4 Jun
2011
30 Apr
14 May
19 May
11 Apr-5 Jun
East Fork Salmon River
Discontinued—see previous reports
Herd Creek
1992
14 Apr
20 Apr
10 May
13 Apr-18 May
1993
26 Apr
30 Apr
18 May
26 Apr-31 May
1994b
---
---
---
---
1995
18 Apr
3 May
14 May
11 Apr-28 May
1996a1997a 1998a
---
---
---
---
1999
20 Apr
29 Apr
10 May
30 March-20 May
2000
16 Apr
25 Apr
18 May
14 Apr-19 May
2001
30 Apr
4 May
14 May
28 Apr-7 Jun
2002b
---
---
---
---
2003
16 Apr
3 May
26 May
6 Apr-29 May
2004
16 Apr
30 Apr
10 May
12 Apr-21 Jun
2005
27 Apr
7 May
22 May
20 Apr-13 Jun
2006
16 Apr
25 Apr
6 May
10 Apr-16 May
2007b
---
---
---
---
2008
29 Apr
10 May
19 May
24 Apr-23 May
2009 a
---
---
---
---
2010
29 Apr
8 May
24 May
25 Apr-6 Jun
2011
14 Apr
12 May
18 May
5 Apr-31 May
58
Appendix Table 4a. Continued.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
South Fork Salmon River
1989
25 Apr
13 May
14 Jun
16 Apr-20 Jun
1990a
---
---
---
---
1991
20 Apr
16 May
10 Jun
17 Apr-13 Jul
1992
14 Apr
29 Apr
27 May
7 Apr-27 Jul
1993
29 Apr
16 May
2 Jun
26 Apr-28 Jun
1994
27 Apr
15 May
28 Jun
22 Apr-09 Jul
1995
20 Apr
10 May
10 Jun
13 Apr-13 Jul
1996
19 Apr
15 May
09 Jun
19 Apr-03 Jul
1997
13 Apr
28 Apr
12 Jun
07 Apr-15 Jun
1998
25 Apr
12 May
15 Jun
02 Apr-07 Aug
1999
31 Mar
04 May
01 Jun
27 Mar-11 Jun
2000
20 Apr
18 May
31 May
12 Apr-20 July
2001
29 Apr
14 May
01 Jun
26 Apr-07 July
2002
15 Apr
03 May
24 May
11 Apr-09 Jun
2003
19 Apr
16 May
03 Jun
19 Apr-12 Jun
2004
16 Apr
10 May
02 Jun
08 Apr-19 Jun
2005
28 Apr
12 May
30 May
22 Apr-19 Jun
2006
28 Apr
11 May
16 Jun
27 Apr-18 Jun
2007a2008a
---
---
---
---
2009
24 Apr
03 May
26 May
02 Apr-30 May
2010
25 Apr
05 May
20 May
23 Apr-05 Jun
2011
07 Apr
04 May
22 May
03 Apr-05 Jun
Big Creek (upper)
1990
27 Apr
30 May
22 Jun
17 Apr-18 Jul
1991
18 May
10 Jun
26 Jun
26 Apr-01 Jul
1992
22 Apr
8 May
3 Jun
15 Apr-26 Jun
1993
8 May
18 May
26 May
26 Apr-15 Jun
1994
3 May
19 May
19 Jul
25 Apr-30 Aug
1995
5 May
23 May
9 Jun
2 May-26 Jun
1996a 1997a1998a
---
---
---
---
1999
28 Apr
14 May
3 Jun
25 Apr-19 Jun
2000
30 Apr
27 May
14 Jun
15 Apr-29 Jun
2001a 2002a
---
---
---
---
2003
6 May
25 May
1 Jun
1 May-21 Jun
2004
18 Apr
12 May
5 Jun
15 Apr-17 Jun
2005
27 Apr
7 May
23 May
20 Apr-7 Jun
2006
26 Apr
8 May
25 May
19 Apr-10 Jun
2007
19 Apr
6 May
20 May
15 Apr-18 Jun
2008
6 May
20 May
23 May
25 Apr-5 Jun
2009
26 Apr
19 May
28 May
22 Apr-7 Jun
2010
1 May
20 May
5 Jun
25 Apr-13 Jun
2011
7 May
16 May
24 May
25 Apr-1 Jun
59
Appendix Table 4a. Continued.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
Big (lower)/Rush Creeks
1993
24 Apr
29 Apr
13 May
21 Apr-16 May
1994
23 Apr
29 Apr
11 May
21 Apr-15 Jun
1995
19 Apr
1 May
14 May
11 Apr-5 Jun
1996a
---
---
---
---
1997a
---
---
---
---
1998a
---
---
---
---
1999
19 Apr
28 Apr
23 May
4 Apr-30 May
2000
19 Apr
30 Apr
13 May
16 Apr-26 May
2001a
---
---
---
---
2002
15 Apr
25 Apr
7 May
12 Apr-22 May
2003
14 Apr
26 Apr
18 May
12 Apr-25 May
2004
15 Apr
23 Apr
4 May
6 Apr-15 May
2005d
22 Apr
2 May
9 May
6 Apr-15 May
2006d
11 Apr
22 Apr
3 May
10 Apr-22 May
2007d
18 Apr
27 Apr
6 May
6 Apr-12 May
2008d
29 Apr
12 May
20 May
23 Apr-20 May
2009d
24 Apr
28 Apr
7 May
3 Apr-21 May
2010d
24 Apr
29 Apr
6 May
22 Apr-5 Jun
2011d
9 Apr
2 May
14 May
6 Apr-21 May
West Fork Chamberlain Creek
1992c
15 Apr
26 Apr
3 Jun
12 Apr-24 Jun
1993
28 Apr
15 May
23 Jun
23 Apr-22 Jul
1994c
24 Apr
1 May
5 Jul
24 Apr-4 Sep
1995c
16 Apr
9 May
20 Jun
12 Apr-22 Sep
1996a-1997a
---
---
---
---
1998a
---
---
---
---
1999a2000a2001a
---
---
---
---
2002
26 Apr
4 May
20 May
18 Apr-29 May
2003c
23 Apr
20 May
26 May
21 Apr-26 May
2004c
11 Apr
24 Apr
10 May
7 Apr-23 Jun
2005c
26 Apr
3 May
13 May
20 Apr-30 May
2006
15 Apr
1 May
8 May
14 Apr-19 May
2007c
17 Apr
2 May
11 May
17 Apr-24 May
2008a
---
---
---
---
2009c
24 Apr
29 Apr
18 May
13 Apr-25 Jun
2010c
24 Apr
30 Apr
21 May
23 Apr-8 Jul
2011c
22 Apr
9 May
27 May
3 Apr-27 Jun
60
Appendix Table 4a. Continued.
Percentile passage dates at Lower Granite Dam
10th
50th
90th
Range
Secesh River
1989
20 Apr
27 Apr
9 Jun
9 Apr-19 Jul
1990
14 Apr
22 Apr
7 Jun
10 Apr-13 Jul
1991
20 Apr
27 Apr
14 Jun
13 Apr-20 Jul
1992
13 Apr
29 Apr
4 Jun
5 Apr-3 Jul
1993
26 Apr
16 May
16 Jun
22 Apr-15 Jul
1994
22 Apr
26 Apr
11 Jul
21 Apr-7 Aug
1995
14 Apr
1 May
24 May
10 Apr-10 Jul
1996
14 Apr
25 Apr
29 May
12 Apr-15 Jul
1997
10 Apr
18 Apr
4 May
4 Apr-11 Jul
1998
8 Apr
24 Apr
28 May
3 Apr-6 Jul
1999
3 Apr
23 Apr
25 May
29 Mar-21 Jun
2000
13 Apr
23 Apr
4 Jun
12 Apr-11 Jul
2001
16 Apr
28 Apr
13 May
6 Apr-13 Jun
2002
13 Apr
21 Apr
17 May
11 Apr-1 Jul
2003
18 Apr
30 Apr
1 Jun
3 Apr-4 Jul
2004
4 Apr
27 Apr
28 May
1 Apr-13 Jun
2005
23 Apr
3 May
26 May
4 Apr-19 Jun
2006
13 Apr
24 Apr
23 May
8 Apr-8 Jun
2007
9 Apr
22 Apr
16 May
5 Apr-23 May
2008a
---
---
---
---
2009
19 Apr
28 Apr
17 May
11 Apr-2 Jun
2010
20 Apr
28 Apr
6 Jun
20 Apr-22 Jun
2011
7 Apr
1 May
7 Jun
3 Apr-27 Jun
Lake Creek
1989
23 Apr
2 May
16 Jun
12 Apr-1 Jul
1990a
---
---
---
---
1991a
---
---
---
---
1992a
---
---
---
---
1993
23 Apr
9 May
22 Jun
22 Apr-25 Jun
1995
17 Apr
10 May
10 Jun
14 Apr-20 Jul
1996
15 Apr
21 Apr
19 May
15 Apr-2 Jun
1997
11 Apr
25 Apr
2 Jul
7 Apr-22 Sep
1998
4 Apr
25 Apr
26 May
2 Apr-16 Jul
1999
20 Apr
26 Apr
27 May
8 Apr-20 Jun
2000
13 Apr
4 May
4 Jun
13 Apr-18 Jul
2001a
---
---
---
---
2002
16 Apr
29 Apr
3 Jun
13 Apr-3 Jun
2003
6 Apr
6 May
4 Jun
6 Apr-20 Jun
2004
14 Apr
25 Apr
28 May
9 Apr-16 Jun
2005
20 Apr
28 Apr
29 May
19 Apr-19 Jun
2006
17 Apr
28 Apr
19 May
17 Apr-19 May
2007
8 Apr
27 Apr
3 May
8 Apr-14 May
2008
30 Apr
7 May
23 May
25 Apr-24 May
2009
23 Apr
3 May
30 May
4 Apr-20 Jun
2010b
---
---
---
---
2011
12 Apr
11 May
16 May
10 Apr-12 Jun
a No parr were tagged the summer prior to this migration year.
b Insufficient numbers detected to estimate timing.
c Includes fish from Chamberlain Creek.
d No fish were tagged in Rush Creek for this migration year.
61
Appendix Table 4b. Accumulated and 2011 passage dates at Lower Granite Dam for
PIT-tagged wild spring/summer Chinook salmon smolts from
streams in Oregon.
Percentile passage dates at Lower Granite Dam
Year
10th
50th
90th
Range
Catherine Creek
1991
1 May
14 May
8 Jun
17 Apr-23 Jun
1992
16 Apr
1 May
21 May
9 Apr-29 Jun
1993
6 May
18 May
5 Jun
29 Apr-26 Jun
1994
25 Apr
11 May
20 May
13 Apr-26 July
1995
1 May
19 May
9 Jun
26 Apr-02 Jul
1996 a
19 Apr
13 May
29 May
14 Apr-14 Jun
1997
8 May
14 May
1 Jun
24 Apr-10 Jun
1998
28 Apr
21 May
28 May
24 Apr-4 Jun
1999
26 Apr
25 May
15 Jun
26 Apr-26 Jun
2000
30 Apr
8 May
23 May
12 Apr-6 Jun
2001
29 Apr
17 May
17 Jun
28 Apr-03 Jul
2002
24 Apr
10 May
18 Jun
15 Apr-01 Jul
2003
26 Apr
10 May
9 Jun
14 Apr-9 Jun
2004
22 Apr
15 May
11 Jun
15 Apr-25 Jun
2005
20 Apr
12 May
23 May
14 Apr-2 Jun
2006
28 Apr
16 May
30 May
26 Apr-6 Jun
2007
19 Apr
29 Apr
17 May
19 Apr-19 May
2008
6 May
7 Jun
02 Jul
30 Apr-02 Jul
2009
24 Apr
13 May
21 May
12 Apr-13 Jun
2010
29 Apr
4 Jun
19 Jun
24 Apr-21 Jun
2011
2 May
9 May
8 Jun
14 Apr-25 Jun
Grande Ronde River (upper)
1989
12 May
6 Jun
19 Jun
27 Apr-22 Jul
1990b
---
---
---
---
1991b
---
---
---
---
1992b
---
---
---
---
1993
5 May
16 May
25 May
23 Apr-20 Jun
1994
28 Apr
23 May
07 Jul
23 Apr-29 Aug
1995
27 Apr
29 May
12 Jun
12 Apr-01 Jul
1996 c
26 Apr
17 May
29 May
19 Apr-6 Jun
1997-2011b
---
---
---
---
Imnaha River (lower)
1989
11 Apr
30 Apr
11 May
4 Apr-5 Jun
1990
10 Apr
18 Apr
9 May
5 Apr-27 May
1991
20 Apr
1 May
13 May
14 Apr-15 May
1992
10 Apr
21 Apr
3 May
6 Apr-21 May
1993-2011b
---
---
---
---
Imnaha River (upper)
1993
24 Apr
14 May
28 May
15 Apr-23 Jun
1994
24 Apr
8 May
9 Jun
20 Apr-11 Aug
1995
13 Apr
2 May
3 Jun
10 Apr-07 Jul
1996
16 Apr
26 Apr
18 May
14 Apr-12 Jun
1997
11 Apr
19 Apr
11 May
3 Apr-2 Jun
1998
11 Apr
28 Apr
13 May
3 Apr-24 May
1999
22 Apr
8 May
26 May
17 Apr-3 Jun
2000
14 Apr
2 May
24 May
12 Apr-16 Jun
2001
21 Apr
30 Apr
16 May
8 Apr-28 May
2002
16 Apr
4 May
17 May
15 Apr-31 May
62
Appendix Table 4b. Continued.
Percentile passage dates at Lower Granite Dam
Year
10th
50th
90th
Range
Imnaha River (upper) (continued)
2003
22 Apr
8 May
26 May
17 Apr-31 May
2004
19 Apr
4 May
22 May
18 Apr-8 Jun
2005
19 Apr
3 May
27 May
5 Apr-11 Jun
2006
12 Apr
29 Apr
15 May
3 Apr-4 Jun
2007
13 Apr
25 Apr
13 May
5 Apr-24 May
2008
17 Apr
6 May
22 May
14 Apr-1 Jun
2009
13 Apr
5 May
20 May
4 Apr-9 Jun
2010
24 Apr
10 May
9 Jun
23 Apr-24 Jun
2011
4 Apr
7 May
1 Jun
1 Apr-16 Jun
Lostine River
1990d
---
---
---
---
1991
29 Apr
14 May
26 May
20 Apr-09 Jul
1992
16 Apr
30 Apr
11 May
12 Apr-2 Jun
1993
23 Apr
3 May
17 May
17 Apr-1 Jun
1994
22 Apr
30 Apr
16 May
19 Apr-7 Jun
1995
12 Apr
2 May
17 May
8 Apr-9 Jun
1996
23 Apr
15 May
7 Jun
17 Apr-19 Jun
1997
17 Apr
28 Apr
16 May
9 Apr-21 May
1998b
---
---
---
---
1999
30 Mar
9 May
27 May
29 Mar-29 May
2000
13 Apr
8 May
25 May
13 Apr-3 Jun
2001
25 Apr
9 May
22 May
10 Apr-12 Jun
2002
11 Apr
21 Apr
13 May
28 Mar-29 May
2003
13 Apr
8 May
26 May
11 Apr-3 Jun
2004
15 Apr
4 May
5 Jun
14 Apr-15 Jun
2005
16 Apr
29 Apr
26 May
5 Apr-18 Jun
2006
14 Apr
26 Apr
16 May
5 Apr-9 Jun
2007
14 Apr
3 May
15 May
5 Apr-21 May
2008
22 Apr
11 May
29 May
10 Apr-14 Jun
2009
13 Apr
28 Apr
15 May
2 Apr-21 May
2010
27 Apr
14 May
6 Jun
24 Apr-17 Jun
2011
9 Apr
5 May
4 Jun
4 Apr-26 Jun
Minam River
1999
8 Apr
28 Apr
25 May
31 Mar-2 Jun
2000
15 Apr
3 May
22 May
10 Apr-29 May
2001
25 Apr
7 May
23 May
8 Apr-12 Jun
2002
17 Apr
3 May
20 May
16 Apr-31 May
2003
17 Apr
13 May
29 May
13 Apr-1 Jun
2004
15 Apr
28 Apr
28 May
8 Apr-31 May
2005
19 Apr
8 May
21 May
8 Apr-8 Jun
2006
13 Apr
8 May
20 May
11 Apr-6 Jun
2007
11 Apr
27 Apr
12 May
4 Apr-22 May
2008
23 Apr
8 May
21 May
17 Apr-11 Jun
2009
24 Apr
13 May
22 May
11 Apr-6 Jun
2010
25 Apr
15 May
5 Jun
23 Apr-16 Jun
2011
17 Apr
12 May
2 Jun
3 Apr-4 Jun
a Includes fish tagged from summer 1995 through spring 1996.
b No parr were tagged the summer prior to this migration year.
c All fish tagged at traps in fall or spring for this migration year.
d Insufficient numbers detected to estimate timing.
63
Appendix Table 5. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,004 wild Chinook
salmon from Bear Valley Creek released 20-22 July 2010. Release
sites were 629-635 km above Lower Granite Dam.
Bear Valley Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
4 Apr
1
3
7 Apr
2
6
11 Apr
1
3
17 Apr
1
3
19 Apr
2
21 Apr
1
22 Apr
1
23 Apr
1
3
25 Apr
26 Apr
1
27 Apr
2
4
28 Apr
2
4
2
29 Apr
2
4
30 Apr
3
6
1
1 May
1
2
3
2 May
3
6
1
3 May
2
4
1
4 May
1
2
2
5 May
2
5
1
1
1
1
6 May
1
2
1
1
1
7 May
2
5
1
8 May
1
1
9 May
5
11
1
1
10 May
2
4
3
1
11 May
5
12
12 May
2
13 May
3
8
1
2
1
14 May
1
3
1
15 May
1
4
1
16 May
1
17 May
2
8
1
1
18 May
1
3
1
19 May
1
2
1
20 May
1
2
1
1
21 May
2
5
1
22 May
1
23 May
1
3
1
1
1
24 May
25 May
1
26 May
27 May
1
3
28 May
1
29 May
30 May
1
2
1
64
Appendix Table 5. Continued.
Bear Valley Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
1 Jun
1
3
2 Jun
1
3 Jun
1
4 Jun
5 Jun
6 Jun
2
6
7 Jun
1
8 Jun
9 Jun
1
4
11 Jun
12 Jun
13 Jun
14 Jun
1
20 Jun
Total
59
145
24
15
8
6
5
0
65
Appendix Table 6. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,025 wild Chinook
salmon from Elk Creek released 22-23 July 2010. Release sites
were 634-638 km above Lower Granite Dam.
Elk Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
5 Apr
1
3
6 Apr
1
3
7 Apr
1
3
8 Apr
1
3
10 Apr
1
3
1
13 Apr
1
3
15 Apr
1
3
1
17 Apr
3
8
1
1
18 Apr
1
1
19 Apr
1
20 Apr
1
21 Apr
22 Apr
2
5
1
23 Apr
2
1
25 Apr
2
5
1
26 Apr
2
5
1
27 Apr
2
4
28 Apr
1
2
2
29 Apr
1
2
1
1
30 Apr
4
8
1
1 May
5
11
1
2 May
2
4
3 May
3
7
4
1
4 May
4
9
2
1
5 May
1
2
2
6 May
1
2
1
7 May
1
2
1
8 May
3
7
4
2
9 May
1
2
1
1
10 May
2
4
1
11 May
2
5
1
1
12 May
2
4
2
13 May
2
5
2
1
14 May
2
5
1
1
15 May
1
4
1
2
1
16 May
3
11
1
1
17 May
1
18 May
2
19 May
20 May
1
1
21 May
1
3
2
22 May
1
3
2
1
66
Appendix Table 6. Continued.
Elk Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
23 May
1
3
1
1
24 May
1
1
25 May
2
6
26 May
1
27 May
1
3
1
28 May
1
2
2
29 May
1
30 May
31 May
1
1 Jun
3 Jun
4 Jun
1
3
1
5 Jun
1
6 Jun
1
7 Jun
8 Jun
2
8
9 Jun
11 Jun
1
2
12 Jun
21 Jun
1
2
04 Jul
08 Jul
Totals
71
180
42
19
11
3
4
0
67
Appendix Table 7. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,030 wild Chinook
salmon from Marsh Creek released 25-26 July 2010. Release sites
were 632-635 km above Lower Granite Dam.
Marsh Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
4 Apr
1
3
5 Apr
2
6
6 Apr
1
3
8 Apr
1
3
9 Apr
2
6
10 Apr
1
3
1
13 Apr
1
3
14 Apr
3
8
15 Apr
1
3
1
17 Apr
1
19 Apr
1
3
1
20 Apr
1
21 Apr
2
22 Apr
1
3
23 Apr
1
3
24 Apr
2
25 Apr
1
2
1
26 Apr
1
2
1
27Apr
2
4
1
28 Apr
2
4
2
29 Apr
4
8
1
30 Apr
4
8
3
1
1 May
2
4
1
1
2 May
1
2
1
3 May
1
1
4 May
7
16
2
5 May
2
5
1
1
6 May
1
2
1
2
7 May
1
2
2
8 May
3
7
1
9 May
4
9
1
1
10 May
6
13
1
11 May
9
21
2
12 May
1
2
3
13 May
6
15
1
2
14 May
4
10
1
2
15 May
3
11
1
3
1
16 May
6
23
3
1
1
17 May
1
4
3
2
18 May
1
4
19 May
2
5
1
1
1
1
20 May
1
2
1
68
Appendix Table 7. Continued.
Marsh Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
21 May
1
1
22 May
23 May
1
3
1
24 May
1
25 May
1
26 May
1
27 May
1
28 May
29 May
1
30 May
1
1
31 May
3 Jun
4 Jun
6 Jun
8 Jun
1
4
9 Jun
10 Jun
11 Jun
1
14 Jun
1
Totals
91
232
42
31
5
5
6
69
Appendix Table 8. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 141 wild Chinook
salmon from Cape Horn Creek released 27 July 2010. Release site
was 630 km above Lower Granite Dam.
Cape Horn Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
4 Apr
1
3
7 Apr
1
3
17 Apr
1
3
25 Apr
1
27 Apr
1
2
28 Apr
29 Apr
30 Apr
1 May
2 May
3 May
4 May
1
5 May
6 May
1
2
7 May
8 May
9 May
1
2
10 May
1
2
11 May
1
2
12 May
1
14 May
1
3
16 May
17 May
18 May
19 May
1
20 May
21 May
22 May
23 May
24 May
25 May
26 May
27 May
28 May
1 Jun
2 Jun
3 Jun
4 Jun
5 Jun
7 Jun
20 Jun
Totals
9
22
2
2
0
0
0
0
70
Appendix Table 9. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 671 wild Chinook
salmon from Sulphur Creek released 30-31 August 2010. Fish were
released 604-606 km above Lower Granite Dam.
Sulphur Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
4 Apr
1
3
5 Apr
1
8 Apr
1
13 Apr
1
3
14 Apr
1
3
16 Apr
1
1
18 Apr
1
3
1
19 Apr
1
20 Apr
1
3
21 Apr
1
3
22 Apr
1
3
23 Apr
1
3
24 Apr
3
8
1
25 Apr
1
2
1
1
26 Apr
27 Apr
1
2
1
28 Apr
29 Apr
3
6
1
30 Apr
3
6
1 May
2
4
2 May
1
2
3 May
1
4 May
2
5 May
4
9
6 May
1
2
1
7 May
4
10
2
8 May
1
2
9 May
2
4
2
1
10 May
1
2
11 May
2
5
12 May
1
2
1
13 May
4
10
1
1
14 May
3
8
4
1
16 May
1
4
2
2
17 May
1
4
2
18 May
1
2
19 May
2
20 May
1
21 May
1
22 May
1
3
23 May
1
71
Appendix Table 9. Continued.
Sulphur Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
25 May
1
26 May
29 May
2
4 Jun
1
3
6 Jun
8 Jun
11 Jun
18 Jun
Totals
49
121
18
18
6
1
2
0
72
Appendix Table 10. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 2,513 wild Chinook
salmon from Valley Creek released 02-04 August 2010. Release
sites were 743-750 km above Lower Granite Dam.
Valley Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
6 Apr
1
3
7 Apr
1
3
10 Apr
1
3
13 Apr
1
3
1
17 Apr
1
1
18 Apr
2
5
19 Apr
1
21 Apr
22 Apr
2
23 Apr
2
1
24 Apr
25 Apr
26 Apr
1
2
1
27 Apr
1
2
28 Apr
29 Apr
4
8
30 Apr
1
2
1 May
1
1
2 May
6
13
2
1
3 May
1
2
4 May
5 May
3
7
1
1
6 May
2
5
1
7 May
8 May
1
9 May
1
2
10 May
2
4
2
1
11 May
4
9
12 May
3
7
13 May
4
10
2
14 May
7
18
2
1
1
15 May
2
7
1
3
1
16 May
3
11
1
1
17 May
3
12
2
1
1
18 May
1
3
3
3
19 May
1
2
2
20 May
1
2
1
1
1
21 May
1
2
22 May
2
6
4
1
23 May
1
1
24 May
1
3
3
25 May
2
6
1
1
26 May
3
11
1
27 May
1
3
1
73
Appendix Table 10. Continued.
Valley Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
28 May
1
2
1
29 May
1
3
1
1
1
1
30 May
1
31 May
1
3
1
1 Jun
1
1
2 Jun
3
11
2
3 Jun
1
1
4 Jun
1
3
5 Jun
1
2
10 Jun
11 Jun
2
12 Jun
1
2
13 Jun
1
16 Jun
1
2
17 Jun
1
1
18 Jun
22 Jun
23 Jun
24 Jun
25 Jun
29 Jun
1
Totals
75
201
39
32
8
8
4
0
74
Appendix Table 11. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 506 wild Chinook
salmon from Camas Creek released 06-07 August 2010. Release
sites were 524-526 km above Lower Granite Dam. Plus 1 detected
at the trawl on 3 June 2011.
Camas Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
7 Apr
1
3
9 Apr
1
3
1
16 Apr
1
17 Apr
1
21 Apr
1
23 Apr
1
3
24 Apr
1
27 Apr
1
2
1 May
1
2
2 May
1
2
3 May
1
2
1
4 May
1
2
1
6 May
2
5
7 May
3
7
1
1
8 May
1
2
10 May
3
6
1
1
11 May
6
14
1
12 May
5
11
1
13 May
3
8
1
14 May
4
10
2
15 May
6
22
16 May
2
8
17 May
6
24
4
4
18 May
2
6
1
19 May
1
2
2
2
20 May
5
12
2
1
1
21 May
2
5
3
1
1
22 May
4
1
23 May
2
5
2
24 May
1
25 May
2
6
1
29 May
1
1
31 May
1
1 Jun
1
3
2 Jun
1
6 Jun
1
7 Jun
1
4
8 Jun
1
12 Jun
1
2
1
16 Jun
1
Totals
66
182
26
21
4
1
3
0
75
Appendix Table 12. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,017 wild Chinook
salmon from Herd Creek released 09-10 August 2010. Fish were
released 699-701 km above Lower Granite Dam.
Herd Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
5 Apr
1
3
6 Apr
1
3
7 Apr
1
3
9 Apr
3
8
11 Apr
1
13 Apr
1
3
14 Apr
1
3
16 Apr
1
19 Apr
2
5
1
1
1
20 Apr
1
2
22 Apr
1
23 Apr
1
25 Apr
1
1
26 Apr
1
2
1
1
28 Apr
2
4
1
1
29 Apr
1
1
30 Apr
2
4
1 May
1
2 May
4
8
4 May
2
5
2
6 May
2
5
2
7 May
2
5
1
1
8 May
2
5
1
9 May
2
4
1
10 May
7
15
11 May
7
16
12 May
3
7
4
13 May
4
10
2
1
14 May
4
10
2
15 May
3
11
1
16 May
5
19
1
17 May
6
24
1
3
18 May
2
6
2
3
19 May
1
2
1
20 May
2
21 May
2
5
1
1
1
22 May
1
23 May
1
24 May
2
6
1
27 May
2
29 May
1
1
31 May
1
3
2 Jun
1
12 Jun
1
Totals
76
204
27
20
7
2
6
0
76
Appendix Table 13. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 828 wild Chinook
salmon from Loon Creek released 12-13 August 2010. Release
sites were 550-553 km above Lower Granite Dam. Plus 1 detected
at the trawl on 29 May 2011.
Loon Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
11 Apr
1
3
17 Apr
1
3
18 Apr
2
5
25 Apr
1
2
1
27 Apr
2
4
2
28 Apr
29 Apr
1
30 Apr
2
4
1 May
2 May
2
4
1
3 May
2
4
4 May
5 May
1
6 May
2
1
7 May
1
2
1
8 May
3
7
9 May
1
2
1
10 May
5
11
3
1
11 May
9
21
1
1
12 May
6
13
2
13 May
7
18
3
14 May
12
31
1
2
15 May
4
14
2
4
1
16 May
5
19
2
3
17 May
3
12
4
2
2
18 May
4
12
5
2
1
19 May
1
2
3
3
1
20 May
2
5
1
3
21 May
1
3
1
22 May
4
4
1
2
23 May
2
24 May
1
3
2
1
25 May
1
26 May
2
1
27 May
1
3
28 May
1
2
29 May
1
30 May
1
2
31 May
2 Jun
1
3 Jun
1
4 Jun
1
5 Jun
1
2
14 Jun
1
Totals
82
214
39
31
10
3
7
0
77
Appendix Table 14. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,145 wild Chinook
salmon from Big Creek (upper) released 16-17 August 2010.
Release sites were 535-538 km above Lower Granite Dam.
Big Creek (upper)
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
25 Apr
1
2
27 Apr
1
2
28 Apr
1
2
29 Apr
1
30 Apr
1 May
2
1
2 May
3 May
1
2
4 May
5 May
1
2
6 May
1
2
7 May
1
2
1
8 May
1
1
9 May
1
10 May
1
2
1
11 May
3
7
1
12 May
6
13
13 May
3
8
5
1
14 May
7
18
1
1
15 May
1
4
1
16 May
1
4
2
3
17 May
4
16
1
2
18 May
2
6
3
2
1
2
19 May
2
5
1
1
1
20 May
2
5
2
1
2
21 May
6
15
2
1
1
22 May
1
3
1
3
1
2
23 May
1
3
1
1
24 May
1
3
2
1
25 May
26 May
27 May
1
28 May
29 May
1
30 May
31 May
1
3
1 Jun
3
10
9 Jun
10 Jun
11 Jun
13 Jun
16 Jun
26 Jun
1
Totals
52
138
27
19
8
4
4
0
78
Appendix Table 15. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,413 wild Chinook
salmon from Big Creek (lower) released 2-3 September 2010.
Release sites were 489-491 km above Lower Granite Dam.
Big Creek (lower)
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
6 Apr
1
3
7 Apr
1
3
1
8 Apr
5
14
9 Apr
6
17
10 Apr
2
6
1
12 Apr
1
3
1
13 Apr
1
3
1
14 Apr
3
8
15 Apr
3
8
16 Apr
2
5
1
17 Apr
1
3
1
18 Apr
2
2
19 Apr
3
8
2
1
1
20 Apr
1
1
21 Apr
2
5
1
22 Apr
2
5
1
23 Apr
2
5
1
24 Apr
1
3
25 Apr
3
7
2
26 Apr
1
2
1
27 Apr
5
11
1
28 Apr
1
2
1
29 Apr
6
12
1
30 Apr
8
17
2
1 May
6
13
2
2 May
4
8
4
2
3 May
4
9
4 May
1
2
3
1
5 May
2
5
5
6 May
5
12
2
1
1
7 May
4
10
1
8 May
3
7
5
1
1
9 May
8
18
1
10 May
5
11
1
4
1
11 May
7
16
1
1
12 May
9
20
5
2
1
1
13 May
5
13
4
1
14 May
9
23
5
1
15 May
6
7
1
1
16 May
1
4
2
4
1
17 May
2
8
3
2
2
18 May
1
5
3
19 May
3
1
20 May
2
1
2
1
79
Appendix Table 15. Continued.
Big Creek (lower)
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
21 May
1
3
1
1
1
2
22 May
1
1
23 May
2
24 May
2
1
25 May
26 May
27 May
1
31 May
1
10 Jun
1
Totals
136
328
70
47
14
8
8
1
80
Appendix Table 16. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,424 wild Chinook
salmon from West Fork Chamberlain/Chamberlain Creeks released
24-26 August 2010. Release sites were 437-439 km above Lower
Granite Dam.
West Fork Chamberlain and Chamberlain Creeks
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
3 Apr
1
3
4 Apr
1
3
8 Apr
1
3
9 Apr
1
3
10 Apr
1
13 Apr
1
3
19 Apr
2
5
1
20 Apr
2
21 Apr
1
3
22 Apr
1
3
23 Apr
1
3
24 Apr
1
3
25 Apr
1
2
1
1
26 Apr
1
2
1
27 Apr
6
13
1
28 Apr
3
6
29 Apr
2
4
3
1
30 Apr
5
11
2
1 May
3
6
1
2
1
2 May
4
8
1
2
3 May
1
1
4 May
1
2
1
1
5 May
5
11
1
2
6 May
2
5
2
7 May
6
14
8 May
1
9 May
5
11
2
2
1
10 May
3
6
1
1
1
11 May
8
19
1
1
12 May
3
7
3
2
13 May
5
13
6
2
14 May
5
13
2
1
1
1
15 May
3
11
2
3
16 May
4
15
3
17 May
1
4
2
1
1
18 May
1
1
1
19 May
1
20 May
1
81
Appendix Table 16. Continued.
West Fork Chamberlain and Chamberlain Creeks
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
21 May
1
3
22 May
2
23 May
2
5
1
1
24 May
1
3
2
25 May
26 May
1
27 May
1
3
1
2
29 May
30 May
3
7
1 Jun
1
3
1
1
3 Jun
6 Jun
7 Jun
1
10 Jun
12 Jun
1
2
2
13 Jun
1
2
2
14 Jun
1
16 Jun
1
2
18 Jun
1
26 Jun
1
27 Jun
2
7
08 Jul
Totals
101
253
42
35
8
7
3
1
82
Appendix Table 17. Detections during 2011 of PIT-tagged smolts by date at four Snake
River dams and three Columbia River dams for 1,034 wild Chinook
salmon from South Fork Salmon River released 19-20 August 2010.
Release sites were 467-469 km above Lower Granite Dam.
South Fork Salmon River
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
3 Apr
1
3
4 Apr
1
3
6 Apr
1
3
7 Apr
5
14
9 Apr
3
8
10 Apr
1
11 Apr
2
5
12 Apr
1
3
2
13 Apr
1
3
15 Apr
1
16 Apr
2
5
1
17 Apr
1
18 Apr
1
19 Apr
1
20 Apr
1
3
1
21 Apr
2
5
22 Apr
1
23 Apr
1
24 Apr
1
3
1
1
25 Apr
26 Apr
1
2
1
27 Apr
1
2
1
28 Apr
1
2
29 Apr
2
4
1
1
30 Apr
6
13
2
1
1 May
3
6
2
1
2 May
6
13
3 May
1
2
3
4 May
2
5
2
5 May
1
2
3
1
6 May
1
2
1
1
7 May
1
8 May
1
1
1
9 May
2
4
1
10 May
3
6
1
11May
1
12 May
4
9
4
13 May
1
3
4
1
14 May
1
3
2
15 May
5
18
2
16 May
2
8
1
3
1
17 May
1
4
4
2
18 May
2
6
1
1
1
19 May
2
5
1
1
20 May
1
2
83
Appendix Table 17. Continued.
South Fork Salmon River
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
21 May
1
3
1
22 May
3
9
2
23 May
3
8
1
24 May
2
25 May
1
1
26 May
1
4
27 May
1
28 May
29 May
1
3
1
1
1 Jun
1
1
2 Jun
3 Jun
4 Jun
5 Jun
1
2
7 Jun
1
8 Jun
1
9 Jun
10 Jun
Totals
80
208
38
35
4
3
5
0
84
Appendix Table 18. Detections during 2011 of PIT-tagged smolts by date at three Snake
River dams and three Columbia River dams for 1,001 wild Chinook
salmon from Secesh River released 27-28 August 2010. Release
sites were 429-431 km above Lower Granite Dam.
Secesh River
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
3 Apr
1
3
4 Apr
1
3
5 Apr
1
3
6 Apr
2
6
7 Apr
2
6
1
10 Apr
2
6
11 Apr
2
5
1
13 Apr
2
5
2
14 Apr
1
15 Apr
1
3
1
1
16 Apr
1
3
17 Apr
1
1
19 Apr
1
1
20 Apr
2
5
21 Apr
1
3
3
22 Apr
1
3
1
23 Apr
1
1
24 Apr
1
3
1
25 Apr
3
7
26 Apr
1
2
1
27 Apr
3
7
28 Apr
5
10
29 Apr
2
4
1
30 Apr
1
2
2
2
1 May
2 May
2
4
1
1
3 May
3
7
1
1
4 May
1
2
1
5 May
1
2
6 May
1
7 May
1
1
8 May
1
2
1
1
9 May
2
4
1
1
10 May
1
2
11 May
5
12
12 May
3
7
3
13 May
4
1
15 May
16 May
1
4
1
17 May
1
4
18 May
1
3
19 May
1
2
20 May
1
2
1
85
Appendix Table 18. Continued.
Secesh River
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
21 May
22 May
1
23 May
2
6
1
24 May
1
25 May
2
27 May
1
3
29 May
1
3
30 May
1
31 May
1 Jun
1
3
1
1
2 Jun
1
4 Jun
1
3
1
1
5 Jun
1
6 Jun
7 Jun
2
8
8 Jun
9 Jun
10 Jun
1
2
11 Jun
1
14 Jun
1
16 Jun
1
26 Jun
1
4
27 Jun
1
4
Totals
68
177
31
19
8
4
5
0
86
Appendix Table 19. Detections during 2011 of PIT-tagged smolts by date at three Snake
River dams and three Columbia River dams for 458 wild Chinook
salmon from Lake Creek released 30 August 2010. Release site
was 451 km above Lower Granite Dam.
Lake Creek
Detection
date
Lower Granite
First
Detection
Expanded
Little
Goose
Lower
Monumental
Ice
Harbor
McNary
John Day
Bonneville
10 Apr
1
3
12 Apr
1
3
20 Apr
1
3
28 Apr
1
2
30 Apr
2
4
2
1 May
1
2 May
1
2
4 May
1
5 May
1
6 May
1
2
7 May
8 May
9 May
1
2
10 May
2
4
11 May
1
2
1
12 May
1
2
1
13 May
2
5
14 May
1
3
2
15 May
1
4
1
16 May
2
8
17 May
1
18 May
1
1
19 May
20 May
1
1
1
21 May
22 May
23 May
1
24 May
2
25 May
26 May
27 May
28 May
29 May
1
30 May
31 May
1 Jun
3 Jun
5 Jun
1
12 Jun
1
2
16 Jun
1
25 Jun
1
Totals
19
49
12
13
0
1
0
0
87
Appendix Table 20. Daily and expanded detections (with estimated detection
efficiencies) of PIT-tagged wild spring/summer Chinook salmon
smolts from Idaho and Oregon at Lower Granite Dam during 2011,
with associated river flows (kcfs), spill (kcfs), and water
temperatures (°C) at the dam.
Idaho only
Idaho and Oregon
Date
Average
flow (kcfs)
Average
spill (kcfs)
water
temperature
Number of
detections
Expanded
detections
Number of
detections
Expanded
detections
(est.det.eff.)
1 Apr
123.9
50.6
7.3
0
0
1
6 (0.155)
2 Apr
130.6
57.4
7.3
0
0
1
4 (0.273)
3 Apr
137.8
64.3
7.5
3
10
6
20 (0.293)
4 Apr
124.3
51.2
7.1
7
22
10
32 (0.317)
5 Apr
138.6
65.2
6.8
5
14
6
17 (0.345)
6 Apr
137.4
64.5
6.9
8
24
9
27 (0.338)
7 Apr
127.3
54.8
7.0
15
43
18
52 (0.347)
8 Apr
117.0
44.5
6.8
8
22
9
25 (0.367)
9 Apr
113.2
42.4
6.9
16
44
19
53 (0.361)
10 Apr
108.9
40.3
7.3
8
22
10
28 (0.362)
11 Apr
105.3
33.2
7.8
6
16
6
16 (0.369)
12 Apr
106.7
34.5
8.0
3
8
3
8 (0.378)
13 Apr
101.0
29.0
8.1
10
27
11
30 (0.369)
14 Apr
98.8
26.9
7.9
8
22
10
27 (0.367)
15 Apr
89.9
21.5
8.0
6
16
9
23 (0.387)
16 Apr
82.6
20.1
8.0
5
13
6
15 (0.388)
17 Apr
89.4
21.1
8.3
7
18
10
25 (0.395)
18 Apr
96.6
25.5
8.8
5
13
5
13 (0.397)
19 Apr
104.8
33.0
9.0
8
20
8
20 (0.395)
20 Apr
106.8
35.9
8.6
5
13
7
18 (0.385)
21 Apr
109.8
37.7
8.6
7
18
10
26 (0.382)
22 Apr
104.9
38.4
8.7
8
21
9
24 (0.375)
23 Apr
102.0
30.3
9.0
7
19
8
22 (0.372)
24 Apr
98.2
26.4
9.0
7
18
8
21 (0.387)
25 Apr
93.8
25.1
9.2
13
31
15
36 (0.419)
26 Apr
95.8
27.0
9.5
9
21
11
25 (0.437)
27 Apr
96.4
24.6
9.7
28
63
34
76 (0.446)
28 Apr
93.6
21.7
9.8
19
39
25
51 (0.493)
29 Apr
92.0
20.2
9.8
26
52
34
68 (0.502)
30 Apr
90.3
20.2
9.8
41
87
44
93 (0.471)
1 May
88.5
20.2
9.5
23
49
29
62 (0.470)
2 May
84.8
20.1
9.5
37
78
44
93 (0.473)
3 May
86.0
20.2
9.6
18
39
21
46 (0.461)
4 May
87.1
20.1
9.9
20
47
26
60 (0.430)
5 May
90.0
20.1
10.2
21
48
28
64 (0.440)
6 May
86.0
20.1
10.5
20
47
29
68 (0.424)
7 May
87.3
20.2
10.9
25
60
34
81 (0.419)
8 May
95.3
23.8
11.0
17
40
22
52 (0.426)
9 May
101.7
24.4
11.0
34
76
44
99 (0.445)
10 May
101.1
20.1
10.9
44
95
54
116 (0.464)
11 May
99.0
20.0
10.6
69
160
77
178 (0.432)
12 May
104.8
22.2
10.8
47
103
52
114 (0.458)
13 May
119.8
34.9
11.4
49
124
54
137 (0.394)
88
Appendix Table 20. Continued.
Idaho only
Idaho and Oregon
Date
Average
flow (kcfs)
Average
spill (kcfs)
water
temperature
Number of
detections
Expanded
detections
Number of
detections
Expanded
detections
(est.det.eff.)
14 May
140.2
49.9
11.4
61
155
65
165 (0.393)
15 May
175.3
84.0
11.7
30
108
34
123 (0.277)
16 May
203.4
111.3
11.0
36
137
40
153 (0.262)
17 May
188.7
97.5
9.9
31
123
31
123 (0.252)
18 May
173.0
83.7
9.6
15
44
19
56 (0.342)
19 May
158.6
64.7
10.0
11
25
12
28 (0.435)
20 May
158.7
55.7
10.9
14
33
16
37 (0.428)
21 May
163.2
60.3
11.9
17
44
21
54 (0.390)
22 May
171.0
61.2
12.1
10
29
11
32 (0.339)
23 May
182.6
74.8
11.9
10
27
14
37 (0.375)
24 May
187.6
77.2
11.6
6
17
11
30 (0.363)
25 May
196.1
85.2
11.0
6
19
6
19 (0.315)
26 May
200.0
95.8
10.6
4
15
7
26 (0.269)
27 May
201.7
91.2
10.8
6
17
10
29 (0.345)
28 May
182.3
72.1
10.6
3
7
3
7 (0.409)
29 May
171.7
61.6
10.7
3
8
5
13 (0.378)
30 May
162.1
51.7
11.2
5
12
6
14 (0.415)
31 May
157.2
51.0
11.4
3
9
5
15 (0.344)
1 Jun
154.5
44.3
11.7
7
23
9
30 (0.304)
2 Jun
154.3
45.4
11.6
3
11
4
14 (0.280)
3 Jun
169.6
59.6
11.3
0
0
2
6 (0.325)
4 Jun
160.4
51.0
11.2
4
12
8
23 (0.343)
5 Jun
158.2
50.1
11.7
3
7
5
12 (0.431)
6 Jun
161.8
52.7
12.2
2
6
4
12 (0.329)
7 Jun
188.1
77.6
12.4
3
11
4
15 (0.262)
8 Jun
211.2
99.5
11.9
3
12
5
20 (0.254)
9 Jun
206.5
97.1
11.2
1
4
2
7 (0.271)
10 Jun
197.0
86.4
11.0
1
2
1
2 (0.408)
11 Jun
182.6
72.0
11.3
2
5
3
7 (0.410)
12 Jun
178.8
70.2
11.9
3
7
4
9 (0.449)
13 Jun
183.2
72.5
12.5
1
2
1
2 (0.459)
14 Jun
188.9
77.9
12.6
0
0
0
0
15 Jun
189.4
78.5
12.5
0
0
0
0
16 Jun
184.5
74.5
12.4
2
4
4
9 (0.454)
17 Jun
173.4
63.3
12.0
0
0
1
2 (0.454)
18 Jun
158.7
50.3
12.2
0
0
1
2 (0.487)
19 Jun
154.2
44.7
12.4
0
0
0
0
20 Jun
161.8
51.7
12.4
0
0
0
0
21 Jun
158.6
48.0
12.4
1
2
1
2 (0.420)
22 Jun
167.4
56.5
13.0
0
0
0
0
23 Jun
181.6
70.2
13.7
0
0
0
0
24 Jun
191.6
80.2
13.5
0
0
0
0
25 Jun
182.8
71.7
13.0
0
0
1
2 (0.468)
26 Jun
172.6
62.5
13.0
1
4
2
7 (0.268)
27 Jun
163.6
53.3
13.3
3
11
3
11 (0.269)
28 Jun
159.1
48.6
13.5
0
0
0
0
29 Jun
162.1
51.6
14.0
0
0
0
0
30 Jun
171.8
73.9
14.3
0
0
0
0
89
Appendix Table 21. Daily first-time detections of PIT-tagged wild spring/summer
Chinook salmon smolts from Idaho at Little Goose Dam during
2011, with associated river flows (kcfs), spill (kcfs), and water
temperatures (°C) at the dam.
Little Goose Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
5 Apr
129.7
37.8
7.6
1
7 Apr
121.8
36.5
6.9
2
8 Apr
111.4
33.5
7.1
1
9 Apr
108.5
35.0
7.4
1
10 Apr
107.0
35.5
7.2
5
11 Apr
99.4
29.9
7.2
2
12 Apr
104.2
31.1
7.4
1
13 Apr
98.3
29.4
7.7
4
15 Apr
88.3
26.5
8.1
4
16 Apr
79.1
23.8
8.2
4
17 Apr
87.5
26.3
8.4
7
18 Apr
92.9
27.8
8.4
5
19 Apr
102.6
30.7
8.4
11
20 Apr
102.0
30.6
8.4
5
21 Apr
105.6
31.7
8.9
6
22 Apr
102.4
30.6
8.8
3
23 Apr
97.1
29.0
8.6
8
24 Apr
95.6
28.7
8.9
5
25 Apr
90.7
27.3
9.0
3
26 Apr
93.7
28.2
9.2
6
27 Apr
91.7
27.5
9.1
6
28 Apr
91.1
27.4
9.3
3
29 Apr
88.3
26.5
9.5
8
30 Apr
87.2
26.2
9.8
15
1 May
86.6
26.0
9.8
15
2 May
79.9
23.9
10.0
9
3 May
83.4
25.0
10.0
8
4 May
85.7
25.6
9.7
17
5 May
86.3
25.8
9.8
16
6 May
84.9
25.4
10.0
11
7 May
84.2
25.3
10.4
10
8 May
91.4
27.4
10.5
15
9 May
98.7
29.6
10.8
12
10 May
96.8
38.8
11.2
10
11 May
97.7
29.2
11.3
9
12 May
101.8
32.7
11.5
31
13 May
113.8
41.7
11.2
35
14 May
134.2
62.8
11.1
9
15 May
167.7
97.0
11.8
15
16 May
195.4
124.7
11.7
12
90
Appendix Table 21. Continued.
Little Goose Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
17 May
183.4
112.6
11.4
28
18 May
164.3
93.1
10.7
20
19 May
152.6
79.0
10.2
17
20 May
147.0
104.4
10.3
10
21 May
155.9
82.5
11.0
10
22 May
163.0
91.7
11.8
9
23 May
173.2
98.7
12.4
7
24 May
174.1
151.1
12.4
1
25 May
178.4
172.6
12.1
0
26 May
182.7
177.2
11.5
0
28 May
167.3
161.6
11.1
0
29 May
158.7
153.2
11.2
0
30 May
148.2
142.7
11.1
0
31 May
142.5
136.9
11.3
0
1 Jun
142.9
105.2
11.6
1
2 Jun
146.2
56.3
11.5
5
3 Jun
161.6
71.5
11.6
1
4 Jun
152.8
64.8
11.7
1
5 Jun
149.0
63.2
11.5
2
6 Jun
151.7
61.5
11.6
1
7 Jun
177.1
87.1
12.1
2
8 Jun
200.8
111.4
12.5
0
9 Jun
195.0
105.3
12.1
0
10 Jun
188.6
98.7
11.6
1
11 Jun
173.1
83.1
11.2
3
12 Jun
169.0
78.8
11.5
2
14 Jun
180.0
91.2
12.3
2
16 Jun
174.0
83.4
12.5
1
17 Jun
166.2
75.8
12.3
1
18 Jun
149.2
59.0
12.3
1
25 Jun
173.3
63.8
14.0
1
26 Jun
159.4
50.5
13.5
2
29 Jun
152.2
47.1
13.9
1
91
Appendix Table 22. Daily first-time detections of PIT-tagged wild spring/summer
Chinook salmon smolts from Idaho at Lower Monumental Dam
during 2011, with associated river flows (kcfs), spill (kcfs), and
water temperatures (°C) at the dam.
Lower Monumental Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
12 Apr
108.6
26.2
7.5
2
14 Apr
98.3
27.0
7.7
1
15 Apr
91.7
26.9
8.0
1
16 Apr
82.2
27.9
8.3
1
17 Apr
89.3
27.9
8.5
2
18 Apr
96.1
27.9
8.5
3
19 Apr
106.1
28.2
8.5
4
20 Apr
104.7
29.7
8.5
3
22 Apr
104.9
30.0
8.9
5
23 Apr
99.5
29.5
9.1
2
24 Apr
97.3
28.3
9.1
2
25 Apr
92.8
28.1
9.1
6
26 Apr
95.8
28.5
9.1
3
28 Apr
94.1
29.8
9.4
4
29 Apr
90.9
29.9
9.3
4
30 Apr
90.5
29.7
9.5
4
1 May
88.3
29.6
9.8
6
2 May
81.1
29.7
10.1
5
3 May
83.4
29.8
10.1
8
4 May
88.8
29.9
10.1
2
5 May
88.5
29.9
10.3
4
6 May
87.2
29.9
10.2
9
7 May
84.8
29.7
10.1
3
8 May
92.8
29.6
10.3
3
9 May
101.9
27.8
10.6
3
10 May
100.0
28.1
10.8
11
11 May
101.0
27.9
11.2
4
12 May
103.6
27.1
11.5
5
13 May
116.3
27.0
11.7
12
14 May
139.0
28.7
11.6
23
15 May
173.5
57.9
11.4
25
16 May
209.7
93.2
11.8
22
17 May
198.7
83.5
11.8
21
18 May
173.2
64.7
11.5
23
19 May
160.6
48.9
10.8
12
20 May
155.4
46.9
10.5
7
21 May
162.2
55.8
10.7
9
22 May
169.9
54.9
11.2
21
92
Appendix Table 22. Continued.
Lower Monumental Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
23 May
180.8
64.3
12.0
10
24 May
189.2
72.6
12.4
18
25 May
193.5
76.7
12.4
6
26 May
200.2
83.8
12.0
3
27 May
206.8
91.9
11.4
6
28 May
184.4
68.9
11.1
2
29 May
171.1
55.4
11.3
8
30 May
158.4
44.6
11.3
2
31 May
151.7
58.2
11.3
1
1 Jun
154.1
40.8
11.7
3
2 Jun
152.0
40.7
12.0
2
4 Jun
158.2
44.0
12.2
2
5 Jun
155.0
43.0
12.3
1
8 Jun
215.2
104.0
12.7
2
9 Jun
211.2
96.9
12.8
1
12 Jun
177.2
60.2
11.8
2
13 Jun
178.3
61.3
12.0
2
16 Jun
180.9
64.6
13.0
1
93
Appendix Table 23. Daily first-time detections of PIT-tagged wild spring/summer
Chinook salmon smolts from Idaho at Ice Harbor Dam during 2011,
with associated river flows (kcfs), spill (kcfs), and water
temperatures (°C) at the dam.
Ice Harbor Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
17 Apr
90.4
61.4
8.4
1
23 Apr
101.6
65.6
8.9
1
29 Apr
91.9
27.4
9.4
2
1 May
90.5
61.5
9.6
1
4 May
92.4
39.7
10.1
2
5 May
89.8
27.1
10.4
2
6 May
87.1
49.9
10.6
1
8 May
94.3
41.7
10.6
4
9 May
104.7
36.0
10.6
3
10 May
99.3
34.7
10.8
3
11 May
102.9
34.1
11.2
1
12 May
104.9
54.1
11.5
1
13 May
117.7
67.6
11.9
2
14 May
143.2
72.0
12.2
3
15 May
175.2
93.6
12.1
1
16 May
213.8
131.0
11.8
6
17 May
202.1
120.8
12.0
5
18 May
178.7
97.0
12.1
10
19 May
166.9
87.2
12.0
4
20 May
160.9
82.7
11.4
11
21 May
168.6
93.4
11.1
6
22 May
174.3
92.5
11.2
3
23 May
186.9
103.3
11.6
3
24 May
191.9
108.6
12.3
3
25 May
198.4
114.9
12.7
3
26 May
204.2
121.5
12.6
1
27 May
209.2
127.6
12.2
3
28 May
190.9
109.1
11.7
1
29 May
178.3
95.5
11.5
4
30 May
163.8
83.6
11.7
2
31 May
156.4
81.6
11.8
1
1 Jun
160.4
79.8
11.9
2
3 Jun
175.2
93.6
12.1
1
6 Jun
162.1
81.1
12.8
1
11 Jun
186.7
106.2
12.8
1
13 Jun
184.7
101.1
12.3
1
16 Jun
187.6
105.1
13.0
1
94
Appendix Table 24. Daily first-time detections of PIT-tagged wild spring/summer
Chinook salmon smolts from Idaho at McNary Dam during 2011,
with associated river flows (kcfs), spill (kcfs), and water
temperatures (°C) at the dam.
McNary Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
17 Apr
248.4
100.1
7.4
1
19 Apr
252.7
103.7
7.9
1
21 Apr
277.7
127.4
8.1
2
25 Apr
257.4
112.8
8.7
1
28 Apr
255.8
106.6
8.6
1
29 Apr
246.0
98.9
8.6
1
2 May
255.9
106.9
9.2
1
3 May
251.3
102.4
9.2
1
4 May
248.6
99.4
9.2
2
5 May
247.5
99.0
9.5
5
6 May
249.1
99.9
9.8
4
7 May
249.7
100.1
9.9
2
8 May
249.3
99.8
10.1
4
9 May
277.5
129.0
10.4
5
10 May
265.6
118.9
10.2
1
12 May
295.4
151.1
11.2
1
14 May
347.3
209.8
11.3
1
15 May
385.8
250.3
11.6
4
17 May
437.8
299.4
11.2
1
18 May
422.0
279.6
11.3
2
19 May
421.5
279.6
11.5
3
20 May
416.4
273.4
11.7
2
23 May
480.2
333.0
11.2
2
24 May
473.1
325.5
11.3
1
25 May
470.1
321.4
11.7
1
28 May
495.5
346.4
12.0
2
29 May
499.4
349.9
11.8
1
31 May
473.5
324.0
12.0
1
7 Jun
493.6
342.9
13.1
1
17 Jun
478.5
304.2
13.6
1
95
Appendix Table 25. Daily first-time detections of PIT-tagged wild spring/summer
Chinook salmon smolts from Idaho at John Day Dam during 2011,
with associated river flows (kcfs), spill (kcfs), and water
temperatures (°C) at the dam.
John Day Dam
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
25 Apr
264.6
79.4
8.8
1
26 Apr
247.0
74.4
8.9
1
27 Apr
270.1
85.5
9.1
1
2 May
250.8
100.2
9.7
2
6 May
260.4
103.9
10.0
1
7 May
245.1
93.7
10.2
1
9 May
281.8
88.9
10.5
1
13 May
347.0
103.7
11.6
1
14 May
351.8
105.3
11.7
2
15 May
383.6
122.6
11.8
2
16 May
438.6
148.7
11.9
2
18 May
457.9
187.1
12.1
1
20 May
467.3
186.9
12.0
7
21 May
474.3
194.7
12.2
3
22 May
476.7
193.8
12.3
7
23 May
493.6
214.9
12.2
5
24 May
495.3
220.0
12.0
1
25 May
490.8
200.2
11.8
2
26 May
483.0
205.7
11.7
3
27 May
501.7
217.4
11.9
2
29 May
518.3
236.6
12.4
5
30 May
509.1
233.6
12.4
1
31 May
512.0
235.0
12.4
1
1 Jun
495.7
235.7
12.5
2
3 Jun
498.0
225.6
12.7
2
4 Jun
513.8
230.4
12.7
2
14 Jun
500.6
239.9
14.1
3
96
Appendix Table 26. Daily first-time detections of PIT-tagged wild spring/summer
Chinook salmon smolts from Idaho at Bonneville Dam during 2011,
with associated river flows (kcfs), spill (kcfs), and water
temperatures (°C) at the dam. Table also includes first-time
detections at the PIT-tag trawl (TWX) near the mouth of the
Columbia River.
Date
Flow
(mean kcfs)
Spill
(mean kcfs)
Water temperature
(°C)
Detections (n)
Bonneville Dam
10 May
301.6
99.5
11.0
1
14 May
358.8
129.2
11.8
1
Estuary trawl PIT-tag detection (TWX)
29 May
1
3 Jun
1
97
Appendix Table 27. Monthly environmental data collected from Marsh Creek
(rkm 179.8 from the mouth of the Middle Fork Salmon River),
August 2010-July 2011.
Marsh Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
5.2
2.7
0.1
-0.1
-0.1
-0.1
-0.1
-0.1
-0.1
0.2
1.4
4.5
Max
17.7
14.8
12.0
6.9
3.9
3.0
4.7
6.5
9.7
10.5
14.2
17.2
Mean
11.1
8.0
5.1
1.7
0.5
0.6
0.6
2.1
3.1
3.7
7.2
10.7
Dissolved oxygen (ppm)
Min
8.9
9.9
10.3
10.2
11.4
11.5
11.7
11.2
10.3
8.0
---
8.0
Max
13.1
14.4
15.2
13.1
13.4
13.8
14.2
15.1
14.8
14.4
---
10.1
Mean
10.8
12.1
12.7
11.7
12.2
12.5
12.9
12.7
12.4
11.4
---
9.0
Specific conductance (μS/cm)
Min
56.0
57.0
58.0
53.0
59.0
53.0
51.0
61.0
59.0
28.0
31.0
34.0
Max
63.0
65.0
66.0
70.0
78.0
72.0
73.0
70.0
70.0
70.0
41.0
64.0
Mean
59.1
61.3
63.7
64.2
65.7
64.5
65.6
67.4
65.8
43.5
35.6
45.6
Turbidity (ntu)
Min
---
---
---
---
---
---
---
---
---
---
---
---
Max
---
---
---
---
---
---
---
---
---
---
---
---
Mean
---
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
0.4
0.5
0.4
0.1
0.5
0.6
0.2
0.3
0.4
1.0
2.3
1.5
Max
1.2
1.2
1.3
1.7
2.5
2.4
2.0
1.1
1.1
3.3
3.8
3.4
Mean
0.9
0.9
0.9
1.0
1.3
1.4
0.8
0.7
0.8
2.2
3.2
2.4
pH
Min
7.4
7.4
7.2
7.1
7.2
7.1
7.2
7.3
7.2
6.5
6.8
6.9
Max
8.6
8.6
8.4
8.5
8.7
7.9
8.2
8.2
8.4
8.0
7.3
8.0
Mean
7.8
7.8
7.6
7.4
7.4
7.4
7.5
7.6
7.6
6.9
7.0
7.3
98
Appendix Table 28. Monthly environmental data collected from the Salmon River near
Sawtooth Hatchery (rkm 618), August 2010-July 2011.
Salmon River
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
8.1
6.0
2.5
-0.1
-0.1
-0.1
-0.1
0.0
0.1
2.1
4.8
7.9
Max
19.5
17.1
13.9
8.0
5.1
4.2
5.6
9.6
11.3
12.3
15.9
18.3
Mean
13.2
10.6
7.5
2.9
1.2
1.1
1.3
3.2
5.3
6.9
9.8
13.4
Dissolved oxygen (ppm)
Min
4.6
4.5
0.2
10.0
---
---
---
9.8
5.3
5.3
7.1
6.0
Max
8.3
8.7
14.5
15.2
---
---
---
14.0
15.1
13.4
14.2
10.3
Mean
6.2
6.6
5.7
13.0
---
---
---
11.7
10.9
10.9
10.1
8.2
Specific conductance (μS/cm)
Min
121.0
143.0
126.0
143.0
149.0
147.0
---
150.0
158.0
90.0
67.0
67.0
Max
149.0
158.0
158.0
158.0
158.0
158.0
---
158.0
158.0
158.0
117.0
115.0
Mean
137.0
149.3
147.2
153.3
155.2
154.9
---
155.8
158.0
116.3
86.3
82.3
Turbidity (ntu)
Min
---
---
---
---
---
---
---
---
---
---
---
---
Max
---
---
---
---
---
---
---
---
---
---
---
---
Mean
---
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
0.8
0.9
0.9
0.8
0.5
1.1
0.7
0.9
0.7
1.3
1.8
1.8
Max
1.6
1.6
2.1
2.4
1.9
2.5
2.5
1.7
1.6
2.3
3.1
3.2
Mean
1.3
1.3
1.5
1.6
1.4
1.6
1.3
1.3
1.2
1.9
2.5
2.4
pH
Min
7.9
8.1
7.9
7.7
7.8
7.8
7.9
7.8
7.8
7.6
7.3
7.3
Max
9.0
9.1
9.3
8.7
8.9
9.0
8.9
9.1
8.6
8.6
8.6
8.7
Mean
8.4
8.5
8.5
8.1
8.2
8.2
8.3
8.2
8.1
7.9
7.8
7.7
99
Appendix Table 29. Monthly environmental data collected from Valley Creek
(rkm 609.4 from the mouth of the Salmon River; 0.4 km from the
mouth of Valley Creek), August 2010-July 2011.
Valley Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
7.8
4.6
1.1
0.1
0.1
0.1
0.1
0.1
0.1
1.0
3.9
7.4
Max
22.0
18.6
14.9
7.9
3.0
0.8
1.3
7.5
10.4
13.9
16.1
18.9
Mean
14.3
10.5
6.7
2.1
0.4
0.3
0.4
1.9
3.6
5.8
9.7
12.7
Dissolved oxygen (ppm)
Min
6.8
7.4
8.4
10.3
12.4
12.6
13.2
10.7
10.0
8.3
8.1
7.5
Max
9.7
10.8
12.1
13.6
13.9
14.4
14.7
14.4
14.9
14.4
12.8
11.3
Mean
8.1
9.2
10.4
12.2
13.1
13.4
13.8
13.3
11.9
11.2
10.0
9.0
Specific conductance (μS/cm)
Min
56.0
64.0
57.0
78.0
72.0
78.0
83.0
85.0
74.0
44.0
39.0
37.0
Max
68.0
71.0
84.0
97.0
95.0
98.0
104.0
106.0
87.0
78.0
54.0
48.0
Mean
63.3
67.7
69.3
86.5
86.6
89.0
91.7
94.1
80.7
53.9
45.8
41.3
Turbidity (ntu)
Min
---
---
---
---
---
---
---
---
---
---
---
---
Max
---
---
---
---
---
---
---
---
---
---
---
---
Mean
---
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
0.6
0.7
0.7
0.6
0.6
1.3
0.7
0.8
0.9
1.6
2.2
1.7
Max
1.4
1.4
1.9
2.1
1.9
2.0
2.1
1.7
1.7
3.2
3.3
3.4
Mean
1.1
1.1
1.2
1.5
1.4
1.7
1.3
1.3
1.4
2.4
2.9
2.6
pH
Min
7.4
7.5
7.2
7.2
7.3
7.1
7.2
7.4
7.3
6.9
7.0
7.0
Max
8.3
8.2
8.2
7.9
7.9
7.8
8.0
8.2
8.3
8.5
8.4
8.2
Mean
7.6
7.6
7.7
7.5
7.5
7.4
7.6
7.7
7.6
7.5
7.4
7.5
100
Appendix Table 30. Monthly environmental data collected from the South Fork Salmon
River (rkm 112 from its confluence with the main Salmon River),
August 2010-July 2011.
South Fork Salmon River
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
7.9
5.4
1.2
0.0
0.0
0.0
0.0
-0.1
-0.5
0.9
2.1
4.4
Max
19.9
15.8
13.4
6.7
1.8
1.9
2.6
5.5
7.5
8.7
11.4
17.3
Mean
13.6
10.1
6.5
2.0
0.3
0.2
0.3
1.7
2.3
4.1
5.7
11.1
Dissolved oxygen (ppm)
Min
5.9
8.7
9.6
10.6
13.3
13.9
13.0
9.8
---
---
---
---
Max
10.8
11.8
13.7
14.2
14.8
15.2
15.2
14.0
---
---
---
---
Mean
8.1
10.2
11.4
12.5
13.9
14.3
13.9
11.9
---
---
---
---
Specific conductance (μS/cm)
Min
39.0
40.0
33.0
31.0
28.0
28.0
32.0
33.0
35.0
28.0
28.0
28.0
Max
54.0
47.0
48.0
45.0
44.0
44.0
48.0
55.0
50.0
41.0
28.0
40.0
Mean
45.7
43.8
44.2
39.1
39.2
38.2
41.0
42.4
41.7
31.9
28.0
33.9
Turbidity (ntu)
Min
---
---
---
---
---
---
---
---
---
---
---
---
Max
---
---
---
---
---
---
---
---
---
---
---
---
Mean
---
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
0.3
0.8
0.8
0.7
0.3
1.2
0.6
0.7
1.0
1.8
1.8
0.8
Max
1.5
1.4
1.7
2.3
2.8
3.1
3.1
1.5
1.9
3.3
3.4
2.6
Mean
0.8
1.1
1.2
1.5
1.6
2.0
1.5
1.1
1.5
2.4
2.6
1.4
pH
Min
6.3
5.7
5.5
7.3
7.4
7.2
7.3
7.3
6.8
6.6
6.5
6.9
Max
8.4
7.6
7.7
8.6
8.3
8.6
9.5
9.7
8.5
8.4
8.8
8.8
Mean
7.4
6.4
6.3
7.5
7.6
7.5
7.8
8.0
7.3
7.0
7.2
7.5
101
Appendix Table 31. Monthly environmental data collected from the Secesh River
(rkm 27 from its confluence with the South Fork Salmon River),
August 2010-July 2011.
Secesh River
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
6.3
4.6
0.2
-0.2
-0.2
-0.2
-0.2
-0.2
-0.2
-0.2
1.7
3.9
Max
17.8
15.5
11.9
5.8
-0.1
-0.2
-0.2
-0.2
5.8
7.1
11.4
15.3
Mean
11.7
9.2
4.9
0.7
-0.2
-0.2
-0.2
-0.2
0.6
2.7
5.2
9.9
Dissolved oxygen (ppm)
Min
9.3
10.3
11.7
13.3
13.7
14.2
13.2
11.7
8.3
3.5
0.6
0.0
Max
13.9
14.9
15.2
15.2
15.2
15.2
15.0
13.6
11.8
9.2
4.0
0.9
Mean
11.4
12.6
14.0
14.5
14.3
14.6
14.0
12.7
10.2
6.2
1.9
0.3
Specific conductance (μS/cm)
Min
31.0
32.0
30.0
28.0
28.0
30.0
32.0
30.0
28.0
28.0
---
---
Max
40.0
44.0
44.0
34.0
33.0
33.0
34.0
34.0
30.0
28.0
---
---
Mean
35.3
37.6
36.5
30.5
30.9
31.6
32.8
32.6
28.7
28.0
---
---
Turbidity (ntu)
Min
---
---
---
---
---
---
---
---
---
---
---
---
Max
---
---
---
---
---
---
---
---
---
---
---
---
Mean
---
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
0.6
0.6
0.5
0.5
1.0
1.8
2.0
2.4
1.2
1.7
3.5
2.1
Max
1.3
1.5
1.6
2.0
2.2
2.8
2.9
4.1
4.5
4.5
5.0
4.8
Mean
0.9
0.9
1.0
1.4
1.8
2.3
2.6
3.2
2.6
3.2
4.4
3.3
pH
Min
7.2
7.1
7.1
6.8
6.8
6.8
6.9
7.0
6.9
6.8
6.7
6.8
Max
7.4
7.3
7.9
7.9
7.1
7.1
7.1
7.2
7.8
7.8
7.5
7.8
Mean
7.2
7.2
7.2
7.2
6.9
6.9
7.0
7.1
7.2
7.1
7.0
7.1
102
Appendix Table 32. Monthly environmental data collected from Big Creek near Taylor
Ranch (rkm 10 from its confluence with the Middle Fork Salmon
River), August 2010-July 2011.
Big Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
---
7.7
2.4
-0.1
-0.1
-0.1
-0.1
-0.1
1.5
3.7
4.8
6.6
Max
---
16.3
13.0
6.3
0.8
0.6
1.2
7.7
9.5
11.1
11.8
16.8
Mean
---
11.3
7.1
2.4
0.0
0.0
0.1
2.6
5.0
6.5
7.6
11.5
Dissolved oxygen (ppm)
Min
---
9.9
10.5
---
---
---
---
9.9
9.4
8.4
---
---
Max
---
14.8
15.2
---
---
---
---
13.1
14.9
13.1
---
---
Mean
---
11.7
12.3
---
---
---
---
11.1
11.6
10.1
---
---
Specific conductance (μS/cm)
Min
---
108.0
77.0
78.0
63.0
73.0
78.0
81.0
107.0
66.0
49.0
53.0
Max
---
126.0
136.0
104.0
102.0
101.0
102.0
134.0
135.0
136.0
78.0
90.0
Mean
---
117.3
100.6
83.3
84.1
83.8
86.0
91.6
125.5
89.3
62.3
70.0
Turbidity (ntu)
Min
---
---
---
---
---
---
---
---
---
---
---
---
Max
---
---
---
---
---
---
---
---
---
---
---
---
Mean
---
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
---
2.4
2.1
2.0
1.7
2.5
1.9
2.0
2.7
3.2
4.3
3.7
Max
---
3.1
3.3
3.4
4.9
3.6
3.9
3.1
3.6
6.0
7.2
6.2
Mean
---
2.8
2.8
2.8
2.8
2.9
2.6
2.5
3.1
4.5
5.8
4.6
pH
Min
---
7.9
8.0
8.2
8.3
8.3
8.3
7.9
7.8
7.5
7.5
7.7
Max
---
9.0
9.1
9.1
9.0
8.9
9.7
10.0
9.3
9.3
8.0
9.2
Mean
---
8.4
8.4
8.4
8.4
8.5
8.7
8.8
8.3
7.9
7.7
8.2
103
Appendix Table 33. Monthly environmental data collected from Bear Valley/Elk Creek
(rkm 14 from the confluence of Bear Valley Creek with the Middle
Fork Salmon River; 50 m below the mouth of Elk Creek),
August 2010-July 2011.
Bear Valley/Elk Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
7.9
5.8
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
2.9
8.8
Max
19.2
15.6
13.0
6.0
0.2
0.2
0.2
1.0
7.6
8.5
15.3
17.7
Mean
13.8
10.0
6.1
1.3
0.0
0.0
0.0
0.1
1.6
3.2
8.9
13.3
Depth (ft)
Min
2.6
2.7
2.6
2.5
2.5
3.2
2.6
2.4
2.6
3.2
4.6
3.3
Max
3.4
3.4
3.4
3.7
3.7
4.1
4.0
3.5
3.5
5.8
6.2
5.0
Mean
3.1
3.1
3.1
3.2
3.3
3.7
3.3
2.9
3.0
4.4
5.4
3.9
Appendix Table 34. Monthly environmental data collected from Sulphur Creek (rkm 10
from its confluence with the Middle Fork Salmon River),
August 2010-July 2011.
Sulphur Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
6.1
4.4
1.6
0.0
0.0
0.0
0.0
0.0
0.0
0.6
1.9
6.8
Max
15.7
13.4
10.5
5.7
2.9
2.4
2.7
4.6
6.2
7.5
8.8
13.6
Mean
10.6
7.9
5.4
1.9
0.6
0.5
0.4
1.6
2.2
3.0
5.2
9.6
Depth (ft)
Min
0.6
0.7
0.8
0.5
0.3
0.8
0.5
0.5
1.0
1.7
2.8
0.2
Max
1.4
1.4
1.6
1.9
1.6
1.9
1.8
1.5
1.8
3.8
4.7
3.9
Mean
1.1
1.1
1.3
1.2
1.1
1.4
1.1
1.0
1.4
2.8
3.9
2.6
104
Appendix Table 35. Monthly environmental data collected from upper Big Creek
(rkm 60 from its confluence with the Middle Fork Salmon River),
August 2010-July 2011.
Big Creek (upper)
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
6.1
5.0
2.6
0.0
0.0
0.0
0.0
0.1
0.5
1.7
2.3
3.6
Max
15.0
13.0
11.3
7.2
3.4
3.1
4.2
5.7
7.0
8.4
9.3
13.3
Mean
9.7
8.0
5.9
3.0
1.3
1.2
1.1
2.1
2.8
3.9
4.9
8.0
Depth (ft)
Min
1.4
1.5
1.2
1.1
0.8
1.5
1.1
1.2
1.4
1.9
2.3
2.3
Max
2.2
2.2
2.3
2.4
2.4
2.7
2.5
2.1
2.1
3.4
4.3
4.1
Mean
1.9
1.9
1.9
1.8
1.7
1.9
1.7
1.6
1.8
2.5
3.3
3.0
Appendix Table 36. Monthly environmental data collected from Chamberlain Creek
(rkm 25 from its confluence with the main Salmon River),
August 2010-July 2011.
Chamberlain Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
5.5
4.2
0.9
0.0
0.0
0.1
0.0
0.0
0.2
1.0
2.5
5.8
Max
17.9
15.3
12.9
6.4
0.6
0.5
2.0
3.4
5.3
7.8
12.6
17.0
Mean
12.6
9.1
5.3
1.3
0.4
0.3
0.2
1.1
2.3
3.7
6.2
11.5
Depth (ft)
Min
0.3
0.4
0.1
0.1
0.0
0.4
0.0
0.0
0.5
1.0
1.6
0.5
Max
1.4
1.1
1.1
1.7
1.5
2.5
3.0
1.2
1.2
2.7
3.4
2.2
Mean
0.9
0.7
0.8
0.8
0.9
1.2
1.0
0.5
0.8
1.8
2.3
1.0
105
Appendix Table 37. Monthly environmental data collected from West Fork Chamberlain
Creek (rkm 25 from the confluence of Chamberlain Creek with the
main Salmon River; 1 rkm from the mouth of West Fork
Chamberlain Creek), August 2010-July 2011.
West Fork Chamberlain Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
5.0
3.8
0.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
2.3
6.2
Max
18.1
13.1
11.1
5.8
0.4
0.2
2.2
4.1
6.4
7.3
12.1
15.7
Mean
11.3
8.1
4.7
1.1
0.0
0.0
0.2
0.9
1.7
3.1
6.1
10.6
Depth (ft)
Min
0.2
0.3
0.2
0.0
0.0
0.3
0.0
0.0
0.2
0.8
2.1
0.9
Max
1.7
1.2
1.1
1.3
0.9
1.0
1.1
1.0
1.1
3.5
3.3
2.5
Mean
1.1
0.7
0.7
0.6
0.5
0.7
0.5
0.4
0.6
2.2
2.8
1.4
Appendix Table 38. Monthly environmental data collected from Lake Creek (rkm 46
from the confluence of the Secesh River with the South Fork
Salmon River; 1 rkm above the mouth of Lake Creek),
August 2010-July 2011.
Lake Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
4.4
3.9
0.2
0.0
0.0
0.0
0.0
0.0
0.0
0.1
0.8
3.5
Max
17.4
13.2
10.5
4.6
0.1
0.0
0.0
1.3
3.9
6.0
10.8
14.0
Mean
11.3
8.0
4.4
0.8
0.0
0.0
0.0
0.1
0.7
1.9
4.4
9.2
Depth (ft)
Min
0.7
0.8
0.6
0.6
0.7
1.4
0.9
0.5
0.7
1.1
2.1
1.7
Max
1.5
1.5
1.5
2.2
2.1
3.1
2.7
2.3
1.5
2.7
4.4
4.0
Mean
1.2
1.1
1.1
1.3
1.6
2.1
1.9
1.3
1.0
1.8
3.3
2.6
106
Appendix Table 39. Monthly environmental data collected from Cape Horn Creek
(rkm 180 from the mouth of the Middle Fork Salmon River; 150 m
above the Marsh Creek monitoring site), August 2010-July 2011.
Cape Horn Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
4.6
2.5
0.0
0.0
0.0
0.0
0.0
0.0
-0.1
0.0
0.7
3.4
Max
16.4
14.2
12.0
6.0
0.6
0.2
0.2
4.9
8.9
10.5
11.7
14.9
Mean
9.7
7.0
4.4
1.2
0.0
0.0
0.0
0.7
2.1
3.3
5.1
8.5
Depth (ft)
Min
0.1
---
---
---
---
---
---
---
---
---
---
---
Max
1.4
---
---
---
---
---
---
---
---
---
---
---
Mean
1.0
---
---
---
---
---
---
---
---
---
---
---
Appendix Table 40. Monthly environmental data collected from Herd Creek (rkm 15
from the confluence of the Salmon River and East Fork Salmon
River; 1 rkm above the mouth of Herd Creek),
August 2010-July 2011.
Herd Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
6.5
4.9
1.5
0.0
0.0
0.0
0.0
0.0
0.1
1.8
3.3
6.2
Max
17.0
15.8
13.4
7.5
3.8
3.3
5.4
9.2
12.3
14.5
13.9
16.2
Mean
11.3
9.5
6.5
2.4
0.8
0.6
0.7
2.8
4.9
7.1
8.0
10.8
Depth (ft)
Min
0.9
1.0
0.8
0.5
0.3
0.9
0.5
0.6
0.7
1.0
1.6
1.7
Max
1.9
1.8
1.9
1.9
1.6
1.6
1.8
1.6
1.4
2.0
3.0
2.8
Mean
1.5
1.4
1.5
1.3
1.2
1.3
1.1
1.0
1.1
1.6
2.3
2.2
107
Appendix Table 41. Monthly environmental data collected from Camas Creek (rkm 23
from its confluence with the Middle Fork Salmon River),
August 2010-July 2011.
Camas Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
9.2
---
---
---
---
---
---
---
---
---
---
---
Max
17.2
---
---
---
---
---
---
---
---
---
---
---
Mean
13.0
---
---
---
---
---
---
---
---
---
---
---
Depth (ft)
Min
1.2
---
---
---
---
---
---
---
---
---
---
---
Max
1.4
---
---
---
---
---
---
---
---
---
---
---
Mean
1.3
---
---
---
---
---
---
---
---
---
---
---
Appendix Table 42. Monthly environmental data collected from Loon Creek (rkm 31
from its confluence with the Middle Fork Salmon River),
August 2010-July 2011.
Loon Creek
Aug
Sept
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Temperature (°C)
Min
6.8
4.9
1.8
0.0
0.0
0.0
0.0
0.0
0.0
2.0
3.2
4.7
Max
16.8
14.9
13.0
7.0
3.1
1.0
2.5
6.8
9.7
11.2
10.5
14.9
Mean
10.9
8.7
6.1
2.0
0.3
0.0
0.2
1.7
3.7
5.4
6.1
9.3
Depth (ft)
Min
1.7
1.8
1.6
1.3
1.1
1.6
1.1
1.2
1.5
2.1
2.6
2.6
Max
2.7
2.5
2.6
2.7
4.1
4.2
4.1
2.2
2.2
3.4
4.5
4.1
Mean
2.3
2.2
2.2
2.1
2.2
2.7
2.0
1.7
1.9
2.7
3.6
3.2
108
Appendix Figure 1. Daily passage of wild Chinook salmon fry, parr, and smolts at five
migrant traps, expressed as percentages of total collected, and
plotted against average daily water temperatures collected near traps.
Periods of trap operation are also shown.
109
Appendix Figure 1. Continued.
110
Appendix Figure 1. Continued.
111
Appendix Figure 2. Daily passage of wild Chinook salmon fry, parr, and smolts at five
migrant traps, expressed as percentages of total collected, and
plotted against average daily specific conductance collected near
traps. Periods of trap operation are also shown.
112
Appendix Figure 2. Continued.
113
Appendix Figure 2. Continued
114
Appendix Figure 3. Daily passage of wild Chinook salmon fry, parr, and smolts at five
migrant traps, expressed as percentages of total collected, and
plotted against average daily dissolved oxygen collected near traps.
Periods of trap operation are also shown.
115
Appendix Figure 3. Continued.
116
Appendix Figure 3. Continued.
117
Appendix Figure 4. Daily passage of wild Chinook salmon fry, parr, and smolts at five
migrant traps, expressed as percentages of total collected, and
plotted against average daily pH collected near traps. Periods of trap
operation are also shown.
118
Appendix Figure 4. Continued.
119
Appendix Figure 4. Continued.
120
Appendix Figure 5. Daily passage of wild Chinook salmon fry, parr, and smolts at five
migrant traps, expressed as percentages of total collected, and
plotted against average daily depth collected near traps. Periods of
trap operation are also shown.
121
Appendix Figure 5. Continued.
122
Appendix Figure 5. Continued.
123
Appendix Figure 6. Combined daily PIT-tag detections of wild Chinook salmon parr at
in-stream PIT-tag detectors in Valley Creek, expressed as
percentages of total detected, and plotted against average daily
aquatic conditions collected near the detectors. Periods of operation
for the detectors are also shown.
124
Appendix Figure 6. Continued.
125
Appendix Figure 6. Continued.