Chenik Lake - Cook Inlet Aquaculture Association, Kenai, Alaska

Byers Lake 

Sockeye Salmon 

Final Report 

2006-2009 

Prepared by: 

Nathan Weber, Biologist 

February 2009 

The Byers Lake Project was made possible through enhancement taxes paid by the 

commercial fishermen in Area H Cook Inlet and associated waters, an Alaskan Sustainable 

Salmon Fund grant received from the Alaska Department of Fish & Game and the 

National Oceanic and Atmospheric Administration, and a State of Alaska Designated 

Legislative Grant.

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DISCLAIMER 

The Cook Inlet Aquaculture Association conducts salmon enhancement and restoration projects 

in Area H, Cook Inlet and associated waters. As an integral part of these projects a variety of 

monitoring and evaluation studies are conducted. The following progress report is a synopsis of 

the monitoring and evaluation studies conducted for Byers Lake. This Byers Lake Progress 

Report encompasses data collected from the 2006 adult sockeye escapement through the 2009 

sockeye smolt migration as it falls under the Alaskan Sustainable Salmon Fund grant. 

The purpose of the progress report is to provide a vehicle to distribute the information produced 

by the monitoring and evaluation studies. Data collected each year are presented with a 

summary of the information previously collected for comparative purposes. These reports are 

intended to provide a general description of project activity and are not an exhaustive evaluation 

of any restoration or enhancement project. The information presented in this report has not 

undergone an extensive review. As reviews are completed, the information may be updated and 

presented in later progress reports. 

The Byers Lake Progress Report was prepared by Cook Inlet Aquaculture Association under 

award of the Alaskan Sustainable Salmon Fund 45608 from the National Oceanic and 

Atmospheric Administration, U.S. Department of Commerce, administered by the Alaska 

Department of Fish and Game. The statements, findings, conclusions, and recommendations are 

those of the author(s) and do not necessarily reflect the views of the National Oceanic and 

Atmospheric Administration, the U.S. Department of Commerce, or the Alaska Department of 

Fish and Game. 

CIAA maintains a strong policy of equal employment opportunity for all employees and 

applicants for employment. We hire, train, promote, and compensate employees without regard 

for race, color, religion, sex, sexual orientation, national origin, age, marital status, disability or 

citizenship, as well as other classifications protected by applicable federal, state or local laws. 

Our equal employment opportunity philosophy applies to all aspects of employment with CIAA 

including recruiting, hiring, training, transfer, promotion, job benefits, pay, dismissal, and 

educational assistance. 

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ACKNOWLEDGEMENTS 

Many individuals and agencies contributed to the success of the Byers Lake Project from 2006 

through 2009. Appreciation is extended to Cook Inlet Aquaculture Association 2006 Interns 

Josh Iamurri and Danielle DesRosier, and Seasonal Assistant Paul Blanche, the CIAA 2007 

Interns Jennifer Grew, Nichole McManus, and Jennifer Hillman, the CIAA 2008 Interns Andrew 

Smart, Trennan Dorval, Conner Mewhinney, and Jacob Miller, and Seasonal Assistants Nathan 

Weber and Kevin Lauscher, and the CIAA 2009 Interns Lukas Eddy and Zachary Baer, as well 

as all full time staff who aided in the field. Special thanks go to the Alaska Department of Fish 

and Game Upper Cook Inlet fisheries offices for the support they provided during this project. 

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TABLE OF CONTENTS 

DISCLAIMER ................................................................................................................................. i 

ACKNOWLEDGEMENTS ........................................................................................................... iii 

TABLE OF CONTENTS ................................................................................................................ v 

LIST OF FIGURES ...................................................................................................................... vii 

LIST OF TABLES ......................................................................................................................... ix 

ABSTRACT ................................................................................................................................... xi 

INTRODUCTION AND PURPOSE .............................................................................................. 1 

PROJECT AREA ............................................................................................................................ 3 

METHODS ..................................................................................................................................... 5 

RESULTS AND DISCUSSION ..................................................................................................... 9 

RECOMMENDATIONS .............................................................................................................. 15 

LITERATURE CITED ................................................................................................................. 17 

APPENDICES .............................................................................................................................. 19 

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LIST OF FIGURES 

Figure 1 Byers Lake in relation to Cook Inlet and Alaska .......................................................... 3 

Figure 2 Hydrographic map of Byers Lake ................................................................................. 4 

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LIST OF TABLES 

Table 1. Byers Lake average open water season water quality characteristics, 2006 – 2009 ..... 9 

Table 2. Seasonal Mean Zooplankton Density and Biomass of Byers Lake ............................... 9 

Table 3. Summary of Byers Lake sockeye smolt characteristics, 2006 – 2009......................... 12 

Table 4. Summary of Byers Lake adult sockeye salmon characteristics, 2006 – 2008 ............. 13 

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ABSTRACT 

The 2006 Byers Lake adult escapement was the first time CIAA monitored Byers Creek by use 

of weir. The adult escapement was enumerated from 13 July and continued daily until 16 

August when the weir became inoperable due to extreme flooding conditions. During this time 

3,071 adult sockeye (O. nerka) salmon returned to Byers Creek. 

Adult sockeye salmon characteristics were not evaluated during the 2006 field season. Field 

personnel collected 10 adult sockeye samples and were not sufficient to evaluate age analysis 

The 2007 smolt migration was enumerated from 25 May and continued daily until 25 June. 

During this time 15,530 sockeye (O. nerka) and 982 coho (O. kisutch) smolts migrated from the 

lake. The 10% sub-sampling procedure was not used and all smolt were physically counted 

during the monitoring period. 

Based on the sockeye smolt samples collected, an estimated 99% (±0.001%) were age 1 and 1% 

(±3.5%) were age 2. The average length and weight of age 1 sockeye smolt were 99 mm (±0.4 

mm) and 8.5 g (±0.2 g). The average length and weight of age 2 sockeye smolt were 102 mm 

(±3.5 mm) and 9.9 g (±3.1 g) 

The 2007 adult salmon escapement was enumerated from 16 July and continued daily until 30 

August. During this time, 1,701 adult sockeye (O. nerka) returned to Byers Creek. 

Based on adult sockeye samples collected, 2.35% were age 0.3, 7.05% were age 1.2, 85.13% 

were age 1.3, 2.35% were age 2.2 and 3.12% were age 2.3. Of the returning salmon population, 

55% were male and 45% were female. The average length of adult sockeye population was 568 

mm. The average length of adult sockeye males was 582 mm. The average length of adult 

sockeye females was 550 mm. 


During this time 6,470 sockeye (O. nerka) and 24,287 coho (O. kisutch) smolts migrated from 

the lake. The 10% sub-sampling procedure was not used and all smolt were physically counted 

during the monitoring period. 



mm) and 7.1 g (±1.9 g). The average length and weight of age 2 sockeye smolt were 127 mm 

(±13 mm) and 18.7 g (±6.5 g). 


August. During this time, 1,482 adult sockeye (O. nerka) salmon returned to Byers Creek. 


were age 1.3, 0.34% were age 1.4, 0.34% were age 2.2, and 5.83% were age 2.3. Of the 

returning salmon population, 58% were male and 42% were female. The average length of adult 

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sockeye population was 573 mm. The average length of adult sockeye males was 582 mm. The 

average length of adult sockeye females was 560 mm. 


During this time, an estimated 14,800 sockeye (O. nerka) and 17,700 coho (O. kisutch) smolts 

migrated from the lake. High water upon arrival on May 28 in Byers Creek prevented the field 

crew from completing the set-up of the smolt trap. On June 2, the stream stage decreased in 

Byers Creek enough to complete the smolt trap set-up. The total smolt count was not estimated 

using the trap efficiency procedure. The 10% sub-sampling procedure was not used and all smolt 

were physically counted during the monitoring period. 



mm) and 8.2g (±0.1 g). The average length and weight of age 2 sockeye smolt were 101 mm 

(±13.5 mm) and 10.5 g (±4.3 g). 

Water chemistry and zooplankton samples were collected twice in 2006, 4 times during 2007, 5 

times in 2008, and 5 times in 2009. A summary of average open water quality characteristics is 

listed in Table 1. ADF&G provided the analysis. 

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INTRODUCTION AND PURPOSE 

To better understand the recent unexpected low adult sockeye returns to Upper Cook Inlet, the 

Cook Inlet Aquaculture Association (CIAA) is conducting a complete enumeration of both the 

juvenile and adult migrations on seven lakes thought to be key sockeye salmon producers in the 

Upper Cook Inlet drainage. Understanding the adult to juvenile relationship will allow 

management biologists to analyze and evaluate the production and rearing conditions of each 

lake. In addition to the collection of physical data on juvenile and adult salmon, CIAA is also 

collecting water quality measurements to better understand the entire salmon life cycle. Our goal 

is to collect sound biological data to provide the foundation on which decisions for management 

and rehabilitation strategies will be drawn. 

The smolt and adult enumeration studies and water quality measurements being collected by 

CIAA are part of a large effort by the Alaska Department of Fish and Game (ADF&G) to assess 

the salmon rearing environment of the Upper Cook Inlet drainage. To assist ADF&G, CIAA 

collected genetic samples from adult fish for analysis and recorded adult fish marked with a 

Passive Integrated Transponder tag for a mark-recapture study being conducted by ADF&G. 

ADF&G is also conducting a fall hydroacoustic analysis to survey fry production in each lake. 

All information recorded by CIAA is provided to ADF&G. 

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PROJECT AREA 

Byers Lake is located in Denali State Park approximately 50 km north of Talkeetna, Alaska 

(Figure 1). Significant vegetation along the lake is alder (Alnus spp.), birch (Betula spp.) and 

cottonwood (Populus spp.). The lake covers 131.5 ha, has a maximum depth of 54.0 m, a mean 

depth of 20.0 m, a 6.4 km shoreline, and is located at an elevation of 248.8 m above sea level 

(Figure 2). Byers Lake has a discharge via Byers Creek which flows southwest into the Chulitna 

River. 

Byers 

Lake 

Talkeetna 

Figure 1 

Byers Lake in relation to Cook Inlet and Alaska 

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Byers Lake 

Figure 2 Hydrographic map of Byers Lake 

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Limnological Sampling 

METHODS 

Assessments of water quality were started during the 2006 adult escapement and continued 

during open water season through the 2009 adult escapement. One primary site was sampled for 

dissolved oxygen, temperature, light transmission profile, Secchi disk transparency, and 

zooplankton densities. Samples for analysis of phosphorous, carbon, chlorophyll a, phaeophytin 

a, nitrogen, calcium, magnesium, iron, conductivity, pH, alkalinity, turbidity, and color were also 

collected with a Kemmerer sampler one meter below the surface and from the midhypolimnion. 

One secondary site was limited to the zooplankton density and Secchi disk transparency. Water 

samples were collected by CIAA and water analysis completed by ADF&G. Sample collection 

and analysis procedures are described by Koenings, et al. (1986). 

Environmental Conditions 

Percent cloud cover was visually estimated, stream stage was measured to the nearest tenth of a 

foot, precipitation measured to the nearest millimeter and water and air temperatures were 

recorded at 5:00 PM each day. Stream stage measurements were not comparative between 

seasons as the staff gage location varied from year to year. Standard CIAA procedures were 

followed for collecting these observations (CIAA, 2006). 

Smolt Enumeration 

To enumerate the smolt migration, a smolt trap was temporarily placed in Byers Creek just 

below the lake outlet. The smolt trap consisted of a modified fyke net with Vexar® netting leads 

and a double compartment live-box. The leads and fyke net funneled migrating smolt into the 

live-box. A swing gate remotely controlled by the trap operators directed smolt into one of two 

live-box compartments where they were enumerated and a smolt sample was collected. 

A total count of smolt migrating from the lake was made until the migration of fish exceeded 

1,000 to 2,000 fish per hour. At migrations rates greater than 2,000 fish per hour, fish densities 

in the trap become too great and the fish become stressed. To avoid stressing the fish during 

periods of peak migration, a 10% sub-sampling procedure was used to enumerate the fish. 

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To enumerate migrating smolt with the 10% sub-sampling procedure, the counting period was 

divided into 20-minute intervals. During each 20-minute interval, migrating fish were directed 

into the live-box for two minutes and counted. During the remaining 18 minutes, migrating 

smolt passed through the trap uncounted. To estimate the number of smolt migrating during the 

20-minute interval, the two-minute smolt count was multiplied by 10. 

Assuming the two-minute sub-sampling intervals were randomly distributed throughout subsampling 

1 and smolt moved through the weir randomly, the total smolt migration was estimated 

as follows: 

If: 

T 

c 

= 

number of fish counted with the total count procedure, 

Tˆ = 

s 

Tˆ = 

y = 

n = 

N = 

number of fish counted with the 10% sub-sampling procedure, 

the total smolt migration, 

the number of fish counted in each two minute sub-sampling interval, 

the number of two minute sub-sampling intervals sampled, and 

the number of possible two minute sub-sampling intervals, 

Then, the total smolt migration (Tˆ ) is: 

with a variance of: 

T 

T T 

c s ; 

v T N N n / N y y / n n 

s 

2 2 

i 

1 ; 

and 95% confidence limits of: 

Tˆ 2 v ˆ . 

s 

T s 

The variance about the estimated smolt migration, T , is equal to the variance about T s , because 

T c 

is a total count with 0 variance. 

1 Predetermined random 2-minute sampling intervals assured random distribution within each 20-minute period. 

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The smolt characteristics of Byers Lake were assessed by collecting a sample of the migrating 

smolts to determine length and weight characteristics of the population. During the 2007, 2008, 

and 2009 smolt migrations, sockeye samples were collected at an interval of n=40 per day and 

coho samples were collected at an interval of n=20 per day. Field personnel collected samples 

randomly throughout each day. Each smolt collected for evaluation was first measured to the 

nearest millimeter for fork length 2 and then weighed to the nearest 0.1 gram. Several scales were 

also removed from the primary growth area 3 and mounted on a glass slide for subsequent age 

determination. Scale samples were read by CIAA full-time staff at headquarters in Kenai. 

During the 2007 smolt migration, 601 sockeye smolt scale samples were collected and read. 

During the 2008 smolt migration, 451 sockeye smolt scales samples were collected and read. 

During the 2009 smolt migration, 1,079 sockeye smolt samples were collected and read. 

During the 2007 smolt migration, coho juvenile samples collected were all fry. During the 2008 

smolt migration, 427 coho smolt scales samples were collected and read. During the 2009 smolt 

migration, 515 sockeye smolt samples were collected and read. 

Adult Enumeration 

The escapement enumeration includes an assessment of the sex, age, and standard fork length 4 of 

the returning population of fish. To enumerate returning adult salmon and facilitate data 

collection, a counting weir was temporarily installed in Byers Creek in 2006, 2007, and 2008. 

The weir was constructed of 1.9 cm galvanized pipe and 7.6 cm aluminum channel. The 

galvanized pipe was picketed through 1.9 cm holes in the aluminum channel spaced 2.54 cm 

apart. 

Field personnel visually counted the adult fish as they ascended Byers Creek. By removing one 

or two pickets fish were permitted to pass through the weir. Initially counts were made at least 

twice a day. As the number of fish ascending Byers Creek increased, counts were made more 

2 Standard fork length was measured from the tip of the snout to the fork of the tail. 

3 The primary growth area is located above the lateral line on a diagonal from the posterior insertion of the dorsal fin to the anterior insertion of the anal fin. 

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frequently to prevent fish from accumulating behind the weir. Personnel also checked for 

ADF&G tags on adult sockeye passing through the weir. 

The adult characteristics of Byers Lake were assessed by collecting a sample of the migrating 

adult sockeye salmon to determine age, length, and sex characteristics of the population. During 

the 2006, 2007, and 2008 adult escapements, sockeye samples were randomly collected at an 

interval of n=40 per day. Each adult sockeye collected for evaluation was first measured to the 

nearest millimeter for standard fork length 4 , and estimated sex. For age evaluation, field 

personnel removed a scale from the primary growth area 3 . The fish were unharmed and released 

upstream. Scale samples were sent to the ADF&G Soldotna office for analysis. 

During the 2006 adult escapement, zero scale samples were analyzed for age. During the 2007 

adult escapement, 128 scale samples were analyzed for age. During the 2008 adult escapement, 

291 scale samples were analyzed for age. 

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3The primary growth area is located above the lateral line on a diagonal from the posterior insertion of the dorsal fin to the anterior insertion of the anal fin. 

4 Standard fork length was defined as the measurement from mid-eye to the fork of the tail. 

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RESULTS AND DISCUSSION 

Limnological Conditions 

Limnological conditions are a key component in understanding Byers Lake productivity and 

rearing conditions in this monitoring study. Water chemistry and zooplankton samples were 

conducted 2 times in 2006. In 2007, water chemistry and zooplankton samples were collected 4 

times. In 2008, water chemistry and zooplankton samples were collected 5 times. In 2009, 

water chemistry and zooplankton samples were collected 5 times. A summary of Limnological 

conditions is listed in Table 1. ADF&G Soldotna Lab provided the analysis for limnological 

conditions. 

Table 1 – Average open water season water quality characteristics of Byers Lake 

AVERAGE WATER QUALITY - 1 METER 

TP TFP FRP TKN NH3+NH4 NO2+NO3 RSi Org C Chla Phaeo EZD Sp. Cond pH Alk Turb Color Ca Mg Fe Secchi 

Year (ug/l) (ug/l) (ug/l) (ug/l) (ug/l) (ug/l) TN:TP (ug/l) (ug/l) (ug/l) (ug/l) Sta (m) (umhos/cm) (SU) (mg/l) (NTU) (Pt) (mg/l) (mg/l) (ug/l) Sta (meters) 

2006 7.7 4.1 3.8 145.3 12.0 447.1 170 :1 3,939 517 0.64 0.36 A - 35 6.4 11.7 1.1 15 4.9 0.2 64 A 4.1 

2007 7.1 3.6 3.7 123.9 12.8 293.8 130 :1 4,214 374 0.65 0.27 A 11.9 41 6.2 16.1 0.7 9 5.4 0.7 30 A 6.6 

2008 11.4 7.6 2.0 118.5 6.7 365.9 94 :1 3,760 143 0.50 0.26 A 11.0 38 6.7 15.6 0.4 11 4.8 0.7 46 A 5.4 

2009 14.6 10.7 1.5 152.1 11.9 405.7 84 :1 3,727 165 0.65 0.27 A 12.3 39 6.7 15.4 0.4 11 5.1 0.9 57 A 5.6 

AVERAGE WATER QUALITY - HYPOLIMNION 

TP TFP FRP TKN NH3+NH4 NO2+NO3 RSi Org C Chla Phaeo EZD Sp. Cond pH Alk Turb Color Ca Mg Fe Secchi 

Year (ug/l) (ug/l) (ug/l) (ug/l) (ug/l) (ug/l) TN:TP (ug/l) (ug/l) (ug/l) (ug/l) Sta (m) (umhos/cm) (SU) (mg/l) (NTU) (Pt) (mg/l) (mg/l) (ug/l) Sta (meters) 

2006 6.9 3.3 4.1 89.2 15.7 604.4 223 :1 4,419 591 0.19 0.18 B 7.5 38 6.4 13.0 0.7 13 5.0 0.3 75 B 5.1 

2007 7.3 3.8 4.0 118.5 21.3 401.8 158 :1 4,667 326 0.48 0.44 B 11.0 39 6.2 15.1 0.6 11 5.1 0.7 48 B 6.6 

2008 6.9 4.5 2.2 129.3 6.7 418.5 175 :1 3,898 123 0.61 0.41 B 10.6 38 6.7 15.4 0.5 11 5.0 0.7 48 B 5.6 

2009 8.8 5.0 1.5 131.8 8.2 432.1 141 :1 3,847 125 0.39 0.27 B 10.3 38 6.6 15.1 0.4 11 5.0 0.9 55 B 5.6 

EZD and Secchi provided by CIAA. 

Open water season only. 

Table 2 – Seasonal Mean Zooplankton Density and Biomass of Byers Lake 

Environmental Conditions 

Density 

Biomass 

Seasonal Mean Seasonal Weighted Mean 

Year (No/m2) (mg/m2) 

2006 269,964 770 

2007 196,575 575 

2008 190,547 317 

2009 242,892 748 

During the 2006 adult sockeye migration environmental conditions were monitored from 13 July 

to 16 August. Due to a delay in delivery of environmental apparatus, data was not recorded for 

stream stage measurements. Partial data was recorded for water and air temperatures. None of 

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the days were clear, 43% were partly cloudy, and 57% were completely overcast. Measurable 

rain was recorded on 22 days. A total of 1,786 mm of rain fell during this period. 

During the 2007 smolt migration, environmental conditions were monitored from 25 May to 25 

June. Stream stage measurements averaged 1.65 feet and ranged from 1.55 to 1.71 feet. Stream 

temperatures averaged 12 C and ranged from 7 to 18 C. Air temperatures averaged 21 C and 

ranged from 10 to 30 C. Three percent of the days were clear, 41% were partly cloudy, and 56% 

were completely overcast. Measurable rain was recorded on 20 days during the smolt migration. 

A total of 62 mm of rain fell during this period. 

During the 2007 adult escapement, environmental conditions were monitored from 16 July to 30 

August. Stream stage measurements averaged 1.26 feet and ranged from 1.15 to 1.90 feet. 

Stream temperatures averaged 20 C and ranged from 18 to 23 C. Air temperatures averaged 

18 C and ranged from 9 to 30 C. Four percent of the days were clear, 35% were partly cloudy, 

and 61% were completely overcast. Measurable rain was recorded on 25 days during the adult 

escapement. A total of 154 mm of rain fell during this period. 




ranged from 10 to 21 C. Four percent of the days were clear, 23% were partly cloudy, and 23% 



During the 2008 adult escapement, environmental conditions were monitored from 16 July to 26 

August. Stream stage measurements averaged 1.05 feet and ranged from 0.89 to 1.15 feet. 

Stream temperatures averaged 15 C and ranged from 12 to 20 C. Air temperatures averaged 

15 C and ranged from 10 to 21 C. None of the days were clear, 19% were partly cloudy, and 

52% were completely overcast. Measurable rain was recorded on 36 days during the adult 

escapement. A total of 188 mm of rain fell during this period. 

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ranged from 7 to 22 C. Nine percent of the days were clear, 18% were partly cloudy, and 45% 



Smolt Enumeration 


During this time 15,530 sockeye (O. nerka) and 982 coho (O. kisutch) smolts migrated from the 

lake. The 10% sub-sampling procedure was not used and all smolt were physically counted 

during the monitoring period. Based on the sockeye smolt samples collected, an estimated 99% 

(±0.001%) were age 1 and 1% (±3.5%) were age 2. The average length and weight of age 1 

sockeye smolt were 99 mm (±0.4 mm) and 8.5 g (±0.2 g). The average length and weight of age 

2 sockeye smolt were 102 mm (±3.5 mm) and 9.9 g (±3.1 g) 


During this time 6,470 sockeye (O. nerka) and 24,287 coho (O. kisutch) smolts migrated from 

the lake. The 10% sub-sampling procedure was not used and all smolt were physically counted 

during the monitoring period. Based on the sockeye smolt samples collected, an estimated 99% 

(±0.002%) were age 1 and 1% (±3.2%) were age 2. The average length and weight of age 1 

sockeye smolt were 90 mm (±0.8 mm) and 7.1 g (±1.9 g). The average length and weight of age 

2 sockeye smolt were 127 mm (±13 mm) and 18.7 g (±6.5 g). Other fish counted was 1 chinook 

(O. tshawytscha) smolt salmon. Based on the reported ice-out date on 20 May, there was an 

unknown number of fish which migrated before monitoring began. 


During this time, an estimated 14,800 sockeye (O. nerka) and 17,700 coho (O. kisutch) smolts 

migrated from the lake. The 10% sub-sampling procedure was not used and all smolt were 

physically counted during the monitoring period. Based on the sockeye smolt samples collected, 

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an estimated 99% (±0.001%) were age 1 and 1% (±1.7%) were age 2. The average length and 

weight of age 1 sockeye smolt were 93 mm (±0.4 mm) and 8.2g (±0.1 g). The average length 

and weight of age 2 sockeye smolt were 101 mm (±13.5 mm) and 10.5 g (±4.3 g). Other fish 

counted were 122 chinook (O. tshawytscha) smolt salmon. High water upon arrival on May 28 

in Byers Creek prevented the field crew from completing the set-up of the smolt trap. On June 2, 

the stream stage decreased in Byers Creek to complete the smolt trap set-up. 

Table 3 – Summary of Byers Lake sockeye salmon smolt characteristics 

Age Class (%) Mean length (mm) Mean weight (g) 

Smolt Age 95% Age 95% Age 95% Age 95% Age 95% Age 95% 

Year 1.0 C.I. 2.0 C.I. 1.0 C.I. 2.0 C.I. 1.0 C.I. 2.0 C.I. 

2007 99% (±0.001) 1% (±3.5) 99 (±0.4) 102 (±3.5) 8.5 (±0.2) 9.9 (±3.5) 

2008 99% (±0.002) 1% (±3.2) 90 (±0.8) 127 (±13) 7.1 (±1.9) 18.7 (±6.5) 

2009 99% (±0.001) 1% (±1.7) 93 (±0.4) 101 (±13.5) 8.2 (±0.1) 10.5 (±4.3) 

Mean 99% 1% 94 110 7.9 13.0 

Adult Enumeration 

The 2006 adult escapement was enumerated from 13 July and continued daily until 16 August 

when the weir became inoperable due to extreme flooding conditions. During this time 3,071 

adult sockeye (O. nerka) salmon returned to Byers Creek. Other fish counted during this time 

were 51 chinook (O. tshawytscha), 1,280 pink (O. gorbuscha) salmon, 49 chum (O. keta) 

salmon, and 9 dolly varden. 

Adult sockeye salmon characteristics were not evaluated during the 2006 field season. Field 

personnel collected 10 adult sockeye samples and were not sufficient to evaluate age analysis. 

ADF&G Gene Conservation Lab in Anchorage conducted a Finfish DNA Analysis to determine 

the genetic characteristics and profile of the sockeye population at Byers Lake. CIAA crew were 

instructed to randomly collect up to 200 axillary processes of adult sockeye salmon returning to 

the lake and samples were sent to ADF&G Gene Conservation Lab in Anchorage for analysis. 

ADF&G Gene Conservation Lab provided CIAA with sampling procedures. CIAA also assisted 

ADF&G Sport Division with a Sockeye Mark-Recapture PIT tag study. Field personnel scanned 

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PIT tags during the adult escapement. ADF&G Sport Division provided the procedures and 

analysis. 


August. During this time, 1,701 adult sockeye (O. nerka) returned to Byers Creek. Based on 

adult sockeye samples collected, 2.35% were age 0.3, 7.05% were age 1.2, 85.13% were age 1.3, 

2.35% were age 2.2 and 3.12% were age 2.3. Of the returning salmon population, 55% were 

male and 45% were female. The average length of adult sockeye population was 568 mm. The 

average length of adult sockeye males was 582 mm. The average length of adult sockeye 

females was 550 mm. Other fish counted during this time were 17 adult coho (O. kisutch) 

salmon, 12 adult chinook (O. tshawytscha) salmon, and 12 adult rainbow trout. 


August. During this time, 1,482 adult sockeye (O. nerka) salmon returned to Byers Creek. 


were age 1.3, 0.34% were age 1.4, 0.34% were age 2.2, and 5.83% were age 2.3. Of the 

returning salmon population, 58% were male and 42% were female. The average length of adult 

sockeye population was 573 mm. The average length of adult sockeye males was 582 mm. The 

average length of adult sockeye females was 560 mm. Other fish counted during this time were 

46 adult coho (O. kisutch) salmon, 20 adult chinook (O. tshawytscha) salmon, 7,711 adult pink 

(O. gorbuscha) salmon, 3 adult chum (O. keta), and 3 rainbow trout. A summary of 2006-2008 

adult sockeye characteristics is listed in Table 4. 

Table 4 - Summary of Byers Lake adult sockeye salmon characteristics 

Escapement 

Major Age Classes 

Male 

Female 

0.3 1.2 1.3 2.2 1.4 2.3 

Year Number (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) 

2006 3,071 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 

2007 1,701 55% 582 45% 550 2.35% 564 7.05% 499 85.13% 577 2.35% 490 3.12% 550 

2008 1,482 58% 582 42% 560 2.41% 587 6.17% 510 84.92% 576 0.34% 518 0.34% 559 5.83% 585 

Mean 2,085 57% 582 44% 555 2.38% 576 6.61% 505 85.03% 577 1.35% 504 0.34% 559 4.48% 568 

Min 1,482 55% 582 42% 550 2.35% 564 6.17% 499 84.92% 576 0.34% 490 0.34% 559 3.12% 550 

Max 3,071 58% 582 45% 560 2.41% 587 7.05% 510 85.13% 577 2.35% 518 0.34% 559 5.83% 585 

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RECOMMENDATIONS 

CIAA recommends extending the Byers Lake sockeye salmon monitoring study. The project 

should continue to collect data consistent with the previous study during smolt migrations and 

adult escapements to provide further comparative data. Based on the reported ice-out on 20 May 

2008, smolt migration monitoring should begin approximately 2 weeks earlier than previous 

monitoring years. Based on 2006-2008 adult monitoring periods, field crews could start 

operations approximately 2 weeks later in future years. 

15


16

LITERATURE CITED 

CIAA, 2006. Byers Lake Procedures Manual. Cook Inlet Aquaculture Association 40610 

Kalifornsky Beach Road Kenai, Alaska 99611, 20 pp. 

Koenings, J.P., J.A. Edmundson, J.M. Edmundson, and G.B. Kyle. 1986. Limnology Field and 

Laboratory Manual: Methods for Assessing Aquatic Production. Alaska Department of 

Fish and Game. Division of Fisheries Rehabilitation, Enhancement and Development. 

Soldotna, AK 222 pages. 

17


18

APPENDICES 

19


20

Appendix 1 Byers Lake 2006 – Macrozooplankton Density 

Site A - Depth 15 - 25 m 

Mean 

Seasonal Mean 

Date 1-Aug 5-Sep 22-Sep (No/m 2 ) (No/m 2 ) 

Epischura 

Cyclops 13,057 2,972 6,368 7,466 7,466 

Ovig .Cyclops 849 283 283 

Bosmina 95,541 92,569 59,857 82,656 82,656 

Ovig. Bosmina 637 849 637 708 708 

Daphnia l. 7,962 15,287 3,502 8,917 8,917 

Ovig. Daphnia l. 4,777 1,699 1,592 2,689 2,689 

Daphnia g. 18,790 42,887 212,685 91,454 91,454 

Ovig. Daphnia g. 12,739 40,340 73,230 42,103 42,103 

Total: 236,275 236,275 

Site B - Depth 40 

Mean 

Seasonal Mean 

Date 1-Aug 5-Sep 22-Sep (No/m 2 ) (No/m 2 ) 

Epischura 

Cyclops 75,584 33,439 7,132 38,718 38,718 

Ovig. Cyclops 2,123 708 708 

Bosmina 193,206 150,000 166,072 169,759 169,759 

Ovig. Bosmina 7,643 1,911 1,698 3,751 3,751 

Daphnia l. 12,739 16,561 11,207 13,502 13,502 

Ovig. Daphnia l. 12,739 1,911 5,094 6,581 6,581 

Daphnia g 11,465 51,274 109,696 57,478 57,478 

Ovig. Daphnia g. 5,520 20,701 13,245 13,155 13,155 

Total: 303,653 303,653 

21

Appendix 1 (cont’d) Byers Lake 2006 – Macrozooplankton Biomass (cont’d) 

Site A - Depth 15 - 25 m 

Body Size (mm) 

Biomass (mg/m 2 ) 

Seasonal 

Seasonal 

Weighted 

Weighted 

Date 1-Aug 5-Sep 22-Sep Mean Mean Mean Mean 

Epischura 

Cyclops 1.10 1.22 1.15 1.16 1.13 48 45 

Ovig .Cyclops 1.22 1.22 1.22 2 2 

Bosmina 0.71 0.86 0.88 0.82 0.81 193 188 

Ovig. Bosmina 1.25 1.23 1.24 1.24 1.24 4 4 

Daphnia l. 0.41 0.46 0.54 0.47 0.46 18 17 

Ovig. Daphnia l. 0.51 0.58 0.56 0.55 0.53 8 7 

Daphnia g. 0.53 0.72 0.72 0.66 0.71 169 198 

Ovig. Daphnia g. 0.76 0.93 1.04 0.91 0.98 158 184 

Total: 600 646 

Site B - Depth 40 


Seasonal 


Seasonal 

Weighted 

Weighted 

Date 1-Aug 5-Sep 22-Sep Mean Mean Mean Mean 

Epischura 

Cyclops 1.11 1.14 1.15 1.13 1.12 237 230 

Ovig .Cyclops 1.21 1.21 1.21 5 5 

Bosmina 0.80 0.81 0.85 0.82 0.82 400 399 

Ovig. Bosmina 1.24 1.26 1.22 1.24 1.24 21 21 

Daphnia l. 0.42 0.47 0.53 0.47 0.47 28 28 

Ovig. Daphnia l. 0.52 0.55 0.58 0.55 0.54 19 18 

Daphnia g. 0.58 0.66 0.79 0.68 0.74 113 137 

Ovig. Daphnia g. 0.81 0.95 1.01 0.92 0.95 51 54 

Total: 875 893 

22

Appendix 1 (cont’d) Byers Lake 2006 – Water Quality 

Date Sta Depth TP TFP FRP TKN NH3+NH4 NO2+NO3 RSi Org C Chla Phaeo EZD 

(m) (ug/l) (ug/l) (ug/l) (ug/l) (ug/l) (ug/l) TN:TP (ug/l) (ug/l) (ug/l) (ug/l) Sta (m) 

1-Aug B 1 4.5 3.4 3.5 120.2 5.9 482.6 297 :1 3,651 510 0.44 0.30 A - 

1-Aug B 30 4.6 3.2 4.0 78.6 10.4 648.4 350 :1 4,466 361 0.14 0.16 B 11.9 

6-Sep B 1 10.9 4.7 4.0 170.3 18.1 411.6 118 :1 4,227 523 0.83 0.41 A - 

6-Sep B 30 9.2 3.4 4.1 99.8 20.9 560.4 159 :1 4,372 821 0.23 0.20 B 3.0 

Mean 1 - Meter 7.7 4.1 3.8 145.3 12.0 447.1 170 :1 3,939 517 0.64 0.36 A - 

Min 4.5 3.4 3.5 120.2 5.9 411.6 262 :1 3,651 510 0.44 0.30 0.0 

Max 10.9 4.7 4.0 170.3 18.1 482.6 133 :1 4,227 523 0.83 0.41 0.0 

Mean Hypolimnion 6.9 3.3 4.1 89.2 15.7 604.4 223 :1 4,419 591 0.19 0.18 B 7.5 

Min 4.6 3.2 4.0 78.6 10.4 560.4 308 :1 4,372 361 0.14 0.16 3.0 

Max 9.2 3.4 4.1 99.8 20.9 648.4 180 :1 4,466 821 0.23 0.20 11.9 

Date Sta Depth Sp. Cond pH Alk Turb Color Ca Mg Fe Secchi 

(m) (umhos/cm) (SU) (mg/l) (NTU) (Pt) (mg/l) (mg/l) (ug/l) Sta (meters) 

1-Aug B 1 38 6.4 13.4 1.0 9 5.4 0.2 58 A 5.0 

1-Aug B 30 38 6.4 13.2 0.1 12 5.0 0.2 80 B 5.0 

6-Sep B 1 32 6.3 10.0 1.1 20 4.4 0.2 69 A 3.3 

6-Sep B 30 37 6.3 12.7 1.2 13 5.0 0.3 69 B 5.1 

Mean 1 - Meter 35 6.4 11.7 1 15 4.9 0.2 64 A 4.1 

Min 32 6.3 10.0 1 9 4.4 0.2 58 3.3 

Max 38 6.4 13.4 1 20 5.4 0.2 69 5.0 

Mean Hypolimnion 38 6.4 13.0 1 13 5.0 0.3 75 B 5.1 

Min 37 6.3 12.7 0 12 5.0 0.2 69 5.0 

Max 38 6.4 13.2 1 13 5.0 0.3 80 5.1 

23

Appendix 2 Byers Lake 2006 - Environmental Conditions 

Water Air 

Precip. Stage Temp. Temp. 

Date Sky (mm) (ft) Flow ( o C) ( o C) 

13-Jul 4 0 ND ND ND ND 











24-Jul 5 0 ND ND ND 19 

25-Jul 4 12 ND ND 18 17 

26-Jul 3 3 ND ND 19 21 

27-Jul 2 0 ND ND 19 24 

28-Jul 2 0 ND ND 18 23 

29-Jul 5 5 ND ND 18 13 

30-Jul 5 20 ND ND 18 11 

31-Jul 3 1 ND ND 18 16 

1-Aug 5 1 ND ND 18 13 

2-Aug 4 2 ND ND 16 15 

3-Aug 4 2 ND ND 17 16 

4-Aug 4 4 ND ND 18 16 

5-Aug 2 0 ND ND 18 22 

6-Aug 2 0 ND ND 19 26 

7-Aug 2 0 ND ND 19 25 

8-Aug 2 0 ND ND 18 26 

9-Aug 5 5 ND ND 18 14 

10-Aug 5 38 ND ND 17 11 

11-Aug 4 8 ND ND 17 12 

12-Aug 5 8 ND ND 17 12 

13-Aug 4 31 ND ND 17 13 

14-Aug 5 29 ND ND 16 11 

15-Aug 4 12 ND ND 15 13 

16-Aug 4 5 ND ND 16 14 

Total 1786 

Avg. 7.2 ND ND 18 17 

Min. 0.0 ND ND 15 11 

Max. 38.0 ND ND 19 26 

Summary of Cloud Cover - Percent of Days 

No. Meas. 

Partly 

Days Rain Overcast Cloudy Clear 

Adults 35 63% 57% 43% 0% 

1.0 = Clear 

2.0 = Cloud Cover 50% 

4.0 = Overcast 

5.0 = Rain 

ND = No Data 

24

Appendix 3 Byers Lake 2006 – Adult Escapement 

Sockeye 

Coho King Pink Chum Rainbow D.V. 

Daily Total Daily Daily Daily Daily Daily Daily 

Date Escapement Return Escapement Escapement Escapement Escapement Escapement Escapement 

13-Jul 0 0 0 0 0 0 0 0 

14-Jul 0 0 0 0 0 0 0 0 

15-Jul 0 0 0 0 0 0 0 0 

16-Jul 0 0 0 0 0 0 0 0 

17-Jul 0 0 0 0 0 0 0 0 

18-Jul 0 0 0 0 0 0 0 0 

19-Jul 0 0 0 0 0 0 0 0 

20-Jul 3 3 0 0 0 0 0 0 

21-Jul 0 3 0 0 0 0 0 0 

22-Jul 0 3 0 0 0 0 0 0 

23-Jul 0 3 0 2 0 0 0 0 

24-Jul 0 3 0 0 0 0 0 0 

25-Jul 0 3 0 0 0 0 0 0 

26-Jul 0 3 0 0 0 0 0 0 

27-Jul 0 3 0 0 0 0 0 0 

28-Jul 0 3 0 0 0 0 0 0 

29-Jul 0 3 0 0 0 0 0 0 

30-Jul 1 4 0 0 0 0 0 0 

31-Jul 9 13 0 0 0 0 0 0 

1-Aug 1 14 0 0 0 0 0 0 

2-Aug 14 28 0 1 0 0 0 0 

3-Aug 2 30 0 0 0 0 0 0 

4-Aug 32 62 0 0 2 0 0 0 

5-Aug 18 80 0 0 1 0 0 1 

6-Aug 49 129 0 0 0 0 0 0 

7-Aug 132 261 0 0 0 0 0 1 

8-Aug 816 1,077 0 5 3 0 0 4 

9-Aug 307 1,384 0 2 8 0 0 0 

10-Aug 811 2,195 0 6 409 33 0 0 

11-Aug 384 2,579 0 8 156 0 0 0 

12-Aug 54 2,633 0 1 22 1 0 0 

13-Aug 31 2,664 0 6 115 5 0 3 

14-Aug 148 2,812 0 9 154 6 0 0 

15-Aug 136 2,948 0 6 238 3 0 0 

16-Aug 123 3,071 0 5 172 1 0 0 

Total 3,071 0 51 1,280 49 0 9 

25

8-Jul 

18-Jul 

28-Jul 

7-Aug 

17-Aug 

27-Aug 

Sockeye 

Appendix 4 Byers Lake 2006 – Update 

Misc. Activities 

Adult Migration 

Ice-out: ND 

(approximate date) 

Dates: 13-Jul to 16-Aug 

Adult Crew On-site: 15-Jul 

No. % 

Adult Crew Off-site: 27-Aug 

Sockeyes: 3,701 100% 

Mortalities: 0 

Coho: 0 

King: 51 

Pink: 1,280 

Chum: 49 

Rainbow: 0 

Dolly Varden 9 

3500 

3000 

2500 

Byers Lake Adult Sockeye 

2000 

1500 

2006 

1000 

500 

0 

Date 

26


Site A 

Density (No/m 2 ) 

Seasonal Mean 

Date 11-Jun 16-Jul 21-Aug 19-Sep 24-Sep (No/m 2 ) 

Ergasilus 

Epischura 1,592 1,592 

Diaptomus 4,246 20,064 7,643 10,698 10,663 

Ovig. Diaptomus 637 891 764 

Cyclops 19,745 135,669 51,592 114,780 80,447 

Ovig. Cyclops 212 1,592 955 223 746 

Bosmina 29,936 3,822 446 11,401 

Ovig. Bosmina 955 1,274 223 817 

Daphnia l. 425 41,083 63,376 99,179 51,015 

Ovig. Daphnia l 11,783 9,554 18,944 13,427 

Daphnia r. 

Holopedium 7,643 955 4,299 

Ovig. Holopedium 

Total: 32,272 0 244,268 138,217 245,383 175,172 

Site B 


Seasonal Mean 

Date 11-Jun 16-Jul 21-Aug 19-Sep 24-Sep (No/m 2 ) 

Ergasilus 

Epischura 2,229 255 1,242 

Diaptomus 4,061 28,662 20,382 14,570 23,434 18,222 

Ovig. Diaptomus 1,274 1,194 764 1,077 

Cyclops 120,143 97,452 228,981 83,838 163,016 138,686 

Ovig. Cyclops 3,583 5,016 2,866 239 509 2,443 

Bosmina 4,538 21,019 47,452 2,627 1,274 15,382 

Ovig. Bosmina 478 1,274 1,528 1,093 

Daphnia l. 10,987 21,975 75,239 15,537 30,935 

Ovig. Daphnia l 717 3,822 5,494 3,057 3,272 

Daphnia r. 

Holopedium 10,510 4,777 1,592 5,626 


Total: 142,834 169,108 331,847 183,201 209,373 217,978 

27

Appendix 5 (cont’d) Byers Lake 2007 – Macrozooplankton Biomass 

Body Size (mm) Biomass (mg/m 2 ) 


Seasonal Seasonal 

Weighted Weighted 

Date 11-Jun 16-Jul 21-Aug 19-Sep 24-Sep Mean Mean Mean 

Ergasilus 

Epischura 13 

Diaptomus 0.60 1.18 1.19 1.16 1.03 0.56 65 

Ovig. Diaptomus 1.16 1.16 1.16 1.16 5 

Cyclops 0.92 0.76 0.64 0.66 0.75 0.39 163 

Ovig. Cyclops 1.32 1.28 1.31 1.24 1.29 1.29 4 

Bosmina 0.40 0.32 1.52 0.57 0.56 0.67 1.40 26 

Ovig. Bosmina 0.59 0.66 0.60 0.62 0.63 3 

Daphnia l. 0.87 0.79 0.82 0.83 0.64 148 

Ovig. Daphnia l 1.19 0.79 0.96 0.98 0.99 68 

Daphnia r. 

Holopedium 0.72 0.97 0.85 0.75 24 


Chydorinae 

Polyphemus 

Site A 

Total: 519 

Site B 

Body Size (mm) Biomass (mg/m 2 ) 


Seasonal Seasonal 

Weighted Weighted 

Date 11-Jun 16-Jul 21-Aug 19-Sep 24-Sep Mean Mean Mean 

Ergasilus 

Epischura 1.32 1.46 1.39 1.33 16 

Diaptomus 0.58 1.05 1.17 1.17 1.18 1.03 1.11 106 

Ovig. Diaptomus 1.17 1.24 1.15 1.19 1.19 7 

Cyclops 0.87 0.92 0.75 0.79 0.80 0.83 0.81 314 

Ovig. Cyclops 1.33 1.37 1.24 1.24 1.23 1.28 1.32 15 

Bosmina 0.45 0.60 0.36 0.51 0.56 0.50 0.44 31 

Ovig. Bosmina 0.55 0.67 0.53 0.58 0.59 3 

Daphnia l. 1.03 0.87 0.90 0.75 0.89 0.89 82 

Ovig. Daphnia l 1.22 1.21 1.05 1.10 1.15 1.12 18 

Daphnia r. 

Holopedium 0.76 0.70 0.88 0.78 0.75 38 

Ovig. Holopedium 1.06 1.06 0.00 

Total: 631 

28

Appendix 5 (cont’d) Byers Lake 2007 – Water Quality 



11-Jun B 1 6.8 3.6 3.5 141.4 11.0 326.0 152 :1 4,024 461 1.08 0.40 A 11.5 

11-Jun B 14 6.8 4.0 3.9 115.0 11.0 443.0 182 :1 4,230 243 0.71 0.59 B 10.2 

16-Jul B 1 5.3 3.0 2.8 112.5 11.0 335.0 187 :1 3,669 259 0.34 0.13 A 11.6 

16-Jul B 20 7.7 3.5 3.5 106.1 17.0 407.0 148 :1 4,297 292 0.40 0.35 B 11.6 

21-Aug B 1 5.1 2.7 3.7 145.3 8.9 256.0 174 :1 4,275 382 0.55 0.23 A 15.9 

21-Aug B 10 8.1 2.6 3.6 170.5 25.7 357.0 144 :1 4,784 500 0.45 0.34 B 13.4 

19-Sep B 1 11.2 5.0 4.7 96.4 20.1 258.0 70 :1 4,886 394 0.62 0.33 A 8.5 

19-Sep B 12 6.5 5.2 5.1 82.4 31.6 400.0 164 :1 5,357 270 0.37 0.47 B 8.8 

Mean 1 - Meter 7.1 3.6 3.7 123.9 12.8 293.8 130 :1 4,214 374 0.65 0.27 A 11.9 

Min 5.1 2.7 2.8 96.4 8.9 256.0 153 :1 3,669 259 0.34 0.13 8.5 

Max 11.2 5.0 4.7 145.3 20.1 335.0 95 :1 4,886 461 1.08 0.40 15.9 


Min 6.5 2.6 3.5 82.4 11.0 357.0 150 :1 4,230 243 0.37 0.34 8.8 

Max 8.1 5.2 5.1 170.5 31.6 443.0 168 :1 5,357 500 0.71 0.59 13.4 



11-Jun B 1 40 6.0 14.4 1.1 10 5.5 0.3 26 A 4.5 

11-Jun B 14 39 6.0 15.0 1.0 11 5.3 0.8 72 B 4.5 

16-Jul B 1 41 6.2 16.6 0.4 8 5.5 0.7 22 A 8.0 

16-Jul B 20 39 6.2 15.0 0.9 11 5.2 0.6 72 B 8.0 

21-Aug B 1 42 6.1 16.7 1.0 8 5.4 0.8 32 A 7.0 

21-Aug B 10 39 6.2 15.2 0.6 10 5.2 0.7 27 B 7.0 

19-Sep B 1 41 6.4 16.6 0.3 11 5.0 0.8 38 A 7.0 

19-Sep B 12 39 6.3 15.1 0.0 12 4.7 0.8 20 B 7.0 

Mean 1 - Meter 41 6.2 16.1 0.7 9 5.4 0.7 30 A 6.6 

Min 40 6.0 14.4 0.3 8 5.0 0.3 22 4.5 

Max 42 6.4 16.7 1.1 11 5.5 0.8 38 8.0 

Mean Hypolimnion 39 6.2 15.1 0.6 11.0 5.1 0.7 48 B 6.6 

Min 39 6.0 15.0 0.0 10.0 4.7 0.6 20 4.5 

Max 39 6.3 15.2 1.0 12.0 5.3 0.8 72 8.0 

29

Appendix 6 Byers Lake 2007- Environmental Conditions 

Smolt Migration 


Water Air Water Air 

Precip. Stage Temp. Temp. Precip. Stage Temp. Temp. 

Date Sky (mm) (ft) Flow ( o C) ( o C) Date Sky (mm) (ft) Flow ( o C) ( o C) 

25-May 2 0.0 1.61 ND 9 21 16-Jul 2 0.0 1.90 ND 22 24 

26-May 4 0.0 1.63 ND 9 18 17-Jul 2 0.0 1.15 ND 22 27 

27-May 5 5.5 1.69 ND 8 9.5 18-Jul 4 0.0 1.26 ND 22 19 

28-May 5 1.3 1.70 ND 7 15 19-Jul 4 0.0 1.28 ND 23 21 

29-May 4 7.5 1.70 ND 7 18 20-Jul 5 0.1 1.25 ND 21 15 

30-May 5 1.5 1.70 ND 7 17 21-Jul 5 1.0 1.23 ND 19 13 

31-May 4 2.5 1.70 ND 8 17 22-Jul 4 0.0 1.20 ND 20 20 

1-Jun 5 7.5 1.70 ND 8 19 23-Jul 3 0.0 1.19 ND 20 26 

2-Jun 5 1.2 1.70 ND 8 17 24-Jul 3 0.0 1.19 ND 21 25 

3-Jun 2 0.0 1.70 ND 10 20 25-Jul 2 0.0 1.15 ND 22 28 

4-Jun 5 3.3 1.71 ND 11 17 26-Jul 3 0.0 1.15 ND 22 30 

5-Jun 2 1.0 1.71 ND 9 21 27-Jul 4 0.0 1.15 ND 22 25 

6-Jun 5 2.8 1.70 ND 9 18 28-Jul 5 0.9 1.17 ND 21 15 

7-Jun 5 0.1 1.69 ND 9 15 29-Jul 5 20.6 1.20 ND 20 13 

8-Jun 2 1.1 1.69 ND 10 18 30-Jul 5 40.8 1.22 ND 19 10 

9-Jun 1 1.3 1.68 ND 12 24 31-Jul 5 8.2 1.22 ND 20 11 

10-Jun 2 0.0 1.66 ND 14 26 1-Aug 4 0.1 1.20 ND 20 20 

11-Jun 4 2.0 1.63 ND 12 20 2-Aug 5 0.9 1.20 ND 20 12 

12-Jun 5 0.5 1.66 ND 10 18 3-Aug 5 1.1 1.21 ND 19 14 

13-Jun 3 0.0 1.66 ND 10 23 4-Aug 5 0.6 1.21 ND 19 11 

14-Jun 2 0.0 1.62 ND 11 25 5-Aug 5 0.8 1.21 ND 20 10 

15-Jun 2 0.0 1.63 ND 16 27 6-Aug 5 30.7 1.40 ND 19 9 

16-Jun 2 0.0 1.60 ND 16 26 7-Aug 5 12.8 1.39 ND 19 9 

17-Jun 3 0.0 1.59 ND 15 27 8-Aug 4 0.4 1.25 ND 20 17 

18-Jun 3 0.0 1.60 ND 16 28 9-Aug 2 0.0 1.24 ND 20 23 

19-Jun 2 0.0 1.60 ND 17 29 10-Aug 1 0.0 1.24 ND 20 26 

20-Jun 2 0.0 1.55 ND 17 30 11-Aug 1 0.0 1.21 ND 20 27 

21-Jun 4 2.3 1.59 ND 18 23 12-Aug 5 0.3 1.23 ND 19 19 

22-Jun 5 6.8 1.60 ND 18 19 13-Aug 5 0.9 1.23 ND 19 20 

23-Jun 4 1.5 1.60 ND 17 23 14-Aug 5 0.6 1.23 ND 19 18 

24-Jun 5 10.0 1.60 ND 17 28 15-Aug 5 30.6 1.30 ND 19 19 

25-Jun 4 2.6 1.60 ND 18 25 16-Aug 2 0.3 1.30 ND 19 21 

Total 62 17-Aug 2 0.0 1.34 ND 19 23 

Avg. 1.9 1.65 ND 12 21 18-Aug 4 0.0 1.35 ND 19 16 

Min. 0.0 1.55 ND 7 10 19-Aug 4 0.0 1.35 ND 19 13 

Max. 10.0 1.71 ND 18 30 20-Aug 5 0.5 1.37 ND 18 12 

21-Aug 5 0.6 1.39 ND 18 14 

Ice out = ND 

22-Aug 5 0.1 1.40 ND ND 13 

23-Aug 3 0.3 1.27 ND ND 14 


24-Aug 5 0.0 1.29 ND ND 16 

No. Meas. Partly 

25-Aug 3 0.6 1.22 ND ND ND 

Days Rain Overcast Cloudy Clear 26-Aug 3 0.0 1.21 ND ND ND 

Smolts 32 63% 56% 41% 3% 27-Aug 2 0.2 1.20 ND ND ND 

Adults 46 54% 61% 35% 4% 28-Aug 2 0.0 1.20 ND ND ND 

29-Aug 2 0.0 1.20 ND ND ND 

1.0 = Clear 30-Aug 3 0.0 1.20 ND ND ND 

2.0 = Cloud Cover 50% Avg. 3.3 1.26 ND 20 18 

4.0 = Overcast Min. 0.0 1.15 ND 18 9 

5.0 = Rain Max. 23.4 1.90 ND 23 30 

ND = No Data 

30

Appendix 7 Byers Lake 2007 - Smolt Migration 

Sockeye Coho 

King 

Pink Chum Rainbow Dolly Varden 

Date Daily Mort. Total Daily Mort. Total Daily Total Daily Total Daily Total Daily Total Daily Total 

25-May 632 0 632 81 0 81 0 0 0 0 0 0 0 0 0 0 

26-May 721 0 1,353 65 0 65 0 0 0 0 0 0 0 0 0 0 

27-May 123 0 1,476 37 0 37 0 0 0 0 0 0 0 0 0 0 

28-May 0 0 1,476 0 0 0 0 0 0 0 0 0 0 0 0 0 

29-May 0 0 1,476 0 0 0 0 0 0 0 0 0 0 0 0 0 

30-May 0 0 1,476 0 0 0 0 0 0 0 0 0 0 0 0 0 

31-May 396 0 1,872 55 0 55 0 0 0 0 0 0 0 0 0 0 

1-Jun 0 0 1,872 0 0 0 0 0 0 0 0 0 0 0 0 0 

2-Jun 0 0 1,872 0 0 0 0 0 0 0 0 0 0 0 0 0 

3-Jun 133 0 2,005 9 0 9 0 0 0 0 0 0 0 0 0 0 

4-Jun 1,508 0 3,513 97 0 97 0 0 0 0 0 0 0 0 0 0 

5-Jun 1,129 0 4,642 416 0 416 0 0 0 0 0 0 0 0 0 0 

6-Jun 38 0 4,680 6 0 6 0 0 0 0 0 0 0 0 0 0 

7-Jun 0 0 4,680 2 0 2 0 0 0 0 0 0 0 0 0 0 

8-Jun 4 0 4,684 1 0 1 0 0 0 0 0 0 0 0 0 0 

9-Jun 2,444 0 7,128 15 0 15 0 0 0 0 0 0 0 0 0 0 

10-Jun 1,280 0 8,408 10 0 10 0 0 0 0 0 0 0 0 0 0 

11-Jun 1,429 0 9,837 5 0 5 0 0 0 0 0 0 0 0 0 0 

12-Jun 1,551 0 11,388 73 0 73 0 0 0 0 0 0 0 0 0 0 

13-Jun 1,731 0 13,119 44 0 44 0 0 0 0 0 0 0 0 0 0 

14-Jun 1,359 0 14,478 23 0 23 0 0 0 0 0 0 0 0 0 0 

15-Jun 114 0 14,592 4 0 4 0 0 0 0 0 0 0 0 0 0 

16-Jun 68 0 14,660 13 0 13 0 0 0 0 0 0 0 0 0 0 

17-Jun 414 0 15,074 0 0 0 0 0 0 0 0 0 0 0 0 0 

18-Jun 147 0 15,221 22 0 22 0 0 0 0 0 0 0 0 0 0 

19-Jun 274 0 15,495 3 0 3 0 0 0 0 0 0 0 0 0 0 

20-Jun 0 0 15,495 0 0 0 0 0 0 0 0 0 0 0 0 0 

21-Jun 31 0 15,526 1 0 1 0 0 0 0 0 0 0 0 0 0 

22-Jun 0 0 15,526 0 0 0 0 0 0 0 0 0 0 0 0 0 

23-Jun 0 0 15,526 0 0 0 0 0 0 0 0 0 0 0 0 0 

24-Jun 4 0 15,530 0 0 0 0 0 0 0 0 0 0 0 0 0 

25-Jun 0 0 15,530 0 0 0 0 0 0 0 0 0 0 0 0 0 

Total 15,530 982 0 0 0 0 0 

31


Sockeye 




16-Jul 0 0 0 2 0 0 0 0 

17-Jul 0 0 0 0 0 0 0 0 

18-Jul 0 0 0 0 0 0 0 0 

19-Jul 0 0 0 0 0 0 0 0 

20-Jul 0 0 0 0 0 0 0 0 

21-Jul 0 0 0 0 0 0 0 0 

22-Jul 0 0 0 0 0 0 0 0 

23-Jul 0 0 0 0 0 0 0 0 

24-Jul 0 0 0 0 0 0 0 0 

25-Jul 0 0 0 0 0 0 0 0 

26-Jul 0 0 0 0 0 0 0 0 

27-Jul 0 0 0 0 0 0 0 0 

28-Jul 0 0 0 0 0 0 0 0 

29-Jul 0 0 0 0 0 0 0 0 

30-Jul 0 0 0 0 0 0 0 0 

31-Jul 0 0 0 0 0 0 0 0 

1-Aug 0 0 0 0 0 0 0 0 

2-Aug 0 0 0 0 0 0 0 0 

3-Aug 0 0 0 0 0 0 0 0 

4-Aug 0 0 0 0 0 0 0 0 

5-Aug 0 0 0 0 0 0 0 0 

6-Aug 0 0 0 0 0 0 0 0 

7-Aug 0 0 0 0 0 0 0 0 

8-Aug 0 0 0 0 0 0 0 0 

9-Aug 1 1 0 0 0 0 0 0 

10-Aug 155 156 0 0 0 0 0 0 

11-Aug 39 195 0 0 0 0 0 0 

12-Aug 1 196 0 0 0 0 0 0 

13-Aug 177 373 0 0 0 0 0 0 

14-Aug 53 426 0 0 0 0 0 0 

15-Aug 38 464 1 0 0 0 0 0 

16-Aug 62 526 0 0 0 0 0 0 

17-Aug 57 583 0 2 0 0 0 0 

18-Aug 42 625 0 0 0 0 0 0 

19-Aug 75 700 0 5 0 0 0 0 

20-Aug 14 714 0 1 0 0 2 0 

21-Aug 20 734 0 0 0 0 0 0 

22-Aug 32 766 0 0 0 0 0 0 

23-Aug 201 967 0 0 0 0 6 0 

24-Aug 274 1,241 0 0 0 0 4 0 

25-Aug 50 1,291 1 0 0 0 0 0 

26-Aug 45 1,336 1 0 0 0 0 0 

27-Aug 309 1,645 8 2 0 0 0 0 

28-Aug 0 1,645 0 0 0 0 0 0 

29-Aug 26 1,671 1 0 0 0 0 0 

30-Aug 30 1,701 5 0 0 0 0 0 

Total 1,701 17 12 0 0 12 0 

32

Appendix 9 Byers Lake 2007 – Adult Sockeye Age Class 

Age Group 

0.3 1.2 1.3 2.2 2.3 Total 

Males 13 80 825 13 13 944 

Percent 0.76% 4.70% 48.50% 0.76% 0.76% 55.48% 

Sample Size 1 6 62 1 1 71 

Mean Lth (mm) 550 495 592 510 610 582 

Std. Error 19 4 2 

Females 27 40 623 27 40 757 

Percent 1.59% 2.35% 36.63% 1.59% 2.35% 44.51% 

Sample Size 2 3 47 2 3 57 

Mean Lth (mm) 570 507 557 480 530 550 

Std. Error 10 13 4 20 29 3 

Both Sexes 40 120 1,448 40 53 1,701 

Percent 2.35% 7.05% 85.13% 2.35% 3.12% 100.00% 

Sample Size 3 9 109 3 4 128 

Mean Lth (mm) 564 499 577 490 550 568 

Std. Error 10 13 3 20 29 3 

33

25-May 

29-May 

2-Jun 

6-Jun 

10-Jun 

14-Jun 

18-Jun 

22-Jun 

13-Jul 

18-Jul 

23-Jul 

28-Jul 

2-Aug 

7-Aug 

12-Aug 

17-Aug 

22-Aug 

27-Aug 

Smolt 

Adults 




Ice-out: ND 



Smolt Crew On-site: 25-May 

No. % 

Smolt Crew Off-site: 25-Jun 

Sockeyes: 1,701 100% 


Mortalities: 0 0.0% 


Age 1.2: 120 7.1% 

Age 1.3: 1,448 85.1% 

Smolt Migration Age 2.2: 40 2.4% 

Dates: 25-May to 25-Jun Age 2.3: 53 3.1% 

No. % Coho: 17 

Sockeyes: 15,530 100% King: 12 

Mortalities: 0 0% Pink: 0 

Age 1: 15,401 99% Chum: 0 

Age 2: 78 1% Rainbow: 12 

Coho: 982 Dolly Varden 0 

18,000 

16,000 

14,000 

Byers Lake Sockeye Smolt 

3,000 

2,500 

Byers Lake Sockeye Adults 

12,000 

10,000 

8,000 

6,000 

4,000 

2007 

2,000 

1,500 

1,000 

Avg 

2007 

2,000 

500 

0 

0 

34


Site A 


Seasonal Mean 

Date 29-May 19-Jun 15-Jul 14-Aug 17-Sep (No/m 2 ) 

Ergasilus 

Epischura 637 127 

Diaptomus 26,752 48,408 22,081 35,244 26,497 

Ovig. Diaptomus 212 849 212 

Cyclops 68,153 230,732 129,618 52,229 176,221 131,391 

Ovig. Cyclops 318 3,822 5,096 2,123 425 2,357 

Bosmina 1,115 3,822 24,522 7,006 9,342 9,161 

Ovig. Bosmina 159 318 425 180 

Daphnia l. 159 478 2,548 9,342 177,919 38,089 

Ovig. Daphnia l 637 1,699 50,106 10,488 

Daphnia r. 

Holopedium 637 20,064 6,688 212 5,520 

Ovig. Holopedium 2,389 1,274 733 

Total: 70,541 288,059 219,109 95,541 450,531 224,756 

Site B 


Seasonal Mean 

Date 29-May 19-Jun 15-Jul 14-Aug 17-Sep (No/m 2 ) 

Ergasilus 

Epischura 637 425 32 219 

Diaptomus 22,293 62,102 47,983 1,592 26,794 

Ovig. Diaptomus 1,274 159 287 

Cyclops 21,338 177,070 171,975 152,442 13,025 107,170 

Ovig. Cyclops 159 6,369 3,185 3,822 2,707 

Bosmina 318 3,185 17,197 8,917 255 5,974 

Ovig. Bosmina 318 32 70 

Daphnia l. 637 1,911 25,902 8,535 7,397 

Ovig. Daphnia l 637 1,699 1,369 741 

Daphnia r. 

Holopedium 159 11,783 10,828 849 4,724 

Ovig. Holopedium 318 955 255 

Total: 21,974 221,973 269,427 243,313 24,999 156,337 

35

Appendix 11 (cont’d) Byers Lake 2008 – Macrozooplankton Biomass 



Seasonal 

Seasonal 

Weighted 

Weighted 

Date 29-May 19-Jun 15-Jul 14-Aug 17-Sep Mean Mean Mean Mean 

Ergasilus 

Epischura 1.48 1.48 1.48 1 1 

Diaptomus 0.63 1.03 1.15 1.15 0.99 1.00 64 66 

Ovig. Diaptomus 1.29 1.22 1.26 1.23 1 1 

Cyclops 0.87 0.90 0.86 0.81 0.79 0.85 0.85 189 194 

Ovig. Cyclops 1.14 1.20 1.18 1.31 1.22 1.21 1.21 11 11 

Bosmina 0.46 0.39 0.49 0.43 0.54 0.46 0.48 2 2 

Ovig. Bosmina 0.48 0.82 0.60 0.63 0.66 0 0 

Daphnia l. 0.60 0.63 0.80 0.80 0.83 0.73 0.83 34 51 

Ovig. Daphnia l 1.07 1.11 1.12 1.10 1.12 36 38 

Daphnia r. 

Holopedium 0.34 0.98 0.81 0.84 0.74 0.92 5 11 

Ovig. Holopedium 1.28 1.01 1.15 1.19 3 3 

Chydorinae 

Polyphemus 

Site A 

Total: 346 378 

Site B 




Seasonal 


Seasonal 

Weighted 

Weighted 

Date 26-May 20-Jun 20-Aug 27-Sep Mean Mean Mean Mean 

Ergasilus 

Epischura 1.26 1.67 1.74 1.56 1.43 2 2 

Diaptomus 0.68 1.03 1.19 1.17 1.02 1.03 71 74 

Ovig. Diaptomus 1.25 1.20 1.23 1.24 1 1 

Cyclops 0.98 0.81 0.86 0.80 0.73 0.84 0.83 148 143 

Ovig. Cyclops 1.24 1.21 1.17 1.31 1.23 1.23 14 13 

Bosmina 0.40 0.39 0.49 0.43 0.56 0.45 0.46 1 1 

Ovig. Bosmina 0.55 0.62 0.59 0.56 0 0 

Daphnia l. 0.97 0.89 0.84 0.87 0.89 0.85 13 11 

Ovig. Daphnia l 1.41 0.94 1.05 1.13 1.06 3 2 

Daphnia r. 

Holopedium 0.38 0.99 0.69 0.71 0.69 0.84 3 7 

Ovig. Holopedium 1.24 1.00 1.12 1.06 1 1 

Total: 257 256 

36

Appendix 11 (cont’d) Byers Lake - Water Quality 



29-May B 1 6.1 3.4 2.5 129.5 10.1 490.5 225 :1 4,178 134 0.43 0.21 A 9.1 

29-May B 10 6.7 3.2 2.5 197.0 10.5 478.6 223 :1 4,036 98 0.37 0.17 B 8.2 

19-Jun B 1 14.6 7.5 2.1 116.1 6.9 425.7 82 :1 3,679 183 0.44 0.24 A - 

19-Jun B 10 7.5 4.0 2.5 96.0 9.5 499.0 176 :1 3,959 134 0.83 0.52 B 10.2 

15-Jul B 1 14.6 7.5 2.1 116.1 6.9 425.7 82 :1 3,577 139 0.37 0.24 A - 

15-Jul B 9 9.0 6.3 2.2 116.1 7.0 434.4 135 :1 3,745 160 0.73 0.59 B 11.2 

14-Aug B 1 11.9 11.3 1.6 124.9 5.4 258.3 71 :1 3,550 115 0.46 0.19 A 12.8 

14-Aug B 10 5.5 5.5 1.9 123.6 4.3 310.0 175 :1 3,705 106 0.64 0.37 B 12.1 

17-Sep B 1 9.9 8.1 1.9 106.0 4.4 229.2 75 :1 3,814 144 0.80 0.42 A - 

17-Sep B 10 6.0 3.5 2.1 113.6 2.2 370.7 179 :1 4,047 118 0.49 0.38 B 11.1 

Mean 1 - Meter 11.4 7.6 2.0 118.5 6.7 365.9 94 :1 3,760 143 0.50 0.26 A 11.0 

Min 6.1 3.4 1.6 106.0 4.4 229.2 122 :1 3,550 115 0.37 0.19 9.1 

Max 14.6 11.3 2.5 129.5 10.1 490.5 94 :1 4,178 183 0.80 0.42 12.8 


Min 5.5 3.2 1.9 96.0 2.2 310.0 163 :1 3,705 98 0.37 0.17 8.2 

Max 9.0 6.3 2.5 197.0 10.5 499.0 171 :1 4,047 160 0.83 0.59 12.1 



29-May B 1 37 6.5 14.8 0.5 13 4.9 0.4 38 A 5.0 

29-May B 10 38 6.5 15.2 0.8 13 4.9 0.7 56 B 6.0 

19-Jun B 1 35 6.8 14.3 0.5 11 4.7 0.6 39 A 5.0 

19-Jun B 10 38 6.7 14.5 0.8 12 4.9 0.6 46 B 6.0 

15-Jul B 1 38 6.8 16.5 0.8 10 4.7 0.8 40 A 6.0 

15-Jul B 9 38 6.8 15.6 0.4 11 5.0 0.6 33 B 6.0 

14-Aug B 1 39 6.8 15.5 0.2 10 4.8 1.0 58 A 6.0 

14-Aug B 10 39 6.8 15.5 0.2 10 5.2 0.9 58 B 6.0 

17-Sep B 1 40 6.8 16.8 0.2 10 5.0 0.9 56 A 5.0 

17-Sep B 10 39 6.7 16.2 0.3 11 4.9 0.9 49 B 4.0 

Mean 1 - Meter 38 6.7 15.6 0.4 11 4.8 0.7 46 A 5.4 

Min 35 6.5 14.3 0.2 10 4.7 0.4 38 5.0 

Max 40 6.8 16.8 0.8 13 5.0 1.0 58 6.0 

Mean Hypolimnion 38 6.7 15.4 0.5 11 5.0 0.7 48 B 5.6 

Min 38 6.5 14.5 0.2 10 4.9 0.6 33 4.0 

Max 39 6.8 16.2 0.8 13 5.2 0.9 58 6.0 

37

Appendix 12 Byers Lake 2008 – Environmental Conditions 



Water Air Water Air 

Precip. Stage Temp. Temp. Precip. Stage Temp. Temp. 

Date Sky (mm) (ft) Flow ( o C) ( o C) Date Sky (mm) (ft) Flow ( o C) ( o C) 

30-May 3 0.0 1.50 ND 4 14 16-Jul 4 2.5 0.89 ND 15 16 

31-May 3 0.5 1.54 ND 5 15 17-Jul 5 15.5 0.93 ND 15 12 

1-Jun 2 0.0 1.59 ND 5 15 18-Jul 4 11.7 1.04 ND 15 12 

2-Jun 4 0.0 1.58 ND 6 16 19-Jul 3 0.3 1.03 ND 20 17 

3-Jun 5 0.5 1.63 ND 6 10 20-Jul 5 2.0 0.96 ND 15 12 

4-Jun 4 3.8 1.60 ND 7 12 21-Jul 5 13.0 1.00 ND 15 10 

5-Jun 3 3.3 1.58 ND 7 13 22-Jul 4 16.5 1.08 ND 15 12 

6-Jun 3 0.5 1.50 ND 8 16 23-Jul 5 17.8 1.16 ND 15 11 

7-Jun 3 0.0 1.49 ND 9 17 24-Jul 3 3.6 1.19 ND 15 17 

8-Jun 4 0.0 1.46 ND 7 13 25-Jul 3 0.3 1.10 ND 17 21 

9-Jun 3 0.0 1.47 ND 8 16 26-Jul 5 4.8 1.06 ND 15 11 

10-Jun 3 0.0 1.46 ND 8 15 27-Jul 4 5.1 1.06 ND 14 14 

11-Jun 3 0.0 1.40 ND 8 14 28-Jul 4 0.8 1.04 ND 15 17 

12-Jun 2 0.0 1.40 ND 8 17 29-Jul 3 0.0 1.00 ND 17 20 

13-Jun 3 0.3 1.37 ND 11 21 30-Jul 4 0.3 1.00 ND 14 14 

14-Jun 3 1.0 1.34 ND 10 16 31-Jul 4 0.0 0.98 ND 14 13 

15-Jun 2 0.3 1.34 ND 10 15 1-Aug 4 0.4 1.00 ND 14 15 

16-Jun 3 0.0 1.34 ND 12 18 2-Aug 4 1.0 0.99 ND 12 13 

17-Jun 2 3.8 1.33 ND 12 20 3-Aug 3 4.3 1.03 ND 15 15 

18-Jun 2 0.0 1.34 ND 12 17 4-Aug 4 3.3 1.04 ND 14 11 

19-Jun 3 1.3 1.32 ND 11 17 5-Aug 5 15.2 1.10 ND 13 11 

20-Jun 3 0.0 1.28 ND 13 19 6-Aug 3 4.8 1.16 ND 15 18 

21-Jun 1 1.0 1.30 ND 13 18 7-Aug 2 0.8 1.13 ND 14 15 

22-Jun 5 9.1 1.29 ND 12 15 8-Aug 4 0.3 1.07 ND 15 14 

23-Jun 5 1.3 1.28 ND 12 14 9-Aug 4 6.6 1.10 ND 15 12 

24-Jun 2 12.7 1.29 ND 13 15 10-Aug 5 3.6 1.14 ND 14 13 

Total 39 11-Aug 2 2.5 1.13 ND 15 14 

Avg. 1.5 1.42 ND 9 16 12-Aug 3 0.1 1.11 ND 16 19 

Min. 0.0 1.28 ND 4 10 13-Aug 3 0.0 1.12 ND 15 19 

Max. 12.7 1.63 ND 13 21 14-Aug 3 2.0 1.12 ND 15 15 

15-Aug 3 2.5 1.10 ND 15 17 

Ice out = ND 

16-Aug 2 3.3 1.05 ND 15 15 

17-Aug 2 4.3 1.07 ND 14 14 


18-Aug 3 0.1 1.06 ND 16 17 

No. Meas. Partly 

19-Aug 2 0.0 1.03 ND 16 19 

Days Rain Overcast Cloudy Clear 20-Aug 2 0.0 1.01 ND 17 18 

Smolts 26 54% 23% 23% 4% 21-Aug 4 10.2 1.05 ND 16 14 

Adults 42 86% 52% 19% 0% 22-Aug 2 0.0 1.04 ND 16 17 

23-Aug 3 0.3 1.02 ND 16 15 

1.0 = Clear 24-Aug 2 20.3 1.03 ND 20 15 

2.0 = Cloud Cover 50% 26-Aug 4 6.4 1.00 ND 15 15 

4.0 = Overcast Total 188 

5.0 = Rain Avg. 4.5 1.05 ND 15 15 

Min. 0.0 0.89 ND 12 10 

ND = No Data 

Max. 20.3 1.19 ND 20 21 

38

Appendix 13 Byers Lake 2008 – Smolt Migration 

Sockeye Coho King 

Pink Chum Rainbow Dolly Varden 

Date Daily Mort. Total Daily Mort. Total Daily Total Daily Total Daily Total Daily Total Daily Total 

30-May 1,048 0 1,048 80 0 80 0 0 0 0 0 0 0 0 0 0 

31-May 868 0 1,916 83 0 163 0 0 0 0 0 0 0 0 0 0 

1-Jun 252 0 2,168 32 0 195 0 0 0 0 0 0 0 0 0 0 

2-Jun 212 0 2,380 193 0 388 0 0 0 0 0 0 0 0 0 0 

3-Jun 58 0 2,438 67 0 455 0 0 0 0 0 0 0 0 0 0 

4-Jun 33 0 2,471 61 0 516 0 0 0 0 0 0 0 0 0 0 

5-Jun 184 0 2,655 136 0 652 0 0 0 0 0 0 0 0 0 0 

6-Jun 214 0 2,869 44 0 696 0 0 0 0 0 0 0 0 0 0 

7-Jun 50 0 2,919 60 0 756 1 1 0 0 0 0 0 0 0 0 

8-Jun 26 0 2,945 123 0 879 0 1 0 0 0 0 0 0 0 0 

9-Jun 45 0 2,990 1,407 0 2,286 0 1 0 0 0 0 0 0 0 0 

10-Jun 70 0 3,060 671 0 2,957 0 1 0 0 0 0 0 0 0 0 

11-Jun 39 0 3,099 179 0 3,136 0 1 0 0 0 0 0 0 0 0 

12-Jun 31 0 3,130 185 0 3,321 0 1 0 0 0 0 0 0 0 0 

13-Jun 37 0 3,167 662 0 3,983 0 1 0 0 0 0 0 0 0 0 

14-Jun 165 0 3,332 1,770 0 5,753 0 1 0 0 0 0 0 0 0 0 

15-Jun 150 0 3,482 3,447 0 9,200 0 1 0 0 0 0 0 0 0 0 

16-Jun 160 0 3,642 2,694 0 11,894 0 1 0 0 0 0 0 0 0 0 

17-Jun 123 0 3,765 1,947 0 13,841 0 1 0 0 0 0 0 0 0 0 

18-Jun 120 0 3,885 1,324 0 15,165 0 1 0 0 0 0 0 0 0 0 

19-Jun 43 0 3,928 363 0 15,528 0 1 0 0 0 0 0 0 0 0 

20-Jun 26 0 3,954 234 0 15,762 0 1 0 0 0 0 0 0 0 0 

21-Jun 220 0 4,174 986 0 16,748 0 1 0 0 0 0 0 0 0 0 

22-Jun 1,577 0 5,751 5,972 0 22,720 0 1 0 0 0 0 0 0 0 0 

23-Jun 436 0 6,187 919 0 23,639 0 1 0 0 0 0 0 0 0 0 

24-Jun 283 0 6,470 648 0 24,287 0 1 0 0 0 0 0 0 0 0 

Total 6,470 0 6,470 24,287 0 24,287 1 0 0 0 0 

39


Sockeye 




16-Jul 0 0 0 2 0 0 0 0 

17-Jul 0 0 0 1 0 0 0 0 

18-Jul 0 0 0 0 0 0 0 0 

19-Jul 0 0 0 0 0 0 0 0 

20-Jul 0 0 0 3 0 0 0 0 

21-Jul 0 0 0 0 0 0 0 0 

22-Jul 0 0 0 0 0 0 0 0 

23-Jul 0 0 0 2 0 0 0 0 

24-Jul 0 0 0 0 0 0 0 0 

25-Jul 0 0 0 0 0 0 0 0 

26-Jul 0 0 0 0 0 0 0 0 

27-Jul 0 0 0 1 0 0 0 0 

28-Jul 0 0 0 0 0 0 0 0 

29-Jul 2 2 0 0 0 0 0 0 

30-Jul 0 2 0 0 0 0 0 0 

31-Jul 6 8 0 0 0 0 0 0 

1-Aug 0 8 0 0 0 0 0 0 

2-Aug 129 137 0 0 0 0 0 0 

3-Aug 47 184 0 0 0 0 0 0 

4-Aug 259 443 0 0 17 0 0 0 

5-Aug 50 493 0 0 5 0 0 0 

6-Aug 43 536 0 0 29 0 0 0 

7-Aug 222 758 0 0 96 0 1 0 

8-Aug 29 787 0 2 312 0 0 0 

9-Aug 33 820 0 1 223 0 0 0 

10-Aug 189 1,009 0 0 652 0 0 0 

11-Aug 54 1,063 0 0 579 0 0 0 

12-Aug 79 1,142 0 3 629 1 1 0 

13-Aug 64 1,206 1 1 1032 0 0 0 

14-Aug 30 1,236 2 2 983 0 1 0 

15-Aug 14 1,250 1 2 580 1 0 0 

16-Aug 26 1,276 0 0 880 1 0 0 

17-Aug 19 1,295 2 0 366 0 0 0 

18-Aug 16 1,311 1 0 130 0 0 0 

19-Aug 89 1,400 6 0 729 0 0 0 

20-Aug 9 1,409 0 0 23 0 0 0 

21-Aug 29 1,438 20 0 410 0 0 0 

22-Aug 6 1,444 2 0 20 0 0 0 

23-Aug 14 1,458 1 0 10 0 0 0 

24-Aug 7 1,465 3 0 4 0 0 0 

25-Aug 2 1,467 0 0 2 0 0 0 

26-Aug 15 1,482 7 0 0 0 0 0 

Total 1,482 46 20 7,711 3 3 0 

40

Appendix 15 Byers Lake 2008 – Adult Sockeye Age Class 

Age Group 

0.3 1.2 1.3 2.2 1.4 2.3 Total 

Males 26 41 733 5 0 56 860 

Percent 1.74% 2.75% 49.46% 0.34% 0.00% 3.75% 58.04% 

Sample Size 5 8 144 1 0 11 169 

Mean Lth (mm) 602 515 585 518 0 593 582 

Std. Error 6 8 2 0 8 2 

Females 10 51 526 0 5 31 622 

Percent 0.67% 3.42% 35.46% 0.00% 0.34% 2.08% 41.97% 

Sample Size 2 10 103 0 1 6 122 

Mean Lth (mm) 548 507 564 0 559 570 560 

Std. Error 15 7 2 0 4 2 

Both Sexes 36 91 1,259 5 5 86 1,482 

Percent 2.41% 6.17% 84.92% 0.34% 0.34% 5.83% 100.01% 

Sample Size 7 18 247 1 1 17 291 

Mean Lth (mm) 587 510 576 518 559 585 573 

Std. Error 6 5 1 5 1 

41

25-May 

29-May 

2-Jun 

6-Jun 

10-Jun 

14-Jun 

18-Jun 

22-Jun 

10-Jul 

15-Jul 

20-Jul 

25-Jul 

30-Jul 

4-Aug 

9-Aug 

14-Aug 

19-Aug 

24-Aug 

29-Aug 

Smolt 

Adults 




Ice-out: 20-May (approximate date) 



No. % 


Sockeyes: 1,482 


Mortalities: 0 


Age 1.2: 91 6.2% 

Age 1.3: 1,259 84.9% 

Smolt Migration Age 2.2: 5 0.3% 

Dates: 30-May to 24-Jun Age 2.3: 86 5.8% 

No. % Coho: 46 

Sockeyes: 6,470 100% King: 20 

Mortalities: 0 0.0% Pink: 7,711 

Age 1: 6,410 99% Chum: 3 

Age 2: 60 1% Rainbow: 3 

Coho: 24,287 Dolly Varden 0 

12,000 


2,500 

Byers Lake Sockeye Adults 

10,000 

8,000 

6,000 

4,000 

Avg 2008 

2,000 

1,500 

1,000 

Avg 2008 

2,000 

500 

0 

0 

42

Appendix 17 Byers Lake 2009 - Macrozooplankton Density 

Site A 


Seasonal Mean 

Date 29-May 23-Jun 29-Jul 24-Aug 2-Sep 17-Sep (No/m 2 ) 

Holopedium 1,051 20,764 8,280 764 611 6,294 

Cyclops 56,369 80,000 104,459 86,369 164,442 98,726 98,394 

Bosmina 860 6,115 46,178 23,312 28,579 2,654 17,950 

Daphnia l. 382 1,147 31,847 118,280 125,624 184,713 76,999 

Diaptomus 20,382 44,586 17,771 19,562 16,720 23,804 

Other Copes 2,038 153 1,858 1,350 

Total: 218,497 

Site B 


Seasonal Mean 

Date 29-May 23-Jun 29-Jul 24-Aug 2-Sep 17-Sep (No/m 2 ) 

Holopedium 1,529 37,070 15,032 15,032 204 318 11,531 

Cyclops 51,879 214,777 185,732 151,083 216,811 115,127 155,902 

Bosmina 1,911 16,815 64,459 38,217 44,422 3,662 28,248 

Daphnia l. 191 1,911 20,382 22,166 127,967 114,968 47,931 

Diaptomus 46,624 45,096 32,866 33,418 8,917 33,384 

Other Copes 4,586 408 478 1,824 

Total: 267,288 

43

Appendix 17 (cont’d) Byers Lake 2009 - Macrozooplankton Body Size & Biomass 

Site A 



Seasonal 

Weighted 

Date 29-May 23-Jun 29-Jul 24-Aug 2-Sep 17-Sep Mean 

Holopedium 0.38 2.21 1.90 1.06 0.65 1.24 

Cyclops 0.99 2.04 1.99 1.91 1.95 2.26 1.86 

Bosmina 0.82 0.45 1.01 1.08 1.08 1.12 0.93 

Daphnia l. 0.73 0.83 1.68 1.96 1.98 0.88 1.34 

Diaptomus 0.78 2.23 2.38 2.21 2.35 1.99 

Other Copes 0.50 1.74 1.57 1.27 

Site B 



Seasonal 

Weighted 


Holopedium 0.35 2.16 0.77 0.40 0.44 0.82 

Cyclops 2.21 1.98 1.93 2.00 1.99 2.09 2.03 

Bosmina 0.88421 0.442 0.92 1.09 1.06 1.08 0.91 

Daphnia l. 1.34 0.73 1.82 1.88 2.01 2.84 1.77 

Diaptomus 0.82 2.28 1.15 2.33 1.14 1.54 

Other Copes 0.52 2.10 0.99 1.20 

Site A & B 

Biomass (mg/m2) 

Biomass (mg/m2) 

Seasonal 

Weighted 


Holopedium 0.21 63.88 12.18 1.67 0.22 0.08 78 

Cyclops 30.31 60.39 53.36 40.70 60.62 38.65 284 

Bosmina 0.40 3.37 15.91 11.14 14.61 1.37 47 

Daphnia l. 0.10 0.63 11.17 38.06 78.69 83.69 212 

Diaptomus 0.00 12.88 44.30 26.22 27.07 13.03 123 

Other Copes 0.00 0.48 0.00 0.00 0.55 2.53 4 

Total: 748 

Appendix 17 (cont’d) Byers Lake 2009 - Water Quality 

44



29-May B 1 11.8 7.0 1.2 160.9 4.6 520.1 128 :1 3,650 218 0.99 0.46 A 12.3 

29-May B 30 8.7 5.2 1.1 145.3 5.0 494.6 163 :1 4,066 108 0.20 0.11 B 11.3 

23-Jun B 1 11.0 7.1 1.4 155.7 24.3 453.5 123 :1 3,679 139 0.59 0.24 A - 

23-Jun B 30 7.0 3.8 1.7 149.2 10.7 541.8 219 :1 3,970 117 0.18 0.16 B 9.5 

29-Jul B 1 16.1 11.5 1.3 157.5 9.9 456.9 85 :1 3,969 167 0.39 0.19 A - 

29-Jul B 8 9.3 5.1 1.2 122.5 7.7 431.7 132 :1 3,766 146 0.48 0.38 B 11.4 

24-Aug B 1 12.8 9.8 1.6 138.0 8.4 301.7 76 :1 3,608 176 0.55 0.20 A - 

24-Aug B 10 9.1 5.1 1.5 124.5 7.4 423.3 133 :1 3,671 134 0.54 0.30 B 8.8 

17-Sep B 1 21.4 18.0 2.0 148.4 12.2 296.5 46 :1 3,727 125 0.74 0.25 

17-Sep B 10 10.1 5.8 2.2 117.3 10.3 268.9 85 :1 3,763 119 0.56 0.41 

Mean 1 - Meter 14.6 10.7 1.5 152.1 11.9 405.7 84 :1 3,727 165 0.65 0.27 A 12.3 

Min 11.0 7.0 1.2 138.0 4.6 296.5 87 :1 3,608 125 0.39 0.19 12.3 

Max 21.4 18.0 2.0 160.9 24.3 520.1 70 :1 3,969 218 0.99 0.46 12.3 


Min 7.0 3.8 1.1 117.3 5.0 268.9 122 :1 3,671 108 0.18 0.11 8.8 

Max 10.1 5.8 2.2 149.2 10.7 541.8 151 :1 4,066 146 0.56 0.41 11.4 



29-May B 1 33 6.7 13.9 0.6 13 4.9 1.0 64 A 3.5 

29-May B 30 36 6.6 14.4 0.4 12 5.0 0.9 66 B 4.0 

23-Jun B 1 38 6.6 14.4 0.2 11 4.6 0.9 49 A 7.5 

23-Jun B 30 38 6.6 14.2 0.4 12 5.2 0.7 60 B 7.0 

29-Jul B 1 41 6.7 15.6 0.3 9 5.2 0.9 51 A 6.5 

29-Jul B 8 39 6.6 14.8 0.3 10 4.9 0.9 40 B 6.5 

24-Aug B 1 42 6.8 16.9 0.5 10 5.1 0.9 64 A 5.0 

24-Aug B 10 40 6.7 16.2 0.5 11 5.0 0.9 56 B 5.0 

17-Sep B 1 41 6.7 16.2 0.4 11 5.5 0.9 55 

17-Sep B 10 39 6.5 15.7 0.3 11 5.1 0.9 55 

Mean 1 - Meter 39 6.7 15.4 0.4 11 5.1 0.9 57 A 5.6 

Min 33 6.6 13.9 0.2 9 4.6 0.9 49 3.5 

Max 42 6.8 16.9 0.6 13 5.5 1.0 64 7.5 

Mean Hypolimnion 38 6.6 15.1 0.4 11 5.0 0.9 55 B 5.6 

Min 36 6.5 14.2 0.3 10 4.9 0.7 40 4.0 

Max 40 6.7 16.2 0.5 12 5.2 0.9 66 7.0 

Appendix 18 Byers Lake 2009 – Environmental Conditions 

45

Water Air 

Precip. Stage Temp. Temp. 

Date Sky (mm) (ft) Flow ( o C) ( o C) 

28-May 5 ND 2.22 ND ND ND 

29-May 4 0 2.11 ND ND ND 

30-May 4 14 1.88 ND 5 10 

31-May 4 10 1.81 ND 7 7 

1-Jun 3 0 1.75 ND 6 14 

2-Jun 3 0 1.70 ND 8 14 

3-Jun 1 0 1.74 ND 9 22 

4-Jun 4 0 1.79 ND 9 21 

5-Jun 4 0 1.74 ND 9 16 

6-Jun 3 0 1.70 ND 10 18 

7-Jun 1 0 1.69 ND 12 21 

8-Jun 4 0 1.62 ND 9 21 

9-Jun 1 0 1.62 ND 13 21 

10-Jun 2 0 1.56 ND 14 20 

11-Jun 2 0 1.57 ND 9 16 

12-Jun 4 0 1.52 ND 11 13 

13-Jun 4 2 1.44 ND 12 13 

14-Jun 2 1 1.41 ND 12 18 

15-Jun 3 0 1.35 ND 14 17 

16-Jun 3 0 1.33 ND 12 19 

17-Jun 4 0 1.25 ND 11 12 

18-Jun 2 0 1.23 ND 13 17 

19-Jun 2 0 1.18 ND 13 19 

20-Jun 5 2 1.18 ND 12 9 

21-Jun 4 1 1.18 ND 13 11 

22-Jun 4 0 1.15 ND 12 12 

23-Jun 4 10 1.18 ND 11 8 

24-Jun 4 1 1.16 ND 11 10 

25-Jun 2 0 1.14 ND 12 16 

26-Jun 3 0 1.10 ND 12 16 

27-Jun 3 0 1.08 ND 14 20 

28-Jun 3 0 1.07 ND 14 19 

29-Jun 3 0 1.06 ND 14 19 

Total 42 

Avg. 1.3 1.47 ND 11 16 

Min. 0.0 1.06 ND 5 7 

Max. 13.5 2.22 ND 14 22 

Ice out = ND 


No. Meas. 

Partly 

Days Rain Overcast Cloudy Clear 

Smolts 33 36% 45% 18% 9% 

1.0 = Clear 

2.0 = Cloud Cover 50% 

4.0 = Overcast 

5.0 = Rain 

ND = No Data 

Appendix 19 Byers Lake 2009 - Smolt Migration 

46

Sockeye Coho King Pink Chum Rainbow 

Date Daily Mort. Total Daily Mort. Total Daily Total Daily Total Daily Total Daily Total 

28-May 105 0 105 4 0 4 28 28 0 0 0 0 0 0 

29-May 3 0 108 14 0 18 8 36 0 0 0 0 0 0 

30-May 1 0 109 7 0 25 4 40 0 0 0 0 0 0 

31-May 1 0 110 2 0 27 3 43 0 0 0 0 0 0 

1-Jun 2 0 112 4 0 31 9 52 0 0 0 0 0 0 

2-Jun 335 0 447 193 0 224 69 121 0 0 0 0 0 0 

3-Jun 184 0 631 149 0 373 0 121 0 0 0 0 0 0 

4-Jun 326 0 957 516 0 889 1 122 0 0 0 0 0 0 

5-Jun 178 0 1,135 584 0 1,473 0 122 0 0 0 0 0 0 

6-Jun 214 0 1,349 796 0 2,269 0 122 0 0 0 0 0 0 

7-Jun 227 0 1,576 274 0 2,543 0 122 0 0 0 0 0 0 

8-Jun 404 0 1,980 1,377 0 3,920 0 122 0 0 0 0 0 0 

9-Jun 848 0 2,828 1,164 0 5,084 0 122 0 0 0 0 0 0 

10-Jun 629 0 3,457 744 0 5,828 0 122 0 0 0 0 0 0 

11-Jun 970 0 4,427 1,935 0 7,763 0 122 0 0 0 0 0 0 

12-Jun 223 0 4,650 1,317 0 9,080 0 122 0 0 0 0 0 0 

13-Jun 115 0 4,765 662 0 9,742 0 122 0 0 0 0 0 0 

14-Jun 1,427 0 6,192 1,381 0 11,123 0 122 0 0 0 0 0 0 

15-Jun 2,292 0 8,484 1,084 0 12,207 0 122 0 0 0 0 0 0 

16-Jun 382 0 8,866 504 0 12,711 0 122 0 0 0 0 0 0 

17-Jun 992 0 9,858 585 0 13,296 0 122 0 0 0 0 0 0 

18-Jun 778 0 10,636 960 0 14,256 0 122 0 0 0 0 0 0 

19-Jun 547 0 11,183 445 0 14,701 0 122 0 0 0 0 0 0 

20-Jun 485 0 11,668 396 0 15,097 0 122 0 0 0 0 0 0 

21-Jun 452 0 12,120 203 0 15,300 0 122 0 0 0 0 0 0 

22-Jun 464 0 12,584 387 0 15,687 0 122 0 0 0 0 0 0 

23-Jun 604 0 13,188 632 0 16,319 0 122 0 0 0 0 0 0 

24-Jun 752 0 13,940 642 0 16,961 0 122 0 0 0 0 0 0 

25-Jun 529 0 14,469 360 0 17,321 0 122 0 0 0 0 0 0 

26-Jun 126 0 14,595 104 0 17,425 0 122 0 0 0 0 0 0 

27-Jun 48 0 14,643 77 0 17,502 0 122 0 0 0 0 0 0 

28-Jun 16 0 14,659 28 0 17,530 0 122 0 0 0 0 0 0 

29-Jun 141 0 14,800 170 0 17,700 0 122 0 0 0 0 0 0 

Total 14,800 0 14,800 17,700 0 17,700 122 0 0 0 


47

19-May 

23-May 

27-May 

31-May 

4-Jun 

8-Jun 

12-Jun 

16-Jun 

20-Jun 

24-Jun 

28-Jun 

Smolt 



Ice-out: ND 


Dates: 28-May to 29-Jun 


No. % 


Sockeyes: 14,800 100% 

Mortalities: 0 0% 

Age 1: 14,648 99% 

Age 2: 138 1% 

Coho: 17,700 

16,000 

14,000 


12,000 

10,000 

Avg 2009 

8,000 

6,000 

4,000 

2,000 

0 

Appendix 21 Byers Lake – Historical sockeye smolt migrations 

48

Date 2007 2008 2009 

19-May 0 0 0 

20-May 2 0 0 

21-May 7 0 0 

22-May 9 0 0 

23-May 10 0 0 

24-May 12 0 0 

25-May 632 0 0 

26-May 1,353 0 0 

27-May 1,476 0 0 

28-May 1,476 0 0 

29-May 1,476 0 0 

30-May 1,476 1,048 109 

31-May 1,872 1,916 110 

1-Jun 1,872 2,168 112 

2-Jun 1,872 2,380 447 

3-Jun 2,005 2,438 631 

4-Jun 3,513 2,471 957 

5-Jun 4,642 2,655 1,135 

6-Jun 4,680 2,869 1,349 

7-Jun 4,680 2,919 1,576 

8-Jun 4,684 2,945 1,980 

9-Jun 7,128 2,990 2,828 

10-Jun 8,408 3,060 3,457 

11-Jun 9,837 3,099 4,427 

12-Jun 11,388 3,130 4,650 

13-Jun 13,119 3,167 4,765 

14-Jun 14,478 3,332 6,192 

15-Jun 14,592 3,482 8,484 

16-Jun 14,660 3,642 8,866 

17-Jun 15,074 3,765 9,858 

18-Jun 15,221 3,885 10,636 

19-Jun 15,495 3,928 11,183 

20-Jun 15,495 3,954 11,668 

21-Jun 15,526 4,174 12,120 

22-Jun 15,526 5,751 12,584 

23-Jun 15,526 6,187 13,188 

24-Jun 15,530 6,470 13,940 

25-Jun 14,469 

26-Jun 14,595 

27-Jun 14,643 

28-Jun 14,659 

29-Jun 14,841 

Total 15,530 6,470 14,841 

Avg 12,280 

Appendix 22 Byers Lake – Historical adult sockeye migrations 

49

Date 2006 2007 2008 

10-Jul 

11-Jul 

12-Jul 

13-Jul 0 

14-Jul 0 

15-Jul 0 

16-Jul 0 0 0 

17-Jul 0 0 0 

18-Jul 0 0 0 

19-Jul 0 0 0 

20-Jul 3 0 0 

21-Jul 3 0 0 

22-Jul 3 0 0 

23-Jul 3 0 0 

24-Jul 3 0 0 

25-Jul 3 0 0 

26-Jul 3 0 0 

27-Jul 3 0 0 

28-Jul 3 0 0 

29-Jul 3 0 2 

30-Jul 4 0 2 

31-Jul 13 0 8 

01-Aug 14 0 8 

02-Aug 28 0 137 

03-Aug 30 0 184 

04-Aug 62 0 443 

05-Aug 80 0 493 

06-Aug 129 0 536 

07-Aug 261 0 758 

08-Aug 1,077 0 787 

09-Aug 1,384 1 820 

10-Aug 2,195 156 1,009 

11-Aug 2,579 195 1,063 

12-Aug 2,633 196 1,142 

13-Aug 2,664 373 1,206 

14-Aug 2,812 426 1,236 

15-Aug 2,948 464 1,250 

16-Aug 3,071 526 1,276 

17-Aug 583 1,295 

18-Aug 625 1,311 

19-Aug 700 1,400 

20-Aug 714 1,409 

21-Aug 734 1,438 

22-Aug 766 1,444 

23-Aug 967 1,458 

24-Aug 1,241 1,465 

25-Aug 1,291 1,467 

26-Aug 1,336 1,482 

27-Aug 1,645 

28-Aug 1,645 

29-Aug 1,671 

30-Aug 1,701 

Total 3,071 1,701 1,482 

Avg 2,085 

50


51

Chenik Lake - Cook Inlet Aquaculture Association, Kenai, Alaska

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