NOAA Technical Memorandum NMFS-NWFSC-51

Ecology of Marine Predatory

and Prey Fishes

off the Columbia River,

1998 and 1999

October 2001

U.S. DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration

National Marine Fisheries Service
NOAA Technical Memorandum

 NMFS Series

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has since been split into the Northwest Fisheries

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series is now being used by the Alaska Fisheries

Science Center.

Reference throughout this document to trade names

does not imply endorsement by the National Marine

Fisheries Service, NOAA.

This document should be cited as follows:

Emmett, R.L., P.J. Bentley, and G.K. Krutzikowsky.

2001. Ecology of marine predatory and prey fishes

off the Columbia River, 1998 and 1999. U.S. Dept.

Commer., NOAA Tech. Memo. NMFS-NWFSC-51,

108 p.
NOAA Technical Memorandum NMFS-NWFSC-51

Ecology of Marine Predatory

and Prey Fishes

off the Columbia River,

1998 and 1999

Robert L. Emmett, Paul J. Bentley,

and Gregory K. Krutzikowsky*

Northwest Fisheries Science Center

Fish Ecology Division

2725 Montlake Boulevard East

Seattle, Washington 98112

*Cooperative Institute for Marine Resource Studies

Mark O. Hatfield Marine Science Center

Oregon State University

2030 S.E. Marine Science Drive

Newport, Oregon 97365

October 2001

U.S. DEPARTMENT OF COMMERCE

Donald L. Evans, Secretary

National Oceanic and Atmospheric Administration

Scott B. Gudes, Acting Administrator

National Marine Fisheries Service

William T. Hogarth, Assistant Administrator for Fisheries
ii

Most NOAA Technical Memorandums NMFS-NWFSC are

available on-line at the Northwest Fisheries Science Center

web site (http://www.nwfsc.noaa.gov)

Copies are also available from:

National Technical Information Service

5285 Port Royal Road

Springfield, VA 22161

phone orders (1-800-553-6847)

e-mail orders (orders@ntis.fedworld.gov)
iii

CONTENTS

LIST OF FIGURES...................................................................................................................... v

LIST OF TABLES ..................................................................................................................... vii

EXECUTIVE SUMMARY......................................................................................................... ix

ACKNOWLEDGMENTS........................................................................................................... xi

INTRODUCTION........................................................................................................................ 1

METHODS................................................................................................................................... 3

RESULTS..................................................................................................................................... 7

DISCUSSION ............................................................................................................................ 22

CITATIONS............................................................................................................................... 25

APPENDIX 1: SUMMARY OF TRAWL DATA .................................................................... 29

APPENDIX 2: TEMPERATURE AND SALINITY PROFILES............................................. 87
iv
v

LIST OF FIGURES

Figure 1. The location of surface trawls conducted in 1998 (A, 72 trawls), and 1999 (B, 113 trawls) to

collect predatory fishes of juvenile salmon and associated species............................................. 6

Figure 2. Length frequency distribution of Pacific hake (Merluccius productus) captured off the mouth

of the Columbia River by surface trawl in 1998 (A) and 1999 (B). .......................................... 13

Figure 3. Length frequency distribution of chub mackerel (Scomber japonicus) captured off the mouth of

the Columbia River by surface trawl in 1998 and 1999............................................................. 14

Figure 4. Length frequency distribution of jack mackerel (Trachurus symmetricus) captured off the

mouth of the Columbia River by surface trawl in 1998 and 1999. ............................................ 15

Figure 5. Length frequency of northern anchovy (Engraulis mordax) and Pacific sardine (Sardinops

sagax) collected off the Columbia River by surface trawl, during April through July 1998 and

1999. Both years combined....................................................................................................... 16

Figure 6. Length frequency of Pacific herring (Clupea pallasi) collected off the mouth of the Columbia

River by surface trawl during 1998 and 1999............................................................................ 17

Figure 7. Average sea-surface salinities and temperatures at surface trawl stations during sampling

cruises in 1998 and 1999............................................................................................................ 19
vi
vii

LIST OF TABLES

Table 1. Type and size of fishing gear used to collect fish off the Columbia River in 1998 and 1999..........4

Table 2. Total number of fishes captured during predation cruises in 1998 and 1999 off the mouth of the

Columbia River. ...............................................................................................................................8

Table 3. Number of baitfish (Pacific sardine [Sardinops sagax], northern anchovy [Engraulis mordax],

Pacific herring [Clupea pallasi], and smelt), predators (Pacific hake [Merluccius productus],

chub mackerel [Scomber japonicus], jack mackerel [Trachurus symmetricus], and sharks), and

other fishes captured during pelagic trawling surveys off the mouth of the Columbia River in

1998 and 1999. ...............................................................................................................................10

Table 4. Number of predatory fish stomachs taken quantitatively and examined qualitatively to estimate

predation of juvenile salmonids off the mouth of the Columbia River, 1998 and 1999. ...............11

Table 5. Results of onboard qualitative examinations of 2,910 predator stomachs collected off the mouth

of the Columbia River, 1998 and 1999. .........................................................................................12

Table 6. Near surface (1-m depth) salinity and temperature along two transect lines off the Columbia

River mouth, April–July 1999........................................................................................................20
viii
ix

EXECUTIVE SUMMARY

The National Marine Fisheries Service surface-trawled off the mouth of the Columbia

River from April through July 1998 and 1999 to identify the pelagic fish community during the

spring salmonid smolt migration period and to collect information on the feeding habits of

predatory fishes. Preliminary results indicate that baitfish, primarily Pacific sardine (Sardinops

sagax) and Pacific herring (Clupea pallasi), numerically dominate this nearshore community.

Important fish predators, Pacific hake (Merluccius productus), jack mackerel (Trachurus

symmetricus), and chub mackerel (Scomber japonicus), are at times abundant. Initial food-habit

studies have not identified direct predation on salmonids. However, potential indirect effects of

the changing pelagic fish community associated with different oceanographic regimes on

juvenile salmonids are presented.
x
xi

ACKNOWLEDGMENTS

Special thanks are due to Dan Parker, Captain of the FV Sea Eagle, for his willingness to

work with us on these surveys. His encouragement and skill with fishing gear and equipment

made this research possible. We also thank the crew of the FV Sea Eagle. Tim Hall and Ron

Lowe made setting the trawl look easy and the cruises always interesting. Finally, thanks to

Susan Hinton for providing logistical and moral support that enabled us to maintain intense

ocean sampling schedules in 1998 and 1999.
xii
INTRODUCTION

Ocean survival of salmonids from the Columbia and other Northwest rivers has declined

markedly in the last 20 years (Hilborn and Coronado 1997, Coronado and Hilborn 1998), with

some salmon returns less than necessary to maintain run sizes. To rebuild and maintain salmon

runs, resource agencies have spent considerable funds ameliorating negative anthropogenic

influences by restoring freshwater habitats, improving dam passage, releasing hatchery produced

salmon, and other activities. However, these measures have met with limited success. There is

increasing information that ocean survival plays a significant role in determining eventual adult

salmon returns. Moreover, the Pacific Ocean off the Northwest appears to undergo cyclic

“regime” shifts every 20–30 years, with contrasting environmental conditions resulting in

contrasting favorability for salmonid production (Francis and Hare 1994, Mantua et al. 1997,

Francis et al. 1998). In the present cycle, which began in 1977, ocean salmonid survival, and

thus salmon populations, are high in Alaska but low in the Pacific Northwest (Hare et al. 1999).

While salmonid ocean survival appears to be related to primary and secondary ocean production

(Brodeur and Ware 1992, Polovina et al. 1995, Roemmich and McGowan 1995, Brodeur et al.

1996), the actual mechanisms controlling salmonid ocean survival are undetermined.

Research indicates that ocean survival of salmonids is evidently determined very early

during their ocean residency, with predation thought to be a major influence (Fisher and Pearcy

1988; Pearcy 1988, 1992). Supporting this conclusion was Pearcy’s (1988) discovery that

average ocean purse-seine catches of coho salmon (Oncorhynchus kisutch) in June correlated

closely with coho salmon jack counts (and thus adult run size) in the fall. This indicates that

most ocean mortality often occurs during early ocean entry (April and May). Matthews et al.

(1992) also found ocean survival for Columbia River spring/summer chinook salmon

(Oncorhynchus tshawytscha) with early ocean entry in 1990 to be very poor, especially for

hatchery fish. 

While scientists have observed the declining ocean survival of Northwest salmonids, they

have also noticed large numbers of marine fish predators becoming more abundant, arriving

earlier, and staying longer in coastal waters, particularly Pacific hake, (Merluccius productus),

chub mackerel (Scomber japonicus), and jack mackerel (Trachurus symmetricus). For example,

in 1977, mackerel was rarely captured during the National Marine Fisheries Service (NMFS)

triennial trawl surveys off Oregon; by 1995, mackerel was abundant and commonly caught at

many stations (Mark Wilkins1

). During a 6-year coastal purse-seine study off the Northwest,

Brodeur and Pearcy (1986) identified a shift in the fish community during the 1983 El Niño,

from a community dominated by forage fish and squid from 1979–1982 to one dominated by

predators (chub mackerel, jack mackerel, and dogfish shark [Squalus acanthias]) in 1983. These

piscivorous fishes may be a significant cause of juvenile salmon mortalities. For example, an

investigation in British Columbia found that chub mackerel consumed nearly all the salmon

smolts released from a nearby hatchery (Brent Hargreaves2), resulting in few returns from that

brood-year release.

 

1

 Mark Wilkins; NMFS, 7600 Sandpoint Way NE, Seattle, WA 98115; pers. commun., March 1996.

2

 Brent Hargreaves, Canadian Fish and Oceans, Pacific Biological Station, Nanaimo, B.C. Canada V9R 5K6, pers.

commun., March 1996.
2

Although feeding characteristics of common Pacific Northwest predatory fishes vary

geographically, temporally, and with respect to life stage, the mitigating factors driving their

feeding strategies are not known. For example, chub mackerel captured off Oregon in the early

1980s fed primarily on euphausiids (Brodeur et. al. 1987, Brodeur and Pearcy 1992). In

California, however, it feeds primarily on larval and juvenile fishes and secondarily on squid and

euphausiids (MBC Applied Environmental Sciences 1987). Food habit information from

California indicates that chub mackerel are often a voracious feeder on fishes, particularly

northern anchovy (Engraulis mordax). A preliminary examination of chub mackerel feeding

habits off Vancouver Island, British Columbia in 1984 revealed that salmonids were eaten,

although Pacific herring (Clupea pallasi) was the primary prey (Ashton et al. 1985). Juvenile

jack mackerel has been found to feed heavily on market squid (Loligo opalescens) and northern

anchovy, whereas the adult eats fishes (lantern fishes and northern anchovy), squid, pelagic

crustaceans (euphausiids and copepods), and pteropods (MBC 1987).

Another example of a predatory fish with a varying diet is Pacific hake. Hake make

broad migrations from their winter spawning grounds off southern California to their summer

feeding ground off Oregon, Washington, and British Columbia. In the fall they migrate south to

California. While hake are are found at the shelf break during spring, by summer many hake can

be found on the shelf at depths <100 m. Pacific hake also make diurnal migrations, moving from

near the bottom during the day to near the surface at night (Bailey et al. 1982). Hake feeds

primarily on euphausiids, shrimp, and fishes, with fishes (primarily northern anchovy off

Oregon) being more important to larger individuals (Livingston and Alton 1982). In 1980, 70%

of the diet of larger hake (>55 cm total length) off Oregon-Washington was composed of fish

(Bailey et al. 1982). The extent of predation by these fishes on juvenile salmonids is unknown,

but given the temporal, geographic, and size-related variation in their feeding habits, their

potential impact could be extensive.

Because of their large population size, Pacific hake could impact juvenile salmon

populations even if hake diets includes a low percentage of salmonids. The Pacific hake

population represents the largest single-species fishery (biomass) on the West Coast.

Approximately 3 billion Pacific hake were expected to migrate into Northwest waters during the

spring/summer of 1997 (Dorn 1996), the biological demand of this population will undoubtedly

have a large impact on coastal marine food webs and biological communities in Northwestern

coastal waters (Ware and McFarlane 1995). Research off British Columbia indicates that recent

increases in numbers of Pacific hake and mackerel in these waters have increased the predation

rates on and decreased the abundance of Pacific herring (Ware and McFarlane 1995). We

hypothesize that the timing of movement, food habits, and abundance of these seasonal migrant

marine fish predators into Oregon and Washington coastal waters has a significant effect on the

biological community on which juvenile salmonid ocean survival is dependent. We further

hypothesize that the distribution and abundance of the nearshore marine-predator and forage-fish

community affects the amount of predation on juvenile salmonids by marine predatory fish.

There are no detailed or recent data on the feeding habits of piscivorous fishes off the

mouth of the Columbia River during the salmonid smolt outmigration period (spring). By

assessing the dynamics of the marine-fish predators and forage-fish communities during this

period, and by monitoring the food habits of the dominant marine fish predators (by analyzing

stomach contents), we will determine whether predation is a large direct or indirect source of

marine mortality of juvenile salmonids entering the ocean from the Columbia River. We will
3

also identify how this predation is mediated by alternative prey abundance (abundance of

northern anchovy, or sardines [Sardinops sagax], from this and an ongoing NMFS study) and

physical oceanographic conditions (temperatures, salinities, etc.).

This research has five overall objectives:

1) In 1998, to determine the best method to capture large pelagic marine fish that may prey on

juvenile salmonids.

2) Identify the temporal dynamics and abundance of marine-fish predators and forage fishes in

the nearshore ocean off the Columbia River during the juvenile salmon outmigration period.

3) Identify the food habits of predatory marine fishes off the Columbia River.

4) Identify oceanographic conditions (ocean temperatures and salinities) in the nearshore ocean

off the Columbia River during the spring and early summer.

5) Relate predator and forage fish distribution and abundance to oceanographic conditions and

ocean survival of juvenile salmonids.

METHODS

Large marine-fish predators (primarily Pacific hake, chub mackerel, and jack mackerel)

and other associated fishes (Pacific herring, northern anchovy, Pacific sardine, etc.) and squid

were collected by surface trawling, primarily during nighttime but also during daylight (evening

and morning), with a commercial mid-water trawler. Nighttime samples were collected because

many fishes (particularly Pacific hake) migrate from depth to the surface at night (diel vertical

migration) (Bailey et al. 1982). In 1998, a variety of trawls were utilized in our attempt to

identify an appropriate gear type that would effectively sample the near-surface environment for

small and large fishes. We eventually selected a 264-rope trawl with 3-m foam-filled Lite doors,

designed and built by Net Systems3, as the most effective gear type. This is the same gear that

the NMFS Alaska Fisheries Science Center is using to capture juvenile salmonids and associated

fishes off southeast Alaska (Murphy et al. 1999). It is also used by the NMFS Southwest

Fisheries Science Center in California conducting a similar study. In 1999, all samplings were

conducted using the 264-rope trawl. The trawl is 100-m long with a mouth area approximately

30-m wide and 20-m deep. Mesh size ranges from 126.2 cm in the throat of the net near the jib

lines to 8.9 cm in the cod end. A 6.1-m long, 0.8-cm stretch knotless web liner was sewn into

the cod end to effectively capture anchovy and other baitfish.

The 264-rope trawl was fished by towing it 183 m (100 fathoms) behind the vessel, an

85-ft chartered commercial fishing trawler, travelling approximately 4 knots (7.4 km/hour) for 30

minutes. In 1998, other trawls were fished (Table 1) at a variety of speeds and distances behind

the vessel, but these were abandoned when it became apparent that the 264-rope trawl and Lite

doors worked most effectively: the 264-rope trawl was easy to deploy and retrieve, was

obviously fishing at the service (head floats were visible), and was effective at catching all sizes

of fish. Furthermore, because this gear is also being used in other studies along the entire West

Coast, we will be able to directly compare our catch data with these studies data.

 

3

 Mention of trade names does not mean endorsement by NOAA, NMFS, or Department of Commerce.
4

Table 1. Type and size of fishing gear used to collect fish off the Columbia River in 1998 and 1999.

Trawl net Trawl door

Net mouth

width (m)

Net mouth

height (m)

commercial hake trawl 5-m thyborφn 56 28

rock-hopper 5-m thyborφn 20 16

rock-hopper 3-m suber krube 20 16

#4 rope trawl 5-m thyborφn 30 20

#4 rope trawl 3-m suber krube 30 20

264 rope trawl 3-m foam filled 30 20
5

In 1998, we followed a general tract line that started off Willapa Bay, traveled west for

about 30 nautical miles, turned south across the Astoria Canyon, and finally turned east toward

shore, just below the mouth of the Columbia River (Fig. 1). Along this general tract line we

attempted to capture as many predatory fishes as possible. To do this with untested gear, we

focused our sampling where significant targets (i.e., fish schools) were observed to be near the

surface on the depth sounder. The purpose of setting on targets, instead of specific locations,

was to verify that the gear type we were using could actually fish at the surface and capture

fishes effectively. Identifying the most appropriate sampling gear was one of our primary

objectives in 1998.

In 1999, we sampled at pre-determined stations along two transect lines north and south

of the entrance to the Columbia River (Fig. 1). Six stations were sampled along each transect,

with the first station being as close to shore as possible but at least 30-m deep, and the farthest

stations approximately 30 km from shore. Sampling at predetermined stations, instead of on

identified schools, enables us to calculate unbiased estimates of predator and prey abundance

within the study area during the survey period.

Sampling was conducted approximately every 2 weeks from April 16 to August 10 in

1998, and approximately every 10 days from April 13 to July 27 in 1999, for a total of 20

sampling days (10 sampling cruises/year). Sampling effort was focused on spring because

salmonid ocean survival (particularly for coho salmon) is hypothesized to be determined at that

time (Pearcy 1992). Furthermore, this is the period when a large number of juvenile salmonids

are entering the ocean and thus when predator/prey interactions are most likely to be observed.

From each trawl, all potential salmonid predators and forage fish species were identified,

enumerated, and measured, except when large catches occurred. With large catches, a random

sample of 30 individual fish from each species was measured and the rest counted. During each

cruise, a subsample (20 specimens) of each predatory species was iced, transported to the

laboratory, and measured and weighed to determine accurate length/weight relationships. From

each trawl, up to 30 stomachs of each potential marine fish predator species were removed and

preserved in a 10% formalin solution. A stratified sampling design was used to screen a large

number of predator stomach contents for juvenile salmonids. In detail, we took stomachs from

the first 30 fish of a species from a trawl and then quickly checked all other stomachs for the

presence of salmonids. When large catches of predators occurred, a subsample (30) stomachs

were preserved for detailed laboratory analysis and the rest were visually inspected on deck. The

visual inspection was conducted by cutting open predators, inspecting the stomach contents,

recording general content (euphausiids, etc.), and saving the stomach (preserving in formalin) if

there were indications of juvenile salmonid (or unidentified fish) remains. In a couple of

circumstances where extremely large catches of predators did not allow inspection of all

stomachs from all fish collected, we examined as many stomachs as time allowed. Detailed

stomach analysis is being conducted and will be presented in a later report. Physical

oceanographic data (temperature and salinity) profiles were collected at all trawl stations by

lowering a SeaBird SB-19 conductivity, temperature, and depth (CTD) probe to 50-m depth.
6

Figure 1. The location of surface trawls conducted in 1998 (A, 72 trawls), and 1999 (B, 113 trawls) to collect 

juvenile salmon and associated species. In 1999, stations were located along two transects.
7

RESULTS

We conducted 72 and 113 trawls in 1998 and 1999, respectively (Appendix 1).

However, during 1998 we spent many cruises trying out different gear configurations, and many

of these initial trawl efforts were not effective surface trawls (i.e., we could not get the net to fish

at the surface). Starting June 27, 1998, we began using the 264-rope trawl and continued using

this gear through 1999.

Collections of fish and squid totaled 41,304 in 1998 and 27,762 in 1999 (Table 2). We

captured many more Pacific hake in 1998 (13,478) than in 1999 (2,274), probably because we

were setting gear on sonar observable fish schools in 1998, some trawls were at depth, and

initially we sampled with a large hake net. The dominant fish species captured was Pacific

herring (13,518) in 1998 and Pacific sardine (10,455) in 1999.

Overall, forage nekton (Pacific herring, Pacific sardine, market squid, northern anchovy,

and smelt) comprised most of the catches (Tables 2 and 3). Highest catches occurred during the

July 12–14, 1998 cruise, when over 18,000 fish (Table 3) (mostly Pacific herring and Pacific

sardine) were captured. Lowest catches occurred during the second cruise of 1999, from April

22–24, when only 114 fish were captured. The second lowest catch took place during May 27–

29, 1999 when only 123 fish were captured.

During the 2 years of this study, 4,491 stomachs were either examined qualitatively or

retained for later quantitative examination (Table 4). Most stomachs were from Pacific hake,

with 2,809 collected in 1998 and 458 in 1999. In 1998, most hake stomachs were empty, and

almost half were empty in 1999 (Table 4). In 1998, one juvenile salmon was identified from one

hake stomach, but its fresh condition indicated net feeding (Table 5). Both mackerel species

were found to be feeding primarily on a variety of pelagic invertebrates (e.g., copepods or

euphausiids) (Table 5). We are undertaking quantitative examination of the collected stomachs.

The Pacific hake captured in 1998 were slightly larger on average than those captured in

1999, with mean standard lengths of 395 mm SL and 387 mm SL, respectively (Fig. 2). Chub

mackerel were slightly smaller in 1998 than in 1999, 297 mm FL (fork length) and 317 mm FL,

respectively (Fig. 3). While jack mackerel overall average size was slightly larger in 1999

(396.0 mm FL vs. 385.0 mm FL in 1998) its length distribution appeared to be bi-modal (Fig. 4).

This was particularly evident in 1999, where two size-groups were obvious, one that ranged from

310 mm FL to 430 mm FL, and a larger group that ranged from 440 mm FL to 590 mm FL.

Northern anchovy showed one size-mode, with a mean of 137.3-mm FL. Pacific sardine

showed a broad length distribution, from 110 mm to 300 mm FL (Fig. 5). However, most

sardine ranged from 180 mm to 280 mm FL, with a small mode centered around 200 mm FL and

another around 240 mm FL. Pacific herring also had a very broad size range, from 60-mm FL to

280-mm FL (Fig. 6). However, most Pacific herring ranged from 120 mm to 250 mm FL.

Overall, Pacific herring averaged 188 mm FL (Fig. 6), which is about half way between the

mean lengths of northern anchovy (137 mm FL) and Pacific sardine (229.5 mm FL).
8

Table 2. Total number of nekton captured during predation cruises in 1998 and 1999 off the mouth of the

Columbia River.

1998 1999

Common Name Scientific Name Number

captured

Number

captured

California market squid Loligo opalescens 207 1,482

Lamprey Petromyzontidae 7

River lamprey Lampetra ayresii 1

Pacific lamprey Lampetra tridentata 1 4

Shark Chondrichthyes 3

Thresher shark Alopias vulpinus 2

Soupfin shark Galeorhinus zyopterus 4 6

Blue shark Prionace glauca 4 5

Spiny dogfish Squalus acanthias 90 129

Skates Rajidae 1 1

Big skate Raja binoculata 13

Spotted ratfish Hydrolagus colliei 1

Unidentified bony fish Osteichthyes 6

American shad Alosa sapidissima 49 207

Pacific herring Clupea pallasi 13,518 6,031

Pacific sardine Sardinops sagax 8,875 10,455

Northern anchovy Engraulis mordax 1,593 1,557

Chum salmon juvenile Oncorhynchus keta 1

Coho salmon adult Oncorhynchus kisutch 12 1

Coho salmon juvenile Oncorhynchus kisutch 6 36

Chinook salmon <=1 yr. Oncorhynchus tshawytscha 25 395

Chinook salmon >1 yr. Oncorhynchus tshawytscha 68 11

Chinook salmon adult Oncorhynchus tshawytscha 8 21

Steelhead Oncorhynchus mykiss 1

Smelts Osmeridae 59 100

Surf smelt Hypomesus pretiosus 12

Night smelt Spirinchus starksi 4

Longfin smelt Spirinchus thaleichthys 62

Eulachon Thaleichthys pacificus 35

Whitebait smelt Allosmerus elongatus 1,339 840

Longfin dragonfish Tactostoma macropus 6

Lantern fish Myctophidae 497

Plainfin midshipman Porichthys notatus 29
9

Table 2. Total number of nekton captured during predation cruises in 1998 and 1999 off the mouth of the

Columbia River. Continued.

1998 1999

Common Name Scientific Name Number

captured

Number

captured

Pacific tomcod Microgadus proximus 1 996

Pacific hake Merluccius productus 13,477 2,259

Rockfishes Sebastes spp. 15

Yellowtail rockfish Sebastes flavidus 2 1

Black rockfish Sebastes melanops 19 42

Sablefish Anoplopoma fimbria 3

Pacific staghorn sculpin Leptocottus armatus 5

Snailfish Cyclopteridae 1 1

Jack mackerel Trachurus symmetricus 289 1,947

Pacific pomfret Brama japonica 21

Pacific sandfish Trichodon trichodon 2

Wolf-eel Anarrhichthys ocellatus 11

Ragfish Icosteus aenigmaticus 1 1

Pacific sand lance Ammodytes hexapterus 4

Chub mackerel Scomber japonicus 712 622

Pacific sanddab Citharichthys sordidus 370 239

Slender sole Eopsetta exilis 3

Rex sole Errex zachirus 1 2

Dover sole Microstomus pacificus 5

Starry flounder Platichthys stellatus 130

Butter sole Pleuronectes isolepis 9

English sole Pleuronectes vetulus 22 8

Sand sole Psettichthys melanostictus 1

Total 41,296 27,746
10

Table 3. Number of baitfish (Pacific sardine [Sardinops sagax], northern anchovy [Engraulis mordax],

Pacific herring [Clupea pallasi], and smelt), predators (Pacific hake [Merluccius productus],

chub mackerel [Scomber japonicus], jack mackerel [Trachurus symmetricus], and sharks), and

other fishes captured during pelagic trawling surveys off the mouth of the Columbia River in

1998 and 1999. Cruises do not represent equal effort due to varying gear type and number and

length of tows (see Appendix 1).

Cruise

number Start date

Number

of hauls Baitfish Predators Other

Total

Caught

1 16-Apr-98 10 34 219 62 315

2 30-Apr-98 4 31 328 10 369

3 15-May-98 6 175 134 254 563

4 31-May-98 8 1,247 3,428 39 4,714

5 12-Jun-98 6 628 540 77 1,245

6 27-Jun-98 9 1446 2,459 28 3,933

7 12-Jul-98 9 15,390 2,637 85 18,112

8 27-Jul-98 11 5,020 2,376 695 8,091

9 10-Aug-98 9 1,413 2,447 94 3,954

1998 Total 72 25,384 14,568 1,344 41,296

1 13-Apr-99 10 372 10 91 473

2 22-Apr-99 11 36 23 55 114

3 04-May-99 12 6,047 106 670 6,823

4 13-May-99 11 248 989 802 2,039

5 27-May-99 11 39 59 25 123

6 12-Jun-99 12 241 834 89 1,164

7 25-Jun-99 12 676 833 94 1,603

8 06-Jul-99 12 778 358 432 1,568

9 13-Jul-99 10 722 287 1,294 2,303

10 27-Jul-99 12 9,937 1,458 141 11,536

1999 Total 113 19,096 4,957 3,693 27,746
11

Table 4. Number of predatory fish stomachs taken quantitatively and examined qualitatively to estimate

predation of juvenile salmonids off the mouth of the Columbia River, 1998 and 1999.

Predator name Year

Taken for

quantitative

examination

Examined

onboard

qualitatively Total

Jack mackerel 1998 27 110 137

(Trachurus symmetricus) 1999 163 383 546

Pacific hake 1998 830 1,979 2,809

(Merluccius productus) 1999 245 217 462

Chub mackerel 1998 205 103 308

(Scomber japonicus) 1999 75 81 156

Spiny dogfish 1998 26 11 37

(Squalus acanthias) 1999 10 25 35

Other shark species 1998 1 1

Total 1,581 2,910 4,491
12

Table 5. Results of onboard qualitative examinations of 2,910 predator stomachs collected off the mouth of the Columbia 

Some predators had more than one prey type in their stomachs.

Qualitative exam onboard – Number of stomachs containing

Predator name Year

Empty

Invertebrates/

euphausiids

Unidentified

fish

Northern

anchovy

Pacific herring

Pacific sardine

Flatfish

Smelt

Lantern fish

Salmon

Jack mackerel(Trachurus symmetricus)

1998 99 111999 215 157 1 1 

Pacific hake(Merluccius productus)

1998 1,531 434 3 7 1 1 11999 96 121 2 1 2

Chub mackerel(Scomber japonicus)

1998 58 451999 25 54 

Spiny dogfish(Squalus acanthias)

1998 9 21999 12 2 10 1 

Other sharkspecies

1998 0 1 1

Total 2,045 824 17 9 1 1 2 3 1 1 
13

Figure 2. Length frequency distribution of Pacific hake (Merluccius productus) captured off the mouth

of the Columbia River by surface trawl in 1998 (A) and 1999 (B).

0

100

200

300

400

500

50

110170230290350410470530590650

>710

Standard length (mm)

Frequency (number)

0

50

100

150

200

50

110170230290350410470530590650

> 710

Standard length (mm)

Frequency (number)

B Mean = 387 mm

SE = 2.2 mm

N = 775

Mean = 395 mm

SE = 1.6 mm

N = 1,711

A
14

Figure 3. Length frequency distribution of chub mackerel (Scomber japonicus) captured off the mouth

 of the Columbia River by surface trawl, 1998 and 1999.

0

50

100

150

200

150170190210230250270290310330350370390410430450470490510530

>550

Fork length (mm)

Frequency (number)

0

50

100

150

200

150190230270310350390430470510

>550

Fork length (mm)

Frequency (number)

Mean = 317.5 mm

SE = 1.2 mm

N = 335

Mean = 297.3 mm

SE = 1.3 mm

N = 477

1998

1999

1999
15

Figure 4. Length frequency distribution of jack mackerel (Trachurus symmetricus) captured off

the mouth of the Columbia River by surface trawl, 1998 and 1999.

0

20

40

60

80

100

120

140

160

250270290310330350370390410430450470490510530550570590610630

>650

Fork length (mm)

Frequency (number)

0

5

10

15

20

25

30

35

250270290310330350370390410430450470490510530550570590610630

>650

Fork length (mm)

Frequency (number)

Mean = 396.0 mm

SE = 2.7 mm

N = 599

Mean = 385.0 mm

SE = 4.7 mm

N = 203

1998

1999
16

Figure 5. Length frequency of northern anchovy (Engraulis mordax) and Pacific sardine

(Sardinops sagax) collected off the Columbia River by surface trawl, during

April through July 1998 and 1999. Both years combined.

0

20

40

60

80

100

120

6080

100120140160180200220240260280300320340

>360

Fork length (mm)

Frequency (number)

Mean = 137.3 mm

SE = 0.7 mm

N = 360

Northern anchovy

0

50

100

150

200

250

300

6080

100120140160180200220240260280300320340

>360

Fork length (mm)

Frequency (number)

Pacific sardine Mean = 229.5 mm

SE = 0.7 mm

N = 1,211
17

Figure 6. Length frequency of Pacific herring (Clupea pallasi) collected off the Columbia

 River by surface trawl, during 1998 and 1999.

1998

0

20

40

60

80

100

120

6080

100120140160180200220240260280300320340

>360

Fork length (mm)

Frequency (number)

Mean = 190.0 mm

SE = 1.1 mm

N = 577

1999

0

10

20

30

40

50

60

70

80

90

6080

100120140160180200220240260280300320340

>360

Fork length (mm)

Frequency (number)

Mean = 187.3 mm

SE = 1.6

N = 643
18

Overall, sea-surface salinities were relatively similar between years (Fig. 7). However,

sea-surface temperatures were on average 1.4°C cooler (SE = 0.5, P < 0.05) in 1999. The dip in

sea-surface salinities during Cruises 3, 4, and 5, was probably due to increased runoff from the

Columbia River plume in spring. Lowest overall sea-surface temperature observed was 9.0°C at

Willapa Bay Stations 5 and 9 during the first survey of 1999 (Table 6). Highest overall seasurface temperature observed was 17.8°C off the mouth of the Columbia River, July 29, 1998.

Lowest surface salinity, 15.5 ppt, was observed on May 15, 1999 at Station 10 on the Columbia

River transect.

The 1999 CTD data provided a better overall view of salinity and temperature profiles

during each cruise because the data were collected on track lines perpendicular from shore.

Appendix 2 shows profiles of temperature and salinity by depth and distance offshore during

1999. These temperature profiles reveal that by April 22, 1999, cold (9°C), nutrient-rich water

was within 20 m of the surface, probably indicating the beginning of upwelling conditions. By

May 27, 1999, 8°C water was within 20 m of the surface, and by June 12, 1999 upwelling was

strong, with surface temperatures showing a sharp horizontal gradient.

The 1999 salinity information showed the location of the Columbia River plume. During

the first 1999 cruise, from April 13–15, the plume appeared to be moving offshore and south

(Appendix 2) with a little fresh water moving north. Some fresh water appeared to move north

during early May, but by late May (Cruise 5), the plume appeared to turn sharply south. Under

this condition, no low salinities were found on the Willapa Bay transect, and very low salinities

(plume) were found at nearshore stations along the Columbia River transect (7, 10, and 15

nautical miles from the coast) (Appendix 2). Interestingly, low salinities (<32 ppt) occurred

primarily above 10 m, except for the first cruise of 1999 (April 13–15).
19

Figure 7. Average sea-surface salinities and temperatures at surface trawl stations during sampling cruises in 1998 and 1

Sea-surface salinities and temperatures

05

101520253035

1 2 3 4 5 6 7 8 9 

Cruise number

Sea-surface salinities (ppt) and sea-surface 

temperatures (

o

C)

1998 salinit1999 salinit1998 tempe1999 tempe
20

Table 6. Near-surface (1-m depth) salinity and temper+ature along two transect lines off the Columbia River mouth, April

indicate missing data.

Willapa Bay stations (approximate distance [nautical miles] from shore)

5 9 14 19 23 

Temp. Salin. Temp. Salin. Temp. Salin. Temp. Salin. Temp. Salin

Cruise Date (°C) (‰) (°C) (‰) (°C) (‰) (°C) (‰) (°C) (‰) 

1 13-15 April 9.0 30.90 9.0 30.23 9.3 29.06 9.4 29.79 9.3 30.69 2 22-24 April -- -- 10.2 25.93 10.2 27.30 9.8 30.19 9.7 30.09 3 4-6 May 11.1 22.34 10.9 24.56 9.9 30.63 9.8 31.34 9.8 31.54 4 13-15 May -- -- 11.6 19.05 11.5 22.10 11.3 24.77 9.9 28.99 5 27-29 May -- -- 10.1 29.62 11.4 27.68 12.0 28.36 12.2 27.75 6 12-14 June 13.8 25.81 13.3 30.25 12.9 31.46 12.1 31.51 12.7 31.52 7 25-27 June 15.3 21.51 14.9 25.40 14.4 27.97 14.3 27.18 13.8 29.62 8 6-8 July 14.6 28.05 14.3 29.40 14.2 29.50 14.2 30.78 13.7 31.47 9 13-15 July 9.5 32.93 12.3 31.63 12.0 31.71 12.6 31.35 -- -

10 27-29 July 9.1 33.00 11.9 32.43 12.5 32.33 13.2 32.12 13.4 32.13 
21

Table 6. Near-surface (1-m depth) salinity and temperature along two transect lines off the Columbia River mouth, April–

indicate missing data. Continued.

Columbia River stations (approximate distance [nautical miles] from shore)

4 7 10 15 20 

Temp. Salin. Temp. Salin. Temp. Salin. Temp. Salin. Temp. Salin. 

Cruise Date (°C) (‰) (°C) (‰) (°C) (‰) (°C) (‰) (°C) (‰) 

1 13-15 April -- -- 9.9 26.87 -- -- -- -- 9.6 22.31 2 22-24 April 9.5 29.06 9.9 28.30 10.4 23.35 11.1 24.79 10.8 16.66 3 4-6 May 11.6 20.33 11.7 21.09 11.6 18.29 11.3 20.53 -- -- 4 13-15 May 10.9 26.97 -- -- 11.0 15.50 -- -- 11.4 22.63 5 27-29 May 9.4 30.08 11.1 23.32 11.0 22.36 11.7 20.65 11.1 30.85 6 12-14 June 14.7 24.79 15.0 23.69 14.2 19.72 15.3 23.72 14.9 20.61 7 25-27 June 13.6 27.79 13.6 23.21 -- -- 14.0 17.58 14.6 24.94 8 6-8 July 13.7 26.83 14.0 22.62 12.4 25.93 14.0 20.48 13.6 24.38 9 13-15 July 11.0 28.01 10.5 27.43 11.8 23.57 11.3 27.32 13.0 31.41 

10 27-29 July 10.5 31.92 14.4 19.40 12.5 26.46 13.6 22.77 13.3 31.89 
22

DISCUSSION

The 264-rope trawl with Lite doors was a very effective gear for sampling pelagic fishes.

This gear enabled us to hire a local commercial fishing vessel to perform our sampling. We were

also able to effectively fish this gear in fairly rough weather, and only once were we forced to

break off sampling because of rough seas.

While laboratory analysis of the predator stomachs is not complete, initial analysis of the

stomach contents found only one occurrence of salmonid feeding (by Pacific hake), and we

believe this was net feeding. We found most hake feeding on euphausiids. However, lengthfrequency data indicate that many Pacific hake were large enough to eat fish. Livingston and

Alton (1982) found that hake longer than 400 mm SL had fish as a significant portion of their

diet, with the importance of fish in the diet of hake increasing with length. We captured very

few large fish (>500 mm SL), which are known to often have fish as a majority of their diet

(Bailey et al. 1982). We were initially unsure whether the lack of large Pacific hake in our

catches was a result of their avoidance of our gear or their absence in the area. However, since

we used multiple gear types in 1998, including a commercial hake net, and still captured few

large hake, we believe that very large hake did not occur in the study area during our survey

periods.

Purse-seine studies in the 1980s (Brodeur and Pearcy 1986) caught large numbers of

northern anchovy and market squid (Loligo opalescens) off Oregon. We captured relatively few

of these species; our catches were dominated by Pacific sardine and Pacific herring. Our survey

data lend supporting evidence that the northern subpopulation of northern anchovy has abruptly

declined (Emmett et al. 1997) and has been replaced by sardine. The cycle of replacement of

anchovy with sardine is well documented and has been occurring for centuries (Baumgartner

et al. 1992). Nevertheless, how the replacement of one baitfish species for another affects

salmonid marine survival is unclear. What is obvious is that while sardine have become

abundant off Oregon and Washington, marine survival of salmonids has declined.

The length-frequency distributions of anchovy and sardines show large differences in

size. Anchovy has a relatively short life (most do not live beyond 4 years) and does not grow

very large (maximum size is 248 mm total length [TL], but it rarely exceeds 178 mm TL)

(Baxter 1967, Hart 1973). Pacific sardine has a relatively long life (8–10 years) and grows larger

than anchovy. While sardine do spawn off the Oregon/Washington coast, we captured few

subyearling or small sardine that would be of similar size to anchovy.

This size difference between sardine and anchovy could have significant consequences

for juvenile salmonid survival. Most juvenile chinook and coho salmon migrating to sea during

April–June from the Columbia River, range from 100 to 170 mm FL (McCabe et al. 1983,

Bottom et al. 1984, Dawley et al. 1986). This size range corresponds closely with the size range

of northern anchovy. Since piscivorous predators are often size selective (not necessarily species

selective) (see Sogard 1997 for review), the reduction of anchovy abundance may have increased

predation rates on salmonids by piscivorous birds, mammals, and fishes that preferentially prey

on fishes within this size range.
23

Pacific herring, which was abundant, showed a length-frequency distribution that

encompassed the size range of anchovy (Fig. 6). If size-dependent predation was occurring,

abundant Pacific herring resources should have reduced this predation pressure on salmonids.

However, most Pacific herring captured were older, larger individuals, with only 26% of the

Pacific herring captured less than 160 mm FL.

Laboratory analysis of predator fish stomachs is still underway. Nevertheless, we have

found baitfish to be a very important component to Pacific hake’s diet. The size and species

consumed should help clarify if size-dependent predation is occurring.

The large numbers of mackerel, sardine, and hake now residing in the Oregon/Washington

coastal zone may also be competing with juvenile salmonids for prey resources. Gross

examination (while at sea) of hundreds of mackerel, hake, and sardine stomachs indicated nearly

all were feeding on euphausiids. Euphausiids are also important prey for juvenile salmonids

(Brodeur and Pearcy 1990). We hypothesize that abundant euphausiid resources may enable

more juvenile salmonids to outgrow the size window where predation is intense. Abundant

euphausiid resources may also inhibit certain predators from switching to prey on fishes.

Coho salmon ocean survival was 1% in 1998 and estimated to be over 2% in 1999

(Pacific Fishery Management Council [PFMC] 2000). This is much higher than the 0.5%

survival during most of the 1990s. It is unfortunate that we did not discover the 264-rope trawl

until late June 1998, because this would have allowed direct comparison of our catches between

years. Nevertheless, as salmonid ocean survival fluctuates, future surveys will be able to track

changes in the nearshore fish community structure and in fish feeding habits that affect salmonid

survival. These data can then be statistically related to salmonid marine survival. It is probable

that both predation and competition play a role in salmonid ocean survival. Predation on

salmonids is mediated by predator abundance, baitfish community structure (e.g., anchovy

abundance), and salmonid growth rates. Salmonid growth rates are in turn influenced by food

resources, which are affected by competition with other fishes, ocean productivity, and other

factors.
24
25

CITATIONS

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(Scomber japonicus) caught off the west coast of Vancouver Island, September 1984. Can.

Tech. Rep. Fish. Aquat. Sci. 1394, 11 p.

Bailey, K. M., R. C. Francis, and P. R. Stevens. 1982. The life history and fishery of Pacific whiting,

Merluccius productus. Calif. Coop. Oceanic Fish. Invest. Rep. 23:81-98.

Baumgartner, T. R., A. Soutar, and V. Ferreira-Bartrina. 1992. Reconstruction of the history of Pacific

sardine and northern anchovy populations over the past two millennia from sediments of the

Santa Barbara Basin, California. Calif. Coop. Oceanic Fish. Invest. Rep. 33:24-40.

Baxter, J. L. 1967. Summary of biological information on the northern anchovy, Engraulis mordax

Girard. Calif. Coop. Oceanic Fish. Invest. Rep. 11:110-116.

Bottom, D. L., K. K. Jones, and M. J. Herring. 1984. Fishes of the Columbia River estuary. Report to

Columbia River Estuary Data Development Program, Astoria, OR. 133 p. + app. (Available

from Columbia River Estuary Study Task Force, 748 Commercial Street, Astoria, OR 97103.)

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nekton off Oregon and Washington, 1979-84. U.S. Dep. Commer., NOAA Tech. Rep.

NMFS-NWFSC-46, 85 p.

Brodeur, R. D., and W. G. Pearcy. 1990. Trophic relations of juvenile Pacific salmon off the Oregon and

Washington coast. Fish. Bull. U.S. 88:617-636.

Brodeur, R. D., and W. G. Pearcy. 1992. Effects of environmental variability on trophic interactions and

food web structure in a pelagic upwelling ecosystem. Mar. Ecol. Prog. Ser. 84:101-119.

Brodeur, R. D., and D. M. Ware. 1992. Interannual and interdecadal changes in zooplankton biomass in

the subarctic Pacific Ocean. Fish. Oceanogr. 1:32-38.

Brodeur, R. D., B. W. Frost, S. R. Hare, R. C. Francis, and W. J. Ingraham, Jr. 1996. Interannual

variations in zooplankton biomass in the Gulf of Alaska and covariation with California Current

zooplankton. Calif. Coop. Oceanic Fish. Invest. Rep. 37:80-99.

Brodeur, R. D., H. V. Lorz, and W. G. Pearcy. 1987. Food habits and dietary variability of pelagic

nekton off Oregon and Washington, 1979-1984. U.S. Dep. Commer., NOAA Tech. Rep.

NMFS-NWFSC-57, 32 p.

Coronado, C., and R. Hilborn. 1998. Spatial and temporal factors affecting survival in coho salmon

(Oncorhynchus kisutch) in the Pacific Northwest. Can. J. Fish. Aquat. Sci. 55:2067-2077.

Dawley, E. M., R. D. Ledgerwood, T. H. Blahm, C. W. Sims, J. T. Durkin, R. A. Kirn, A. E. Rankis,

G. E. Monan, and F. J. Ossiander. 1986. Migrational characteristics, biological observations,

and relative survival of juvenile salmonids entering the Columbia River estuary, 1966–1993.

Report to Bonneville Power Administration, Contract DE-A179-84BP39652, 256 p. (Available

from Northwest Fisheries Science Center, 2725 Montlake Blvd. E., Seattle, WA 98112.)
26

Dorn, M. W. 1996. Status of the coastal Pacific whiting resource in 1996. In Status of the Pacific Coast

Groundfish Fishery through 1996 and Recommended Acceptable Biological Catches for 1997,

Vol. I, Appendix A, p. 1–77. (Available from Pacific Fishery Management Council, 2130 SW

Fifth Avenue, Portland, OR 97201.)

Emmett, R. L., P. J. Bentley, and M. H. Schiewe. 1997. Abundance and distribution of northern anchovy

eggs and larvae (Engraulis mordax) off the Oregon coast, mid-1970s and 1994 and 1995. In

Forage Fishes in Marine Ecosystems, Proceedings International Symposium on the Role of

Forage Fishes in Marine Ecosystems, p. 505–508. Univ. Alaska Sea Grant College Program

Report 97-01.

Fisher, J. P., and W. G. Pearcy. 1988. Growth of juvenile coho salmon (Oncorhynchus kisutch) in the

ocean off Oregon and Washington, USA, in years of differing coastal upwelling. Can. J. Fish.

Aquat. Sci. 45:1036-1044.

Francis, R. C., and S. R. Hare. 1994. Decadal-scale regime shifts in the large marine ecosystems of the

northeast Pacific: a case for historical science. Fish. Oceanogr. 3:279-291.

Francis, R. C., S. R. Hare, A. B. Hollowed, and W. S. Wooster. 1998. Effects of interdecadal climate

variablility on the oceanic ecosystem of the northeast Pacific. Fish. Oceanog. 7(1):1-21.

Hare, S. R., N. J. Mantua, and R. C. Francis. 1999. Inverse production regimes: Alaska and West Coast

Pacific salmon. Fisheries 24(1):6-14.

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Hilborn, R., and C. Coronado. 1997. Changes in ocean survival of coho and chinook salmon in the

Pacific Northwest. In R. L. Emmett and M. H. Schiewe (eds.), Estuarine and ocean survival of

northeastern Pacific salmon: Proceedings of the workshop, p. 9-18. U.S. Dep. Commer.,

NOAA Tech. Memo. NMFS-NWFSC-29.

Livingston, P. A., and M. S. Alton. 1982. Stomach contents of Pacific whiting, Merluccius productus,

off Washington and Oregon, April–July. U.S. Dep. Commer., NOAA Tech Memo.

NMFS-F/NWC-32, 36 p.

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climate oscillation with impacts on salmon production. Bull. Am. Meteor. Soc. 78:1069-1079.

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K. W. McIntyre, and K. L. Thomas. 1992. Evaluation of transportation of juvenile salmonids

and related research on the Columbia and Snake Rivers, 1990. Report to U.S. Army Corps of

Engineers, Walla Walla District, Contract DACW 68-84-H0034, 51 p. + app. (Available from

Northwest Fisheries Science Center, 2725 Montlake Blvd. E., Seattle, WA 98112.)

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California. Report to Minerals Management Service, U.S. Dep. Int., Contract MMS

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Camarillo, Camarillo, CA 93010.)
27

McCabe, Jr., G. T., W. D. Muir, R. L. Emmett, and J. T. Durkin. 1983. Interrelationships between

juvenile salmonids and nonsalmonid fish in the Columbia River estuary. Fish. Bull. U.S.

81(4):815-826.

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Fifth Avenue, Portland, OR 97201.)

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McNeal (ed.), Salmon Production, Management, and Allocation, p. 67–73. Oregon State Univ.

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28
29

APPENDIX I:

SUMMARY OF TRAWL DATA
30
31

Appendix 1. Summary data for each trawl including location, gear used, time and date, total

number and number of each species caught during a study of predatory fish off the

Columbia River in 1998 and 1999.

Haul #: 1 Latitude: 46.422 N Longitude: 124.337 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/16/1998 2:30:00 PM Tow time (minutes): 5 Tow distance (km): 0.50

Speed (km/h): 6.0 Tow direction (degrees): 244 Total caught: 1

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Haul #: 2 Latitude: 46.284 N Longitude: 124.333 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/16/1998 10:29:00 PM Tow time (minutes): 34 Tow distance (km): 4.21

Speed (km/h): 7.4 Tow direction (degrees): 185 Total caught: 49

Common name Scientific name Number caught

Pacific hake Merluccius productus 49

Haul #: 3 Latitude: 46.198 N Longitude: 124.362 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/17/1998 1:18:00 AM Tow time (minutes): 39 Tow distance (km): 9.22

Speed (km/h): 14.2 Tow direction (degrees): 210 Total caught: 6

Common name Scientific name Number caught

California market squid Loligo opalescens 2

Pacific hake Merluccius productus 2

Pacific sanddab Citharichthys sordidus 1

Pacific sardine Sardinops sagax 1

Haul #: 4 Latitude: 46.137 N Longitude: 124.443 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/17/1998 2:20:00 AM Tow time (minutes): 87 Tow distance (km): 8.87

Speed (km/h): 6.1 Tow direction (degrees): 27 Total caught: 12

Common name Scientific name Number caught

California market squid Loligo opalescens 2

Pacific sanddab Citharichthys sordidus 4

Pacific sardine Sardinops sagax 6
32

Appendix 1. Continued.

Haul #: 5 Latitude: 46.246 N Longitude: 124.358 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/17/1998 4:49:00 AM Tow time (minutes): 124 Tow distance (km): 13.68

Speed (km/h): 6.6 Tow direction (degrees): 3 Total caught: 8

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Northern anchovy Engraulis mordax 4

Whitebait smelt Allosmerus elongatus 3

Haul #: 6 Latitude: 46.400 N Longitude: 124.402 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/17/1998 9:45:00 AM Tow time (minutes): 52 Tow distance (km): 5.39

Speed (km/h): 6.2 Tow direction (degrees): 177 Total caught: 140

Common name Scientific name Number caught

American shad Alosa sapidissima 1

Pacific sardine Sardinops sagax 1

Pacific herring Clupea pallasi 5

Pacific hake Merluccius productus 116

Chinook salmon - ocean fish Oncorhynchus tshawytscha 9

Chub mackerel Scomber japonicus 8

Haul #: 7 Latitude: 45.840 N Longitude: 124.043 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/17/1998 9:55:00 PM Tow time (minutes): 40 Tow distance (km): 6.17

Speed (km/h): 9.3 Tow direction (degrees): 7 Total caught: 14

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 5

Pacific sardine Sardinops sagax 4

Whitebait smelt Allosmerus elongatus 5

Haul #: 8 Latitude: 45.913 N Longitude: 124.102 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/17/1998 11:30:00 PM Tow time (minutes): 57 Tow distance (km): 4.92

Speed (km/h): 5.2 Tow direction (degrees): 345 Total caught: 0

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 0

Pacific herring Clupea pallasi 0

Pacific sardine Sardinops sagax 0

Whitebait smelt Allosmerus elongatus 0
33

Appendix 1. Continued.

Haul #: 9 Latitude: 46.252 N Longitude: 124.368 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/18/1998 4:29:00 AM Tow time (minutes): 76 Tow distance (km): 9.25

Speed (km/h): 7.3 Tow direction (degrees): 39 Total caught: 7

Common name Scientific name Number caught

Yellowtail rockfish Sebastes flavidus 1

Northern anchovy Engraulis mordax 3

Pacific hake Merluccius productus 2

Pacific sanddab Citharichthys sordidus 1

Haul #: 10 Latitude: 46.353 N Longitude: 124.263 W

Net type: Commercial hake trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 04/18/1998 6:47:00 AM Tow time (minutes): 35 Tow distance (km): 5.46

Speed (km/h): 9.4 Tow direction (degrees): 162 Total caught: 81

Common name Scientific name Number caught

Black rockfish Sebastes melanops 18

Chinook salmon - ocean fish Oncorhynchus tshawytscha 14

Dover sole Microstomus pacificus 5

Pacific hake Merluccius productus 41

Pacific pomfret Brama japonica 1

Spiny dogfish Squalus acanthias 1

Spotted ratfish Hydrolagus colliei 1

Haul #: 11 Latitude: 46.601 N Longitude: 124.497 W

Net type: rock-hopper Door type: 5-m Thyboron Codend liner:

Start date/time: 04/30/1998 9:52:00 PM Tow time (minutes): 42 Tow distance (km): 4.80

Speed (km/h): 6.9 Tow direction (degrees): 153 Total caught: 26

Common name Scientific name Number caught

Pacific herring Clupea pallasi 26

Haul #: 12 Latitude: 46.542 N Longitude: 124.453 W

Net type: rock-hopper Door type: 5-m Thyboron Codend liner:

Start date/time: 04/30/1998 11:25:00 PM Tow time (minutes): 89 Tow distance (km): 10.81

Speed (km/h): 7.3 Tow direction (degrees): 173 Total caught: 0

Common name Scientific name Number caught

No fish caught 0
34

Appendix 1. Continued.

Haul #: 13 Latitude: 46.199 N Longitude: 124.607 W

Net type: rock-hopper Door type: 5-m Thyboron Codend liner:

Start date/time: 05/01/1998 9:16:00 PM Tow time (minutes): 66 Tow distance (km): 6.21

Speed (km/h): 5.6 Tow direction (degrees): 99 Total caught: 330

Common name Scientific name Number caught

English sole Pleuronectes vetulus 4

Yellowtail rockfish Sebastes flavidus 1

Spiny dogfish Squalus acanthias 2

Pacific hake Merluccius productus 320

Pacific sanddab Citharichthys sordidus 3

Haul #: 14 Latitude: 46.220 N Longitude: 124.402 W

Net type: rock-hopper Door type: 5-m Thyboron Codend liner:

Start date/time: 05/02/1998 1:57:00 AM Tow time (minutes): 95 Tow distance (km): 10.31

Speed (km/h): 6.5 Tow direction (degrees): 257 Total caught: 13

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Pacific hake Merluccius productus 6

Pacific herring Clupea pallasi 5

Haul #: 15 Latitude: 46.583 N Longitude: 124.349 W

Net type: rock-hopper Door type: 3-m suber krube Codend liner:

Start date/time: 05/15/1998 9:22:00 PM Tow time (minutes): 34 Tow distance (km): 3.89

Speed (km/h): 6.9 Tow direction (degrees): 162 Total caught: 29

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 9

Pacific hake Merluccius productus 2

Pacific sanddab Citharichthys sordidus 17

Spiny dogfish Squalus acanthias 1

Haul #: 16 Latitude: 46.516 N Longitude: 124.338 W

Net type: rock-hopper Door type: 3-m suber krube Codend liner:

Start date/time: 05/15/1998 11:43:00 PM Tow time (minutes): 73 Tow distance (km): 7.72

Speed (km/h): 6.3 Tow direction (degrees): 354 Total caught: 1065

Common name Scientific name Number caught

Pacific sardine Sardinops sagax 4

Pacific sanddab Citharichthys sordidus 190

California market squid Loligo opalescens 18

Northern anchovy Engraulis mordax 789

Spiny dogfish Squalus acanthias 1

Pacific hake Merluccius productus 63
35

Appendix 1. Continued.

Haul #: 17 Latitude: 45.966 N Longitude: 124.199 W

Net type: rock-hopper Door type: 3-m suber krube Codend liner:

Start date/time: 05/16/1998 9:44:00 AM Tow time (minutes): 12 Tow distance (km): 1.02

Speed (km/h): 5.1 Tow direction (degrees): 336 Total caught: 26

Common name Scientific name Number caught

Pacific hake Merluccius productus 26

Haul #: 18 Latitude: 45.979 N Longitude: 124.194 W

Net type: rock-hopper Door type: 3-m suber krube Codend liner:

Start date/time: 05/16/1998 9:26:00 PM Tow time (minutes): 94 Tow distance (km): 9.08

Speed (km/h): 5.8 Tow direction (degrees): 171 Total caught: 54

Common name Scientific name Number caught

Pacific hake Merluccius productus 41

Pacific sanddab Citharichthys sordidus 13

Haul #: 19 Latitude: 46.135 N Longitude: 124.137 W

Net type: rock-hopper Door type: 3-m suber krube Codend liner:

Start date/time: 05/17/1998 3:12:00 AM Tow time (minutes): 66 Tow distance (km): 7.43

Speed (km/h): 6.8 Tow direction (degrees): 152 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 20 Latitude: 46.191 N Longitude: 124.513 W

Net type: rock-hopper Door type: 3-m suber krube Codend liner:

Start date/time: 05/17/1998 8:02:00 AM Tow time (minutes): 64 Tow distance (km): 6.75

Speed (km/h): 6.3 Tow direction (degrees): 108 Total caught: 28

Common name Scientific name Number caught

California market squid Loligo opalescens 8

Chinook salmon - ocean fish Oncorhynchus tshawytscha 3

Chinook salmon - yearling Oncorhynchus tshawytscha 5

Pacific herring Clupea pallasi 12
36

Appendix 1. Continued.

Haul #: 21 Latitude: 46.345 N Longitude: 124.301 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 05/31/1998 8:28:00 PM Tow time (minutes): 103 Tow distance (km): 11.02

Speed (km/h): 6.4 Tow direction (degrees): 188 Total caught: 950

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 0

Pacific hake Merluccius productus 65

Chub mackerel Scomber japonicus 6

California market squid Loligo opalescens 0

Pacific sardine Sardinops sagax 879

Haul #: 22 Latitude: 46.603 N Longitude: 124.293 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/01/1998 3:08:00 AM Tow time (minutes): 39 Tow distance (km): 4.78

Speed (km/h): 7.4 Tow direction (degrees): 167 Total caught: 260

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 200

Pacific hake Merluccius productus 39

Pacific sanddab Citharichthys sordidus 21

Smelts Osmeridae 0

Haul #: 23 Latitude: 46.518 N Longitude: 124.364 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/01/1998 5:46:00 AM Tow time (minutes): 46 Tow distance (km): 6.15

Speed (km/h): 8.0 Tow direction (degrees): 207 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 24 Latitude: 46.349 N Longitude: 124.262 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/01/1998 8:33:00 AM Tow time (minutes): 67 Tow distance (km): 5.93

Speed (km/h): 5.3 Tow direction (degrees): 349 Total caught: 0

Common name Scientific name Number caught

No fish caught 0
37

Appendix 1. Continued.

Haul #: 25 Latitude: 45.977 N Longitude: 124.287 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/01/1998 3:54:00 PM Tow time (minutes): 42 Tow distance (km): 3.89

Speed (km/h): 5.6 Tow direction (degrees): 172 Total caught: 4070

Common name Scientific name Number caught

Pacific sardine Sardinops sagax 152

Northern anchovy Engraulis mordax 10

Pacific hake Merluccius productus 3880

Pacific herring Clupea pallasi 10

Chub mackerel Scomber japonicus 18

Haul #: 26 Latitude: 46.095 N Longitude: 124.482 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/01/1998 10:26:00 PM Tow time (minutes): 62 Tow distance (km): 7.26

Speed (km/h): 7.0 Tow direction (degrees): 131 Total caught: 1287

Common name Scientific name Number caught

Pacific hake Merluccius productus 1263

Pacific sardine Sardinops sagax 0

Spiny dogfish Squalus acanthias 1

Chub mackerel Scomber japonicus 5

California market squid Loligo opalescens 17

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Northern anchovy Engraulis mordax 0

Haul #: 27 Latitude: 46.106 N Longitude: 124.316 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/02/1998 2:58:00 AM Tow time (minutes): 32 Tow distance (km): 3.63

Speed (km/h): 6.8 Tow direction (degrees): 351 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 28 Latitude: 46.291 N Longitude: 124.494 W

Net type: #4 rope trawl Door type: 5-m Thyboron Codend liner:

Start date/time: 06/02/1998 6:42:00 AM Tow time (minutes): 40 Tow distance (km): 4.12

Speed (km/h): 6.2 Tow direction (degrees): 95 Total caught: 12

Common name Scientific name Number caught

Jack mackerel Trachurus symmetricus 4

Northern anchovy Engraulis mordax 1

Pacific hake Merluccius productus 4

Pacific sardine Sardinops sagax 3
38

Appendix 1. Continued.

Haul #: 29 Latitude: 46.567 N Longitude: 124.225 W

Net type: #4 rope trawl Door type: 3-m suber krube Codend liner:

Start date/time: 06/12/1998 10:55:00 AM Tow time (minutes): 36 Tow distance (km): 3.65

Speed (km/h): 6.1 Tow direction (degrees): 201 Total caught: 152

Common name Scientific name Number caught

Pacific herring Clupea pallasi 0

Pacific sanddab Citharichthys sordidus 1

Pacific hake Merluccius productus 3

Northern anchovy Engraulis mordax 148

Pacific sardine Sardinops sagax 0

Haul #: 30 Latitude: 46.597 N Longitude: 124.247 W

Net type: #4 rope trawl Door type: 3-m suber krube Codend liner:

Start date/time: 06/13/1998 4:32:00 AM Tow time (minutes): 101 Tow distance (km): 7.07

Speed (km/h): 4.2 Tow direction (degrees): 178 Total caught: 64

Common name Scientific name Number caught

Blue shark Prionace glauca 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 3

Northern anchovy Engraulis mordax 0

Pacific herring Clupea pallasi 60

Pacific sardine Sardinops sagax 0

Haul #: 31 Latitude: 46.165 N Longitude: 124.249 W

Net type: #4 rope trawl Door type: 3-m suber krube Codend liner:

Start date/time: 06/13/1998 7:18:00 PM Tow time (minutes): 98 Tow distance (km): 10.73

Speed (km/h): 6.6 Tow direction (degrees): 170 Total caught: 6

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 4

Spiny dogfish Squalus acanthias 2
39

Appendix 1. Continued.

Haul #: 32 Latitude: 46.297 N Longitude: 124.216 W

Net type: #4 rope trawl Door type: 3-m suber krube Codend liner:

Start date/time: 06/13/1998 11:46:00 PM Tow time (minutes): 51 Tow distance (km): 6.06

Speed (km/h): 7.1 Tow direction (degrees): 185 Total caught: 379

Common name Scientific name Number caught

Pacific hake Merluccius productus 344

Spiny dogfish Squalus acanthias 1

Pacific herring Clupea pallasi 0

Pacific sanddab Citharichthys sordidus 12

Pacific sardine Sardinops sagax 0

English sole Pleuronectes vetulus 17

Chinook salmon - 0 age Oncorhynchus tshawytscha 5

California market squid Loligo opalescens 0

Northern anchovy Engraulis mordax 0

Haul #: 33 Latitude: 46.341 N Longitude: 124.208 W

Net type: #4 rope trawl Door type: 3-m suber krube Codend liner:

Start date/time: 06/14/1998 2:19:00 AM Tow time (minutes): 48 Tow distance (km): 5.98

Speed (km/h): 7.5 Tow direction (degrees): 162 Total caught: 215

Common name Scientific name Number caught

Smelts Osmeridae 0

Snailfish Cyclopteridae 1

Pacific sardine Sardinops sagax 0

Pacific sandfish Trichodon trichodon 2

Pacific hake Merluccius productus 181

Northern anchovy Engraulis mordax 0

Black rockfish Sebastes melanops 1

English sole Pleuronectes vetulus 1

Pacific sanddab Citharichthys sordidus 29

Haul #: 34 Latitude: 46.317 N Longitude: 124.395 W

Net type: #4 rope trawl Door type: 3-m suber krube Codend liner:

Start date/time: 06/14/1998 8:26:00 AM Tow time (minutes): 48 Tow distance (km): 4.30

Speed (km/h): 5.4 Tow direction (degrees): 128 Total caught: 429

Common name Scientific name Number caught

Pacific herring Clupea pallasi 420

California market squid Loligo opalescens 0

Spiny dogfish Squalus acanthias 1

Pacific hake Merluccius productus 8
40

Appendix 1. Continued.

Haul #: 35 Latitude: 46.624 N Longitude: 124.276 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/27/1998 10:05:00 PM Tow time (minutes): 30 Tow distance (km): 3.87

Speed (km/h): 7.7 Tow direction (degrees): 207 Total caught: 86

Common name Scientific name Number caught

Pacific hake Merluccius productus 29

Pacific sardine Sardinops sagax 1

Spiny dogfish Squalus acanthias 4

Whitebait smelt Allosmerus elongatus 50

Northern anchovy Engraulis mordax 2

Haul #: 36 Latitude: 46.600 N Longitude: 124.293 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/27/1998 11:50:00 PM Tow time (minutes): 32 Tow distance (km): 3.84

Speed (km/h): 7.2 Tow direction (degrees): 206 Total caught: 128

Common name Scientific name Number caught

Pacific herring Clupea pallasi 0

Pacific sardine Sardinops sagax 52

Smelts Osmeridae 0

Pacific hake Merluccius productus 55

Northern anchovy Engraulis mordax 0

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

Spiny dogfish Squalus acanthias 19

Haul #: 37 Latitude: 46.597 N Longitude: 124.307 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/28/1998 1:44:00 AM Tow time (minutes): 26 Tow distance (km): 2.98

Speed (km/h): 6.9 Tow direction (degrees): 207 Total caught: 1066

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 0

Spiny dogfish Squalus acanthias 20

Pacific sardine Sardinops sagax 837

Pacific hake Merluccius productus 201

Chinook salmon - ocean fish Oncorhynchus tshawytscha 8

California market squid Loligo opalescens 0

American shad Alosa sapidissima 0

Pacific herring Clupea pallasi 0
41

Appendix 1. Continued.

Haul #: 38 Latitude: 46.576 N Longitude: 124.406 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/28/1998 4:07:00 AM Tow time (minutes): 34 Tow distance (km): 4.05

Speed (km/h): 7.1 Tow direction (degrees): 189 Total caught: 375

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Pacific sardine Sardinops sagax 331

Pacific sanddab Citharichthys sordidus 1

Spiny dogfish Squalus acanthias 2

Pacific herring Clupea pallasi 0

Chub mackerel Scomber japonicus 21

California market squid Loligo opalescens 0

American shad Alosa sapidissima 1

Pacific hake Merluccius productus 18

Haul #: 39 Latitude: 45.935 N Longitude: 124.136 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/28/1998 9:05:00 PM Tow time (minutes): 31 Tow distance (km): 3.85

Speed (km/h): 7.5 Tow direction (degrees): 176 Total caught: 47

Common name Scientific name Number caught

California market squid Loligo opalescens 3

Chub mackerel Scomber japonicus 1

Northern anchovy Engraulis mordax 1

Pacific hake Merluccius productus 5

Pacific herring Clupea pallasi 35

Pacific sardine Sardinops sagax 2

Haul #: 40 Latitude: 45.892 N Longitude: 124.181 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/28/1998 10:38:00 PM Tow time (minutes): 46 Tow distance (km): 4.93

Speed (km/h): 6.4 Tow direction (degrees): 355 Total caught: 1085

Common name Scientific name Number caught

Jack mackerel Trachurus symmetricus 1

Pacific herring Clupea pallasi 0

Pacific sardine Sardinops sagax 45

Chub mackerel Scomber japonicus 277

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Lamprey Petromyzontidae 3

Pacific hake Merluccius productus 758
42

Appendix 1. Continued.

Haul #: 41 Latitude: 45.926 N Longitude: 124.179 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/29/1998 1:30:00 AM Tow time (minutes): 20 Tow distance (km): 2.45

Speed (km/h): 7.4 Tow direction (degrees): 176 Total caught: 1134

Common name Scientific name Number caught

American shad Alosa sapidissima 1

Bait fish 0

Chub mackerel Scomber japonicus 20

Lamprey Petromyzontidae 2

Pacific hake Merluccius productus 1025

Pacific sardine Sardinops sagax 86

Haul #: 42 Latitude: 45.912 N Longitude: 124.071 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/29/1998 3:32:00 AM Tow time (minutes): 31 Tow distance (km): 3.03

Speed (km/h): 5.9 Tow direction (degrees): 9 Total caught: 5

Common name Scientific name Number caught

Spiny dogfish Squalus acanthias 3

Bait 0

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Haul #: 43 Latitude: 46.032 N Longitude: 124.021 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 06/29/1998 5:15:00 AM Tow time (minutes): 49 Tow distance (km): 4.81

Speed (km/h): 5.9 Tow direction (degrees): 348 Total caught: 3

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 2
43

Appendix 1. Continued.

Haul #: 44 Latitude: 46.626 N Longitude: 124.334 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/12/1998 10:27:00 PM Tow time (minutes): 40 Tow distance (km): 4.61

Speed (km/h): 6.9 Tow direction (degrees): 168 Total caught: 127

Common name Scientific name Number caught

Bait fish 0

California market squid Loligo opalescens 34

Chinook salmon - 0 age Oncorhynchus tshawytscha 2

Chub mackerel Scomber japonicus 4

Jack mackerel Trachurus symmetricus 1

Pacific hake Merluccius productus 16

Pacific sardine Sardinops sagax 64

Rex sole Errex zachirus 1

Spiny dogfish Squalus acanthias 5

Haul #: 45 Latitude: 46.560 N Longitude: 124.363 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/13/1998 12:45:00 AM Tow time (minutes): 32 Tow distance (km): 3.87

Speed (km/h): 7.3 Tow direction (degrees): 179 Total caught: 4267

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 36

Pacific sardine Sardinops sagax 3

Pacific herring Clupea pallasi 4193

Shark Chondrichthyes 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

California market squid Loligo opalescens 5

Pacific hake Merluccius productus 28

Northern anchovy Engraulis mordax 0

Haul #: 46 Latitude: 46.493 N Longitude: 124.388 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/13/1998 2:45:00 AM Tow time (minutes): 30 Tow distance (km): 3.28

Speed (km/h): 6.6 Tow direction (degrees): 173 Total caught: 5431

Common name Scientific name Number caught

American shad Alosa sapidissima 0

Blue shark Prionace glauca 3

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

Chub mackerel Scomber japonicus 80

Pacific hake Merluccius productus 60

Pacific herring Clupea pallasi 5285

Shark Chondrichthyes 1
44

Appendix 1. Continued.

Haul #: 47 Latitude: 46.406 N Longitude: 124.423 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/13/1998 4:37:00 AM Tow time (minutes): 30 Tow distance (km): 3.44

Speed (km/h): 6.9 Tow direction (degrees): 162 Total caught: 183

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 4

Pacific herring Clupea pallasi 167

Jack mackerel Trachurus symmetricus 2

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

California market squid Loligo opalescens 8

Pacific hake Merluccius productus 1

Haul #: 48 Latitude: 45.931 N Longitude: 124.063 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/13/1998 9:55:00 PM Tow time (minutes): 30 Tow distance (km): 2.93

Speed (km/h): 5.9 Tow direction (degrees): 343 Total caught: 857

Common name Scientific name Number caught

Pacific hake Merluccius productus 5

Pacific herring Clupea pallasi 12

Pacific sardine Sardinops sagax 781

Smelts Osmeridae 59

Haul #: 49 Latitude: 45.971 N Longitude: 124.056 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/13/1998 11:17:00 PM Tow time (minutes): 30 Tow distance (km): 3.26

Speed (km/h): 6.5 Tow direction (degrees): 175 Total caught: 4680

Common name Scientific name Number caught

Pacific hake Merluccius productus 18

Pacific sardine Sardinops sagax 4657

Spiny dogfish Squalus acanthias 5
45

Appendix 1. Continued.

Haul #: 50 Latitude: 45.969 N Longitude: 124.164 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/14/1998 12:59:00 AM Tow time (minutes): 28 Tow distance (km): 4.27

Speed (km/h): 9.2 Tow direction (degrees): 7 Total caught: 155

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Spiny dogfish Squalus acanthias 2

Smelts Osmeridae 0

Shark Chondrichthyes 1

Pacific hake Merluccius productus 80

Pacific herring Clupea pallasi 17

American shad Alosa sapidissima 4

Pacific sardine Sardinops sagax 50

Haul #: 51 Latitude: 46.048 N Longitude: 124.277 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/14/1998 2:44:00 AM Tow time (minutes): 30 Tow distance (km): 3.17

Speed (km/h): 6.3 Tow direction (degrees): 343 Total caught: 1292

Common name Scientific name Number caught

Pacific herring Clupea pallasi 12

Pacific sardine Sardinops sagax 20

Pacific hake Merluccius productus 1220

Lamprey Petromyzontidae 1

Coho salmon - adult Oncorhynchus kisutch 1

Chub mackerel Scomber japonicus 27

American shad Alosa sapidissima 6

Chinook salmon - ocean fish Oncorhynchus tshawytscha 4

Jack mackerel Trachurus symmetricus 1

Haul #: 52 Latitude: 46.104 N Longitude: 124.386 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/14/1998 4:04:00 AM Tow time (minutes): 76 Tow distance (km): 3.60

Speed (km/h): 2.8 Tow direction (degrees): 347 Total caught: 120

Common name Scientific name Number caught

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

Pacific herring Clupea pallasi 70

Pacific hake Merluccius productus 32

American shad Alosa sapidissima 5

Chub mackerel Scomber japonicus 7

California market squid Loligo opalescens 3

Jack mackerel Trachurus symmetricus 2
46

Appendix 1. Continued.

Haul #: 53 Latitude: 46.615 N Longitude: 124.275 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/27/1998 10:37:00 PM Tow time (minutes): 33 Tow distance (km): 3.79

Speed (km/h): 6.9 Tow direction (degrees): 189 Total caught: 4072

Common name Scientific name Number caught

Pacific sanddab Citharichthys sordidus 2

Pacific herring Clupea pallasi 2267

Whitebait smelt Allosmerus elongatus 742

Spiny dogfish Squalus acanthias 6

Soupfin shark Galeorhinus zyopterus 2

California market squid Loligo opalescens 4

Pacific hake Merluccius productus 56

Northern anchovy Engraulis mordax 977

Chinook salmon - ocean fish Oncorhynchus tshawytscha 5

Pacific sardine Sardinops sagax 11

Haul #: 54 Latitude: 46.593 N Longitude: 124.407 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/28/1998 2:07:00 AM Tow time (minutes): 31 Tow distance (km): 3.62

Speed (km/h): 7.0 Tow direction (degrees): 181 Total caught: 93

Common name Scientific name Number caught

Pacific herring Clupea pallasi 33

Pacific sardine Sardinops sagax 2

Pacific hake Merluccius productus 24

Lamprey Petromyzontidae 1

Chub mackerel Scomber japonicus 15

Chinook salmon - yearling Oncorhynchus tshawytscha 1

California market squid Loligo opalescens 6

American shad Alosa sapidissima 5

Jack mackerel Trachurus symmetricus 5

Soupfin shark Galeorhinus zyopterus 1
47

Appendix 1. Continued.

Haul #: 55 Latitude: 46.538 N Longitude: 124.433 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/28/1998 3:24:00 AM Tow time (minutes): 34 Tow distance (km): 3.79

Speed (km/h): 6.7 Tow direction (degrees): 173 Total caught: 436

Common name Scientific name Number caught

California market squid Loligo opalescens 20

Pacific sardine Sardinops sagax 200

Pacific herring Clupea pallasi 156

Pacific hake Merluccius productus 28

Jack mackerel Trachurus symmetricus 1

Chub mackerel Scomber japonicus 24

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 4

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Haul #: 56 Latitude: 46.413 N Longitude: 124.456 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/28/1998 5:07:00 AM Tow time (minutes): 31 Tow distance (km): 3.83

Speed (km/h): 7.4 Tow direction (degrees): 173 Total caught: 158

Common name Scientific name Number caught

Jack mackerel Trachurus symmetricus 41

Pacific herring Clupea pallasi 22

Chub mackerel Scomber japonicus 14

California market squid Loligo opalescens 5

Pacific sardine Sardinops sagax 76

Haul #: 57 Latitude: 44.834 N Longitude: 124.965 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/28/1998 9:45:00 PM Tow time (minutes): 31 Tow distance (km): 3.69

Speed (km/h): 7.1 Tow direction (degrees): 4 Total caught: 110

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 32

Jack mackerel Trachurus symmetricus 60

Pacific pomfret Brama japonica 18
48

Appendix 1. Continued.

Haul #: 58 Latitude: 44.982 N Longitude: 124.977 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/28/1998 11:32:00 PM Tow time (minutes): 32 Tow distance (km): 4.05

Speed (km/h): 7.6 Tow direction (degrees): 359 Total caught: 47

Common name Scientific name Number caught

Pacific pomfret Brama japonica 1

California market squid Loligo opalescens 0

Jack mackerel Trachurus symmetricus 30

Lantern fish Myctophidae 12

Longfin Dragonfish Tactostoma macropus 4

Haul #: 59 Latitude: 45.222 N Longitude: 124.931 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/29/1998 1:52:00 AM Tow time (minutes): 31 Tow distance (km): 3.43

Speed (km/h): 6.6 Tow direction (degrees): 1 Total caught: 558

Common name Scientific name Number caught

Pacific pomfret Brama japonica 1

Longfin Dragonfish Tactostoma macropus 2

California market squid Loligo opalescens 70

Lantern fish Myctophidae 485

Haul #: 60 Latitude: 45.442 N Longitude: 124.704 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/29/1998 5:04:00 AM Tow time (minutes): 32 Tow distance (km): 4.05

Speed (km/h): 7.6 Tow direction (degrees): 187 Total caught: 56

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 1

Jack mackerel Trachurus symmetricus 16

Pacific hake Merluccius productus 39
49

Appendix 1. Continued.

Haul #: 61 Latitude: 45.954 N Longitude: 124.051 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/29/1998 9:41:00 PM Tow time (minutes): 31 Tow distance (km): 3.60

Speed (km/h): 7.0 Tow direction (degrees): 6 Total caught: 381

Common name Scientific name Number caught

Pacific herring Clupea pallasi 20

Spiny dogfish Squalus acanthias 5

Whitebait smelt Allosmerus elongatus 70

Pacific sanddab Citharichthys sordidus 27

Pacific lamprey Lampetra tridentata 1

Coho salmon - adult Oncorhynchus kisutch 1

Chub mackerel Scomber japonicus 11

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

American shad Alosa sapidissima 7

Pacific hake Merluccius productus 237

Haul #: 62 Latitude: 46.114 N Longitude: 124.162 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/30/1998 12:55:00 AM Tow time (minutes): 30 Tow distance (km): 3.53

Speed (km/h): 7.1 Tow direction (degrees): 0 Total caught: 295

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 6

Jack mackerel Trachurus symmetricus 3

Pacific hake Merluccius productus 106

Pacific herring Clupea pallasi 1

Pacific sanddab Citharichthys sordidus 2

Pacific sardine Sardinops sagax 176

American shad Alosa sapidissima 1

Haul #: 63 Latitude: 46.092 N Longitude: 124.301 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 07/30/1998 3:33:00 AM Tow time (minutes): 30 Tow distance (km): 3.20

Speed (km/h): 6.4 Tow direction (degrees): 1 Total caught: 1887

Common name Scientific name Number caught

Coho salmon - juvenile Oncorhynchus kisutch 1

Soupfin shark Galeorhinus zyopterus 1

Pacific sardine Sardinops sagax 268

Chub mackerel Scomber japonicus 54

California market squid Loligo opalescens 0

Pacific hake Merluccius productus 1562

Lamprey Petromyzontidae 1
50

Appendix 1. Continued.

Haul #: 64 Latitude: 46.571 N Longitude: 124.258 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/10/1998 10:07:00 PM Tow time (minutes): 30 Tow distance (km): 3.42

Speed (km/h): 6.8 Tow direction (degrees): 180 Total caught: 387

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 9

Whitebait smelt Allosmerus elongatus 186

Pacific sanddab Citharichthys sordidus 40

Pacific hake Merluccius productus 82

Chub mackerel Scomber japonicus 10

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 3

Pacific herring Clupea pallasi 56

Haul #: 65 Latitude: 46.521 N Longitude: 124.293 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/11/1998 12:40:00 AM Tow time (minutes): 32 Tow distance (km): 3.65

Speed (km/h): 6.9 Tow direction (degrees): 171 Total caught: 103

Common name Scientific name Number caught

Spiny dogfish Squalus acanthias 8

Whitebait smelt Allosmerus elongatus 3

Pacific herring Clupea pallasi 10

Pacific sanddab Citharichthys sordidus 3

Northern anchovy Engraulis mordax 51

Chub mackerel Scomber japonicus 9

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Pacific hake Merluccius productus 18
51

Appendix 1. Continued.

Haul #: 66 Latitude: 46.462 N Longitude: 124.405 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/11/1998 2:22:00 AM Tow time (minutes): 35 Tow distance (km): 3.17

Speed (km/h): 5.4 Tow direction (degrees): 175 Total caught: 400

Common name Scientific name Number caught

Pacific herring Clupea pallasi 101

American shad Alosa sapidissima 10

Pacific sanddab Citharichthys sordidus 0

Pacific hake Merluccius productus 39

Northern anchovy Engraulis mordax 26

Chub mackerel Scomber japonicus 20

California market squid Loligo opalescens 2

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

Jack mackerel Trachurus symmetricus 76

Pacific sardine Sardinops sagax 124

Haul #: 67 Latitude: 46.397 N Longitude: 124.476 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/11/1998 5:07:00 AM Tow time (minutes): 64 Tow distance (km): 3.94

Speed (km/h): 3.7 Tow direction (degrees): 185 Total caught: 716

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 18

Skates Rajidae 1

Pacific sardine Sardinops sagax 44

Pacific herring Clupea pallasi 359

Jack mackerel Trachurus symmetricus 46

Chinook salmon - yearling Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 1

Pacific hake Merluccius productus 246
52

Appendix 1. Continued.

Haul #: 68 Latitude: 45.988 N Longitude: 124.076 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/11/1998 9:49:00 PM Tow time (minutes): 33 Tow distance (km): 3.52

Speed (km/h): 6.4 Tow direction (degrees): 344 Total caught: 439

Common name Scientific name Number caught

Pacific hake Merluccius productus 13

Pacific herring Clupea pallasi 159

Ragfish Icosteus aenigmaticus 1

Coho salmon - adult Oncorhynchus kisutch 1

Whitebait smelt Allosmerus elongatus 260

Chinook salmon - ocean fish Oncorhynchus tshawytscha 3

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

Coho salmon - juvenile Oncorhynchus kisutch 1

Haul #: 69 Latitude: 46.043 N Longitude: 124.138 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/11/1998 11:23:00 PM Tow time (minutes): 34 Tow distance (km): 3.73

Speed (km/h): 6.6 Tow direction (degrees): 337 Total caught: 28

Common name Scientific name Number caught

Pacific sanddab Citharichthys sordidus 2

Pacific tomcod Microgadus proximus 1

Pacific herring Clupea pallasi 14

Pacific hake Merluccius productus 4

Whitebait smelt Allosmerus elongatus 7

Haul #: 70 Latitude: 46.094 N Longitude: 124.223 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/12/1998 12:44:00 AM Tow time (minutes): 41 Tow distance (km): 4.70

Speed (km/h): 6.9 Tow direction (degrees): 349 Total caught: 96

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 3

Pacific hake Merluccius productus 76

Pacific herring Clupea pallasi 4

Whitebait smelt Allosmerus elongatus 13
53

Appendix 1. Continued.

Haul #: 71 Latitude: 46.138 N Longitude: 124.296 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/12/1998 3:00:00 AM Tow time (minutes): 35 Tow distance (km): 3.39

Speed (km/h): 5.8 Tow direction (degrees): 8 Total caught: 1781

Common name Scientific name Number caught

Coho salmon - adult Oncorhynchus kisutch 4

Pacific hake Merluccius productus 1772

Spiny dogfish Squalus acanthias 1

Chub mackerel Scomber japonicus 4

Haul #: 72 Latitude: 46.126 N Longitude: 124.111 W

Net type: nordic 264 rope trawl Door type: 3-m foam filled Codend liner:

Start date/time: 08/12/1998 6:08:00 AM Tow time (minutes): 30 Tow distance (km): 3.50

Speed (km/h): 7.0 Tow direction (degrees): 244 Total caught: 31

Common name Scientific name Number caught

Pacific herring Clupea pallasi 15

Pacific sanddab Citharichthys sordidus 1

Pacific hake Merluccius productus 2

Coho salmon - juvenile Oncorhynchus kisutch 5

Coho salmon - adult Oncorhynchus kisutch 4

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Chinook salmon - 0 age Oncorhynchus tshawytscha 3

Haul #: 73 Latitude: 46.142 N Longitude: 124.178 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/13/1999 12:48:00 PM Tow time (minutes): 35 Tow distance (km): 3.38

Speed (km/h): 5.8 Tow direction (degrees): 218 Total caught: 246

Common name Scientific name Number caught

Whitebait smelt Allosmerus elongatus 6

Northern anchovy Engraulis mordax 204

Pacific herring Clupea pallasi 5

Pacific staghorn sculpin Leptocottus armatus 1

Starry flounder Platichthys stellatus 1

California market squid Loligo opalescens 29
54

Appendix 1. Continued.

Haul #: 74 Latitude: 46.149 N Longitude: 124.158 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/14/1999 1:03:00 PM Tow time (minutes): 59 Tow distance (km): 7.02

Speed (km/h): 7.1 Tow direction (degrees): 184 Total caught: 10

Common name Scientific name Number caught

Whitebait smelt Allosmerus elongatus 8

Coho salmon - juvenile Oncorhynchus kisutch 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Haul #: 75 Latitude: 46.074 N Longitude: 124.338 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/14/1999 3:25:00 PM Tow time (minutes): 57 Tow distance (km): 4.85

Speed (km/h): 5.1 Tow direction (degrees): 2 Total caught: 1

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Haul #: 76 Latitude: 46.122 N Longitude: 124.452 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/14/1999 5:28:00 PM Tow time (minutes): 42 Tow distance (km): 3.18

Speed (km/h): 4.5 Tow direction (degrees): 345 Total caught: 1

Common name Scientific name Number caught

Pacific hake Merluccius productus 1

Haul #: 77 Latitude: 46.664 N Longitude: 124.783 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/14/1999 11:20:00 PM Tow time (minutes): 42 Tow distance (km): 3.12

Speed (km/h): 4.5 Tow direction (degrees): 182 Total caught: 8

Common name Scientific name Number caught

Pacific hake Merluccius productus 8

Haul #: 78 Latitude: 46.645 N Longitude: 124.609 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/15/1999 1:29:00 AM Tow time (minutes): 36 Tow distance (km): 3.13

Speed (km/h): 5.2 Tow direction (degrees): 358 Total caught: 1

Common name Scientific name Number caught

Pacific hake Merluccius productus 1
55

Appendix 1. Continued.

Haul #: 79 Latitude: 46.650 N Longitude: 124.517 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/15/1999 3:21:00 AM Tow time (minutes): 41 Tow distance (km): 2.88

Speed (km/h): 4.2 Tow direction (degrees): 158 Total caught: 16

Common name Scientific name Number caught

Pacific sanddab Citharichthys sordidus 12

Whitebait smelt Allosmerus elongatus 4

Haul #: 80 Latitude: 46.657 N Longitude: 124.401 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/15/1999 5:30:00 AM Tow time (minutes): 35 Tow distance (km): 4.15

Speed (km/h): 7.1 Tow direction (degrees): 178 Total caught: 16

Common name Scientific name Number caught

Surf smelt Hypomesus pretiosus 1

Whitebait smelt Allosmerus elongatus 4

Snailfish Cyclopteridae 1

Pacific sanddab Citharichthys sordidus 8

Eulachon Thaleichthys pacificus 1

Sand sole Psettichthys melanostictus 1

Haul #: 81 Latitude: 46.663 N Longitude: 124.289 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/15/1999 7:28:00 AM Tow time (minutes): 36 Tow distance (km): 3.56

Speed (km/h): 5.9 Tow direction (degrees): 173 Total caught: 2

Common name Scientific name Number caught

Pacific herring Clupea pallasi 1

Coho salmon - juvenile Oncorhynchus kisutch 1

Haul #: 82 Latitude: 46.656 N Longitude: 124.172 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/15/1999 9:21:00 AM Tow time (minutes): 34 Tow distance (km): 3.19

Speed (km/h): 5.6 Tow direction (degrees): 180 Total caught: 172

Common name Scientific name Number caught

Starry flounder Platichthys stellatus 33

Whitebait smelt Allosmerus elongatus 2

Surf smelt Hypomesus pretiosus 2

Smelts Osmeridae 100

Pacific herring Clupea pallasi 34

Unidentified bony fish Osteichthyes 1
56

Appendix 1. Continued.

Haul #: 83 Latitude: 46.646 N Longitude: 124.786 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/22/1999 11:38:00 PM Tow time (minutes): 58 Tow distance (km): 5.71

Speed (km/h): 5.9 Tow direction (degrees): 168 Total caught: 2

Common name Scientific name Number caught

Pacific hake Merluccius productus 2

Haul #: 84 Latitude: 46.591 N Longitude: 124.608 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/23/1999 2:09:00 AM Tow time (minutes): 51 Tow distance (km): 5.28

Speed (km/h): 6.2 Tow direction (degrees): 1 Total caught: 5

Common name Scientific name Number caught

Pacific hake Merluccius productus 5

Haul #: 85 Latitude: 46.652 N Longitude: 124.508 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/23/1999 4:16:00 AM Tow time (minutes): 30 Tow distance (km): 3.15

Speed (km/h): 6.3 Tow direction (degrees): 168 Total caught: 4

Common name Scientific name Number caught

Pacific hake Merluccius productus 4

Haul #: 86 Latitude: 46.620 N Longitude: 124.404 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/23/1999 5:50:00 AM Tow time (minutes): 21 Tow distance (km): 1.41

Speed (km/h): 4.0 Tow direction (degrees): 352 Total caught: 9

Common name Scientific name Number caught

Pacific herring Clupea pallasi 9

Haul #: 87 Latitude: 46.656 N Longitude: 124.284 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/23/1999 7:21:00 AM Tow time (minutes): 34 Tow distance (km): 3.75

Speed (km/h): 6.6 Tow direction (degrees): 161 Total caught: 1

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Haul #: 88 Latitude: 46.130 N Longitude: 124.568 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/23/1999 10:05:00 PM Tow time (minutes): 30 Tow distance (km): 1.45

Speed (km/h): 2.9 Tow direction (degrees): 1 Total caught: 0

Common name Scientific name Number caught

No fish caught 0
57

Appendix 1. Continued.

Haul #: 89 Latitude: 46.152 N Longitude: 124.455 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/24/1999 12:22:00 AM Tow time (minutes): 30 Tow distance (km): 3.38

Speed (km/h): 6.8 Tow direction (degrees): 196 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 90 Latitude: 46.156 N Longitude: 124.334 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/24/1999 2:38:00 AM Tow time (minutes): 36 Tow distance (km): 4.25

Speed (km/h): 7.1 Tow direction (degrees): 185 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 91 Latitude: 46.141 N Longitude: 124.216 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/24/1999 4:46:00 AM Tow time (minutes): 32 Tow distance (km): 3.54

Speed (km/h): 6.6 Tow direction (degrees): 183 Total caught: 78

Common name Scientific name Number caught

American shad Alosa sapidissima 1

California market squid Loligo opalescens 45

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Eulachon Thaleichthys pacificus 6

Pacific hake Merluccius productus 12

Pacific sanddab Citharichthys sordidus 1

Slender sole Lyopsetta exilis 3

Surf smelt Hypomesus pretiosus 9

Haul #: 92 Latitude: 46.120 N Longitude: 124.156 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/24/1999 6:02:00 AM Tow time (minutes): 30 Tow distance (km): 3.26

Speed (km/h): 6.5 Tow direction (degrees): 353 Total caught: 13

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Whitebait smelt Allosmerus elongatus 11

California market squid Loligo opalescens 0

American shad Alosa sapidissima 1
58

Appendix 1. Continued.

Haul #: 93 Latitude: 46.125 N Longitude: 124.060 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 04/24/1999 8:00:00 AM Tow time (minutes): 30 Tow distance (km): 2.84

Speed (km/h): 5.7 Tow direction (degrees): 331 Total caught: 2

Common name Scientific name Number caught

Pacific sardine Sardinops sagax 1

American shad Alosa sapidissima 1

Haul #: 94 Latitude: 46.693 N Longitude: 124.183 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/04/1999 9:05:00 PM Tow time (minutes): 31 Tow distance (km): 3.06

Speed (km/h): 5.9 Tow direction (degrees): 174 Total caught: 1507

Common name Scientific name Number caught

American shad Alosa sapidissima 6

California market squid Loligo opalescens 79

Chinook salmon - ocean fish Oncorhynchus tshawytscha 4

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Longfin smelt Spirinchus thaleichthys 62

Northern anchovy Engraulis mordax 1089

Pacific herring Clupea pallasi 13

Sablefish Anoplopoma fimbria 1

Whitebait smelt Allosmerus elongatus 251

Haul #: 95 Latitude: 46.657 N Longitude: 124.295 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/04/1999 10:55:00 PM Tow time (minutes): 32 Tow distance (km): 3.00

Speed (km/h): 5.6 Tow direction (degrees): 174 Total caught: 2566

Common name Scientific name Number caught

Eulachon Thaleichthys pacificus 1

California market squid Loligo opalescens 115

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Pacific hake Merluccius productus 33

Pacific herring Clupea pallasi 2367

Pacific sanddab Citharichthys sordidus 10

Plainfin midshipman Porichthys notatus 1

Spiny dogfish Squalus acanthias 1

Whitebait smelt Allosmerus elongatus 34

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2
59

Appendix 1. Continued.

Haul #: 96 Latitude: 46.631 N Longitude: 124.399 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 2:16:00 AM Tow time (minutes): 31 Tow distance (km): 2.65

Speed (km/h): 5.1 Tow direction (degrees): 357 Total caught: 1773

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 1

Pacific hake Merluccius productus 37

Pacific herring Clupea pallasi 1735

Haul #: 97 Latitude: 46.659 N Longitude: 124.500 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 4:03:00 AM Tow time (minutes): 35 Tow distance (km): 3.69

Speed (km/h): 6.3 Tow direction (degrees): 189 Total caught: 125

Common name Scientific name Number caught

Pacific hake Merluccius productus 4

Pacific herring Clupea pallasi 117

California market squid Loligo opalescens 1

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Eulachon Thaleichthys pacificus 1

Haul #: 98 Latitude: 46.629 N Longitude: 124.612 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 5:50:00 AM Tow time (minutes): 32 Tow distance (km): 2.86

Speed (km/h): 5.4 Tow direction (degrees): 7 Total caught: 9

Common name Scientific name Number caught

Coho salmon - juvenile Oncorhynchus kisutch 1

Pacific herring Clupea pallasi 7

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Haul #: 99 Latitude: 46.666 N Longitude: 124.784 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 8:03:00 AM Tow time (minutes): 31 Tow distance (km): 3.05

Speed (km/h): 5.9 Tow direction (degrees): 177 Total caught: 2

Common name Scientific name Number caught

Spiny dogfish Squalus acanthias 2
60

Appendix 1. Continued.

Haul #: 100 Latitude: 46.156 N Longitude: 124.564 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 8:20:00 PM Tow time (minutes): 32 Tow distance (km): 2.61

Speed (km/h): 4.9 Tow direction (degrees): 183 Total caught: 2

Common name Scientific name Number caught

Spiny dogfish Squalus acanthias 2

Haul #: 101 Latitude: 46.130 N Longitude: 124.455 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 10:05:00 PM Tow time (minutes): 30 Tow distance (km): 2.81

Speed (km/h): 5.6 Tow direction (degrees): 2 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 102 Latitude: 46.162 N Longitude: 124.339 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/05/1999 11:47:00 PM Tow time (minutes): 31 Tow distance (km): 3.50

Speed (km/h): 6.8 Tow direction (degrees): 187 Total caught: 20

Common name Scientific name Number caught

Pacific herring Clupea pallasi 1

Pacific hake Merluccius productus 15

Coho salmon - juvenile Oncorhynchus kisutch 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Haul #: 103 Latitude: 46.140 N Longitude: 124.219 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/06/1999 1:31:00 AM Tow time (minutes): 30 Tow distance (km): 3.18

Speed (km/h): 6.4 Tow direction (degrees): 1 Total caught: 204

Common name Scientific name Number caught

Pacific herring Clupea pallasi 15

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

Whitebait smelt Allosmerus elongatus 123

Pacific sanddab Citharichthys sordidus 1

California market squid Loligo opalescens 45

Eulachon Thaleichthys pacificus 6

Pacific hake Merluccius productus 11

Northern anchovy Engraulis mordax 1
61

Appendix 1. Continued.

Haul #: 104 Latitude: 46.168 N Longitude: 124.156 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/06/1999 2:52:00 AM Tow time (minutes): 31 Tow distance (km): 3.03

Speed (km/h): 5.9 Tow direction (degrees): 179 Total caught: 404

Common name Scientific name Number caught

California market squid Loligo opalescens 248

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Northern anchovy Engraulis mordax 1

Pacific herring Clupea pallasi 16

Whitebait smelt Allosmerus elongatus 138

Haul #: 105 Latitude: 46.147 N Longitude: 124.072 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/06/1999 4:22:00 AM Tow time (minutes): 33 Tow distance (km): 3.46

Speed (km/h): 6.3 Tow direction (degrees): 355 Total caught: 211

Common name Scientific name Number caught

California market squid Loligo opalescens 142

Pacific herring Clupea pallasi 39

Whitebait smelt Allosmerus elongatus 30

Haul #: 106 Latitude: 46.648 N Longitude: 124.289 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/13/1999 9:44:00 PM Tow time (minutes): 31 Tow distance (km): 3.29

Speed (km/h): 6.4 Tow direction (degrees): 5 Total caught: 37

Common name Scientific name Number caught

California market squid Loligo opalescens 3

Whitebait smelt Allosmerus elongatus 2

Pacific sanddab Citharichthys sordidus 4

Pacific herring Clupea pallasi 26

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Coho salmon - adult Oncorhynchus kisutch 1

Haul #: 107 Latitude: 46.661 N Longitude: 124.399 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/13/1999 11:42:00 PM Tow time (minutes): 30 Tow distance (km): 3.77

Speed (km/h): 7.5 Tow direction (degrees): 182 Total caught: 8

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Pacific hake Merluccius productus 1

Pacific herring Clupea pallasi 5

Ragfish Icosteus aenigmaticus 1
62

Appendix 1. Continued.

Haul #: 108 Latitude: 46.632 N Longitude: 124.511 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/14/1999 1:17:00 AM Tow time (minutes): 34 Tow distance (km): 3.45

Speed (km/h): 6.1 Tow direction (degrees): 356 Total caught: 1

Common name Scientific name Number caught

Steelhead Oncorhynchus mykiss 1

Haul #: 109 Latitude: 46.660 N Longitude: 124.613 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/14/1999 3:00:00 AM Tow time (minutes): 31 Tow distance (km): 3.12

Speed (km/h): 6.0 Tow direction (degrees): 175 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 110 Latitude: 46.656 N Longitude: 124.784 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/14/1999 5:08:00 AM Tow time (minutes): 31 Tow distance (km): 3.30

Speed (km/h): 6.4 Tow direction (degrees): 178 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 111 Latitude: 46.161 N Longitude: 124.570 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/14/1999 9:13:00 PM Tow time (minutes): 30 Tow distance (km): 2.85

Speed (km/h): 5.7 Tow direction (degrees): 172 Total caught: 983

Common name Scientific name Number caught

Pacific hake Merluccius productus 983

Haul #: 112 Latitude: 46.137 N Longitude: 124.456 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/14/1999 10:52:00 PM Tow time (minutes): 30 Tow distance (km): 3.20

Speed (km/h): 6.4 Tow direction (degrees): 358 Total caught: 48

Common name Scientific name Number caught

Pacific hake Merluccius productus 4

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 43
63

Appendix 1. Continued.

Haul #: 113 Latitude: 46.167 N Longitude: 124.334 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/15/1999 12:35:00 AM Tow time (minutes): 31 Tow distance (km): 3.63

Speed (km/h): 7.0 Tow direction (degrees): 173 Total caught: 9

Common name Scientific name Number caught

California market squid Loligo opalescens 6

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Pacific hake Merluccius productus 1

Haul #: 114 Latitude: 46.136 N Longitude: 124.217 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/15/1999 2:09:00 AM Tow time (minutes): 31 Tow distance (km): 2.50

Speed (km/h): 4.8 Tow direction (degrees): 353 Total caught: 66

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Whitebait smelt Allosmerus elongatus 1

Pacific sanddab Citharichthys sordidus 2

Pacific herring Clupea pallasi 7

Night smelt Spirinchus starksi 1

California market squid Loligo opalescens 43

Northern anchovy Engraulis mordax 11

Haul #: 115 Latitude: 46.155 N Longitude: 124.158 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/15/1999 3:34:00 AM Tow time (minutes): 31 Tow distance (km): 3.43

Speed (km/h): 6.6 Tow direction (degrees): 174 Total caught: 764

Common name Scientific name Number caught

Black rockfish Sebastes melanops 1

Whitebait smelt Allosmerus elongatus 181

Pacific herring Clupea pallasi 6

Northern anchovy Engraulis mordax 8

California market squid Loligo opalescens 567

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1
64

Appendix 1. Continued.

Haul #: 116 Latitude: 46.147 N Longitude: 124.074 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 05/15/1999 5:25:00 AM Tow time (minutes): 25 Tow distance (km): 2.91

Speed (km/h): 7.0 Tow direction (degrees): 170 Total caught: 123

Common name Scientific name Number caught

California market squid Loligo opalescens 121

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Haul #: 117 Latitude: 46.655 N Longitude: 124.293 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/27/1999 8:49:00 PM Tow time (minutes): 31 Tow distance (km): 4.13

Speed (km/h): 8.0 Tow direction (degrees): 184 Total caught: 16

Common name Scientific name Number caught

American shad Alosa sapidissima 1

California market squid Loligo opalescens 6

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Pacific herring Clupea pallasi 7

Pacific sanddab Citharichthys sordidus 1

Haul #: 118 Latitude: 46.657 N Longitude: 124.401 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/27/1999 10:53:00 PM Tow time (minutes): 32 Tow distance (km): 4.74

Speed (km/h): 8.9 Tow direction (degrees): 181 Total caught: 10

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Pacific hake Merluccius productus 1

Pacific herring Clupea pallasi 7

Haul #: 119 Latitude: 46.661 N Longitude: 124.509 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/28/1999 1:08:00 AM Tow time (minutes): 32 Tow distance (km): 4.06

Speed (km/h): 7.6 Tow direction (degrees): 181 Total caught: 3

Common name Scientific name Number caught

Pacific hake Merluccius productus 1

Pacific herring Clupea pallasi 2
65

Appendix 1. Continued.

Haul #: 120 Latitude: 46.652 N Longitude: 124.602 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/28/1999 3:16:00 AM Tow time (minutes): 31 Tow distance (km): 4.05

Speed (km/h): 7.8 Tow direction (degrees): 185 Total caught: 15

Common name Scientific name Number caught

Pacific hake Merluccius productus 4

Pacific herring Clupea pallasi 11

Haul #: 121 Latitude: 46.675 N Longitude: 124.785 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/28/1999 5:46:00 AM Tow time (minutes): 32 Tow distance (km): 4.13

Speed (km/h): 7.8 Tow direction (degrees): 192 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 122 Latitude: 46.157 N Longitude: 124.571 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/28/1999 7:20:00 PM Tow time (minutes): 30 Tow distance (km): 4.54

Speed (km/h): 9.1 Tow direction (degrees): 176 Total caught: 45

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Jack mackerel Trachurus symmetricus 43

Pacific hake Merluccius productus 1

Haul #: 123 Latitude: 46.163 N Longitude: 124.456 W

Net type: nordic 264 rope trawl Door type: 3m SK Codend liner:

Start date/time: 05/28/1999 9:38:00 PM Tow time (minutes): 30 Tow distance (km): 3.94

Speed (km/h): 7.9 Tow direction (degrees): 180 Total caught: 1

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Haul #: 124 Latitude: 46.160 N Longitude: 124.332 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/28/1999 11:48:00 PM Tow time (minutes): 30 Tow distance (km): 4.15

Speed (km/h): 8.3 Tow direction (degrees): 189 Total caught: 3

Common name Scientific name Number caught

Pacific hake Merluccius productus 3
66

Appendix 1. Continued.

Haul #: 125 Latitude: 46.155 N Longitude: 124.222 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/29/1999 1:49:00 AM Tow time (minutes): 30 Tow distance (km): 3.98

Speed (km/h): 8.0 Tow direction (degrees): 188 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 126 Latitude: 46.156 N Longitude: 124.162 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/29/1999 3:43:00 AM Tow time (minutes): 31 Tow distance (km): 3.63

Speed (km/h): 7.0 Tow direction (degrees): 200 Total caught: 30

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 1

Whitebait smelt Allosmerus elongatus 10

Pacific staghorn sculpin Leptocottus armatus 1

Pacific sanddab Citharichthys sordidus 11

Pacific hake Merluccius productus 6

Pacific herring Clupea pallasi 1

Haul #: 127 Latitude: 46.161 N Longitude: 124.074 W

Net type: nordic 264 rope trawl Door type: 3 m SK Codend liner:

Start date/time: 05/29/1999 5:46:00 AM Tow time (minutes): 27 Tow distance (km): 3.53

Speed (km/h): 7.8 Tow direction (degrees): 178 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 128 Latitude: 46.673 N Longitude: 124.182 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/12/1999 7:36:00 PM Tow time (minutes): 32 Tow distance (km): 2.62

Speed (km/h): 4.9 Tow direction (degrees): 201 Total caught: 32

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 4

Skates Rajidae 1

Starry flounder Platichthys stellatus 27
67

Appendix 1. Continued.

Haul #: 129 Latitude: 46.654 N Longitude: 124.295 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/12/1999 9:19:00 PM Tow time (minutes): 30 Tow distance (km): 3.09

Speed (km/h): 6.2 Tow direction (degrees): 8 Total caught: 28

Common name Scientific name Number caught

Pacific herring Clupea pallasi 1

Thresher shark Alopias vulpinus 1

Spiny dogfish Squalus acanthias 4

American shad Alosa sapidissima 1

Pacific sanddab Citharichthys sordidus 9

Coho salmon - juvenile Oncorhynchus kisutch 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Chinook salmon - yearling Oncorhynchus tshawytscha 8

Pacific hake Merluccius productus 2

Haul #: 130 Latitude: 46.673 N Longitude: 124.399 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/12/1999 11:13:00 PM Tow time (minutes): 30 Tow distance (km): 3.45

Speed (km/h): 6.9 Tow direction (degrees): 175 Total caught: 48

Common name Scientific name Number caught

Jack mackerel Trachurus symmetricus 27

Pacific sardine Sardinops sagax 5

Pacific sanddab Citharichthys sordidus 1

Pacific hake Merluccius productus 4

Spiny dogfish Squalus acanthias 1

Chub mackerel Scomber japonicus 6

Chinook salmon - yearling Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 1

Pacific herring Clupea pallasi 2

Haul #: 131 Latitude: 46.642 N Longitude: 124.508 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/13/1999 12:53:00 AM Tow time (minutes): 30 Tow distance (km): 2.53

Speed (km/h): 5.1 Tow direction (degrees): 359 Total caught: 362

Common name Scientific name Number caught

Pacific hake Merluccius productus 34

Pacific sardine Sardinops sagax 73

Pacific herring Clupea pallasi 3

Jack mackerel Trachurus symmetricus 133

American shad Alosa sapidissima 3

Chub mackerel Scomber japonicus 116
68

Appendix 1. Continued.

Haul #: 132 Latitude: 46.676 N Longitude: 124.605 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/13/1999 2:39:00 AM Tow time (minutes): 30 Tow distance (km): 3.17

Speed (km/h): 6.3 Tow direction (degrees): 177 Total caught: 103

Common name Scientific name Number caught

Pacific hake Merluccius productus 101

Pacific sardine Sardinops sagax 1

Unidentified bony fish Osteichthyes 1

Haul #: 133 Latitude: 46.653 N Longitude: 124.787 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/13/1999 4:53:00 AM Tow time (minutes): 30 Tow distance (km): 2.63

Speed (km/h): 5.3 Tow direction (degrees): 1 Total caught: 4

Common name Scientific name Number caught

Jack mackerel Trachurus symmetricus 3

Spiny dogfish Squalus acanthias 1

Haul #: 134 Latitude: 46.157 N Longitude: 124.572 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/13/1999 10:02:00 PM Tow time (minutes): 30 Tow distance (km): 3.25

Speed (km/h): 6.5 Tow direction (degrees): 186 Total caught: 89

Common name Scientific name Number caught

Pacific sardine Sardinops sagax 1

Pacific hake Merluccius productus 41

Jack mackerel Trachurus symmetricus 47

Haul #: 135 Latitude: 46.141 N Longitude: 124.457 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/13/1999 11:51:00 PM Tow time (minutes): 31 Tow distance (km): 2.75

Speed (km/h): 5.3 Tow direction (degrees): 359 Total caught: 340

Common name Scientific name Number caught

Pacific hake Merluccius productus 228

Pacific sardine Sardinops sagax 110

Spiny dogfish Squalus acanthias 1

Jack mackerel Trachurus symmetricus 1
69

Appendix 1. Continued.

Haul #: 136 Latitude: 46.168 N Longitude: 124.335 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/14/1999 1:42:00 AM Tow time (minutes): 31 Tow distance (km): 2.98

Speed (km/h): 5.8 Tow direction (degrees): 182 Total caught: 129

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 26

Jack mackerel Trachurus symmetricus 2

Pacific hake Merluccius productus 56

Pacific sardine Sardinops sagax 44

Wolf-eel Anarrhichthys ocellatus 1

Haul #: 137 Latitude: 46.161 N Longitude: 124.222 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/14/1999 3:27:00 AM Tow time (minutes): 30 Tow distance (km): 2.95

Speed (km/h): 5.9 Tow direction (degrees): 349 Total caught: 0

Common name Scientific name Number caught

No fish caught 0

Haul #: 138 Latitude: 46.164 N Longitude: 124.158 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 06/14/1999 5:05:00 AM Tow time (minutes): 30 Tow distance (km): 2.91

Speed (km/h): 5.8 Tow direction (degrees): 180 Total caught: 16

Common name Scientific name Number caught

Coho salmon - juvenile Oncorhynchus kisutch 14

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Haul #: 139 Latitude: 46.165 N Longitude: 124.075 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 06/14/1999 6:37:00 AM Tow time (minutes): 31 Tow distance (km): 2.83

Speed (km/h): 5.5 Tow direction (degrees): 357 Total caught: 13

Common name Scientific name Number caught

Starry flounder Platichthys stellatus 1

Pacific herring Clupea pallasi 1

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Coho salmon - juvenile Oncorhynchus kisutch 9
70

Appendix 1. Continued.

Haul #: 140 Latitude: 46.665 N Longitude: 124.179 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/25/1999 8:25:00 PM Tow time (minutes): 25 Tow distance (km): 2.67

Speed (km/h): 6.4 Tow direction (degrees): 169 Total caught: 22

Common name Scientific name Number caught

California market squid Loligo opalescens 9

Chinook salmon - 0 age Oncorhynchus tshawytscha 5

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Coho salmon - juvenile Oncorhynchus kisutch 1

Pacific sand lance Ammodytes hexapterus 4

Wolf-eel Anarrhichthys ocellatus 1

Haul #: 141 Latitude: 46.664 N Longitude: 124.292 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/25/1999 10:10:00 PM Tow time (minutes): 30 Tow distance (km): 2.74

Speed (km/h): 5.5 Tow direction (degrees): 176 Total caught: 76

Common name Scientific name Number caught

Jack mackerel Trachurus symmetricus 38

Spiny dogfish Squalus acanthias 2

Pacific herring Clupea pallasi 3

Chub mackerel Scomber japonicus 1

California market squid Loligo opalescens 6

Coho salmon - adult Oncorhynchus kisutch 1

Pacific sardine Sardinops sagax 25

Haul #: 142 Latitude: 46.659 N Longitude: 124.404 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/25/1999 11:51:00 PM Tow time (minutes): 30 Tow distance (km): 3.22

Speed (km/h): 6.4 Tow direction (degrees): 185 Total caught: 210

Common name Scientific name Number caught

Pacific hake Merluccius productus 1

Spiny dogfish Squalus acanthias 2

Soupfin shark Galeorhinus zyopterus 2

Pacific herring Clupea pallasi 2

Jack mackerel Trachurus symmetricus 97

Chub mackerel Scomber japonicus 22

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 13

Pacific sardine Sardinops sagax 70
71

Appendix 1. Continued.

Haul #: 143 Latitude: 46.660 N Longitude: 124.510 W

Net type: nordic 264 rope trawl Door type: 3 M foam filled Codend liner:

Start date/time: 06/26/1999 1:41:00 AM Tow time (minutes): 29 Tow distance (km): 3.16

Speed (km/h): 6.5 Tow direction (degrees): 183 Total caught: 317

Common name Scientific name Number caught

American shad Alosa sapidissima 5

Pacific herring Clupea pallasi 110

Spiny dogfish Squalus acanthias 1

Soupfin shark Galeorhinus zyopterus 3

Pacific sardine Sardinops sagax 113

Pacific hake Merluccius productus 39

Jack mackerel Trachurus symmetricus 23

Blue shark Prionace glauca 1

Chub mackerel Scomber japonicus 22

Haul #: 144 Latitude: 46.661 N Longitude: 124.610 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/26/1999 3:20:00 AM Tow time (minutes): 30 Tow distance (km): 3.22

Speed (km/h): 6.4 Tow direction (degrees): 180 Total caught: 123

Common name Scientific name Number caught

Pacific sardine Sardinops sagax 39

American shad Alosa sapidissima 3

Chub mackerel Scomber japonicus 7

Jack mackerel Trachurus symmetricus 45

Pacific herring Clupea pallasi 29

Haul #: 145 Latitude: 46.660 N Longitude: 124.785 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/26/1999 5:10:00 AM Tow time (minutes): 39 Tow distance (km): 3.34

Speed (km/h): 5.1 Tow direction (degrees): 181 Total caught: 16

Common name Scientific name Number caught

Unidentified bony fish Osteichthyes 4

Black rockfish Sebastes melanops 8

Pacific sardine Sardinops sagax 4
72

Appendix 1. Continued.

Haul #: 146 Latitude: 46.156 N Longitude: 124.571 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/26/1999 8:15:00 PM Tow time (minutes): 29 Tow distance (km): 3.28

Speed (km/h): 6.8 Tow direction (degrees): 183 Total caught: 259

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 10

Coho salmon - juvenile Oncorhynchus kisutch 2

Jack mackerel Trachurus symmetricus 247

Haul #: 147 Latitude: 46.158 N Longitude: 124.459 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/26/1999 10:10:00 PM Tow time (minutes): 30 Tow distance (km): 2.99

Speed (km/h): 6.0 Tow direction (degrees): 204 Total caught: 349

Common name Scientific name Number caught

American shad Alosa sapidissima 8

Chub mackerel Scomber japonicus 50

Jack mackerel Trachurus symmetricus 208

Pacific hake Merluccius productus 12

Pacific herring Clupea pallasi 13

Pacific sardine Sardinops sagax 57

Spiny dogfish Squalus acanthias 1

Haul #: 148 Latitude: 46.161 N Longitude: 124.337 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/27/1999 12:15:00 AM Tow time (minutes): 30 Tow distance (km): 3.10

Speed (km/h): 6.2 Tow direction (degrees): 202 Total caught: 68

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 3

Spiny dogfish Squalus acanthias 1

Pacific hake Merluccius productus 1

Pacific sardine Sardinops sagax 63

Haul #: 149 Latitude: 46.156 N Longitude: 124.220 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/27/1999 2:22:00 AM Tow time (minutes): 30 Tow distance (km): 3.07

Speed (km/h): 6.1 Tow direction (degrees): 198 Total caught: 141

Common name Scientific name Number caught

American shad Alosa sapidissima 3

Eulachon Thaleichthys pacificus 2

Pacific herring Clupea pallasi 2

Pacific sardine Sardinops sagax 134
73

Appendix 1. Continued.

Haul #: 150 Latitude: 46.158 N Longitude: 124.156 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/27/1999 4:10:00 AM Tow time (minutes): 30 Tow distance (km): 3.10

Speed (km/h): 6.2 Tow direction (degrees): 188 Total caught: 16

Common name Scientific name Number caught

Wolf-eel Anarrhichthys ocellatus 1

California market squid Loligo opalescens 7

Night smelt Spirinchus starksi 1

Pacific herring Clupea pallasi 1

Pacific sardine Sardinops sagax 6

Haul #: 151 Latitude: 46.160 N Longitude: 124.072 W

Net type: nordic 264 rope trawl Door type: foam filled - net Codend liner:

Start date/time: 06/27/1999 5:51:00 AM Tow time (minutes): 30 Tow distance (km): 3.01

Speed (km/h): 6.0 Tow direction (degrees): 177 Total caught: 6

Common name Scientific name Number caught

Wolf-eel Anarrhichthys ocellatus 2

Pacific herring Clupea pallasi 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Coho salmon - juvenile Oncorhynchus kisutch 1

Night smelt Spirinchus starksi 1

Haul #: 152 Latitude: 46.675 N Longitude: 124.180 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/06/1999 8:25:00 PM Tow time (minutes): 31 Tow distance (km): 3.04

Speed (km/h): 5.9 Tow direction (degrees): 165 Total caught: 404

Common name Scientific name Number caught

Coho salmon - juvenile Oncorhynchus kisutch 1

Wolf-eel Anarrhichthys ocellatus 1

Starry flounder Platichthys stellatus 1

Spiny dogfish Squalus acanthias 2

Northern anchovy Engraulis mordax 88

Chinook salmon - yearling Oncorhynchus tshawytscha 9

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

Chinook salmon - 0 age Oncorhynchus tshawytscha 279

American shad Alosa sapidissima 3

Pacific herring Clupea pallasi 18
74

Appendix 1. Continued.

Haul #: 153 Latitude: 46.658 N Longitude: 124.293 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/06/1999 10:20:00 PM Tow time (minutes): 30 Tow distance (km): 3.18

Speed (km/h): 6.4 Tow direction (degrees): 181 Total caught: 159

Common name Scientific name Number caught

Pacific hake Merluccius productus 1

Pacific sardine Sardinops sagax 76

Wolf-eel Anarrhichthys ocellatus 1

Spiny dogfish Squalus acanthias 2

Pacific herring Clupea pallasi 1

Northern anchovy Engraulis mordax 6

Eulachon Thaleichthys pacificus 8

Pacific sanddab Citharichthys sordidus 64

Haul #: 154 Latitude: 46.658 N Longitude: 124.397 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 12:04:00 AM Tow time (minutes): 30 Tow distance (km): 3.05

Speed (km/h): 6.1 Tow direction (degrees): 168 Total caught: 17

Common name Scientific name Number caught

Rex sole Errex zachirus 1

Eulachon Thaleichthys pacificus 4

Jack mackerel Trachurus symmetricus 1

Pacific hake Merluccius productus 8

Pacific herring Clupea pallasi 1

Pacific sardine Sardinops sagax 2

Haul #: 155 Latitude: 46.656 N Longitude: 124.507 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 2:00:00 AM Tow time (minutes): 30 Tow distance (km): 3.61

Speed (km/h): 7.2 Tow direction (degrees): 172 Total caught: 820

Common name Scientific name Number caught

Pacific herring Clupea pallasi 8

Soupfin shark Galeorhinus zyopterus 1

River lamprey Lampetra ayresii 1

Pacific sardine Sardinops sagax 529

Pacific lamprey Lampetra tridentata 1

Jack mackerel Trachurus symmetricus 175

Eulachon Thaleichthys pacificus 1

American shad Alosa sapidissima 1

Chub mackerel Scomber japonicus 89

Pacific hake Merluccius productus 14
75

Appendix 1. Continued.

Haul #: 156 Latitude: 46.656 N Longitude: 124.597 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 3:58:00 AM Tow time (minutes): 30 Tow distance (km): 3.15

Speed (km/h): 6.3 Tow direction (degrees): 174 Total caught: 22

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 2

Jack mackerel Trachurus symmetricus 4

Pacific sardine Sardinops sagax 16

Haul #: 157 Latitude: 46.656 N Longitude: 124.780 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 6:14:00 AM Tow time (minutes): 30 Tow distance (km): 3.22

Speed (km/h): 6.4 Tow direction (degrees): 178 Total caught: 45

Common name Scientific name Number caught

Rockfishes Sebastes 15

Thresher shark Alopias vulpinus 1

Blue shark Prionace glauca 2

Black rockfish Sebastes melanops 27

Haul #: 158 Latitude: 46.164 N Longitude: 124.569 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 8:17:00 PM Tow time (minutes): 30 Tow distance (km): 3.41

Speed (km/h): 6.8 Tow direction (degrees): 178 Total caught: 38

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 1

Coho salmon - juvenile Oncorhynchus kisutch 1

Jack mackerel Trachurus symmetricus 17

Pacific sardine Sardinops sagax 16

Sablefish Anoplopoma fimbria 1

Wolf-eel Anarrhichthys ocellatus 1

Blue shark Prionace glauca 1

Haul #: 159 Latitude: 46.159 N Longitude: 124.452 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 10:01:00 PM Tow time (minutes): 30 Tow distance (km): 3.49

Speed (km/h): 7.0 Tow direction (degrees): 183 Total caught: 40

Common name Scientific name Number caught

Pacific hake Merluccius productus 39

Wolf-eel Anarrhichthys ocellatus 1
76

Appendix 1. Continued.

Haul #: 160 Latitude: 46.162 N Longitude: 124.344 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/07/1999 11:51:00 PM Tow time (minutes): 30 Tow distance (km): 3.39

Speed (km/h): 6.8 Tow direction (degrees): 201 Total caught: 7

Common name Scientific name Number caught

American shad Alosa sapidissima 3

Spiny dogfish Squalus acanthias 2

Pacific herring Clupea pallasi 1

Pacific hake Merluccius productus 1

Haul #: 161 Latitude: 46.159 N Longitude: 124.225 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/08/1999 2:04:00 AM Tow time (minutes): 30 Tow distance (km): 2.95

Speed (km/h): 5.9 Tow direction (degrees): 193 Total caught: 2

Common name Scientific name Number caught

Pacific tomcod Microgadus proximus 2

Haul #: 162 Latitude: 46.160 N Longitude: 124.156 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/08/1999 3:40:00 AM Tow time (minutes): 30 Tow distance (km): 3.23

Speed (km/h): 6.5 Tow direction (degrees): 150 Total caught: 4

Common name Scientific name Number caught

Night smelt Spirinchus starksi 1

Pacific herring Clupea pallasi 1

Pacific staghorn sculpin Leptocottus armatus 2

Haul #: 163 Latitude: 46.178 N Longitude: 124.075 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/08/1999 5:13:00 AM Tow time (minutes): 30 Tow distance (km): 3.01

Speed (km/h): 6.0 Tow direction (degrees): 343 Total caught: 10

Common name Scientific name Number caught

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Whitebait smelt Allosmerus elongatus 1

Smelts Osmeridae 0

Chinook salmon - 0 age Oncorhynchus tshawytscha 5

Big skate Raja binoculata 1

Starry flounder Platichthys stellatus 1
77

Appendix 1. Continued.

Haul #: 164 Latitude: 46.653 N Longitude: 124.175 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/13/1999 8:28:00 PM Tow time (minutes): 33 Tow distance (km): 3.32

Speed (km/h): 6.0 Tow direction (degrees): 163 Total caught: 1157

Common name Scientific name Number caught

Black rockfish Sebastes melanops 5

Northern anchovy Engraulis mordax 4

Spiny dogfish Squalus acanthias 12

Rex sole Errex zachirus 1

Plainfin midshipman Porichthys notatus 28

Pacific tomcod Microgadus proximus 966

Pacific herring Clupea pallasi 88

Eulachon Thaleichthys pacificus 1

English sole Pleuronectes vetulus 8

Butter sole Pleuronectes isolepis 9

Starry flounder Platichthys stellatus 19

Big skate Raja binoculata 12

American shad Alosa sapidissima 1

Chinook salmon - 0 age Oncorhynchus tshawytscha 3

Haul #: 165 Latitude: 46.658 N Longitude: 124.290 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/13/1999 10:32:00 PM Tow time (minutes): 31 Tow distance (km): 3.44

Speed (km/h): 6.7 Tow direction (degrees): 171 Total caught: 440

Common name Scientific name Number caught

Pacific herring Clupea pallasi 78

Pacific sardine Sardinops sagax 85

Spiny dogfish Squalus acanthias 65

Pacific sanddab Citharichthys sordidus 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 65

Chinook salmon - 0 age Oncorhynchus tshawytscha 2

Northern anchovy Engraulis mordax 143
78

Appendix 1. Continued.

Haul #: 166 Latitude: 46.653 N Longitude: 124.400 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/14/1999 12:30:00 AM Tow time (minutes): 30 Tow distance (km): 3.69

Speed (km/h): 7.4 Tow direction (degrees): 181 Total caught: 129

Common name Scientific name Number caught

Pacific sardine Sardinops sagax 80

Spiny dogfish Squalus acanthias 4

Pacific herring Clupea pallasi 6

Pacific hake Merluccius productus 8

Jack mackerel Trachurus symmetricus 9

Chub mackerel Scomber japonicus 1

Chinook salmon - ocean fish Oncorhynchus tshawytscha 2

American shad Alosa sapidissima 19

Haul #: 167 Latitude: 46.639 N Longitude: 124.499 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/14/1999 2:51:00 AM Tow time (minutes): 31 Tow distance (km): 3.46

Speed (km/h): 6.7 Tow direction (degrees): 157 Total caught: 64

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 3

Jack mackerel Trachurus symmetricus 6

Pacific hake Merluccius productus 6

Pacific herring Clupea pallasi 7

Pacific sardine Sardinops sagax 33

American shad Alosa sapidissima 9

Haul #: 168 Latitude: 46.131 N Longitude: 124.546 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/14/1999 8:25:00 PM Tow time (minutes): 31 Tow distance (km): 2.14

Speed (km/h): 4.2 Tow direction (degrees): 333 Total caught: 25

Common name Scientific name Number caught

Blue shark Prionace glauca 1

California market squid Loligo opalescens 3

Pacific hake Merluccius productus 21
79

Appendix 1. Continued.

Haul #: 169 Latitude: 46.159 N Longitude: 124.453 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/14/1999 10:02:00 PM Tow time (minutes): 29 Tow distance (km): 3.32

Speed (km/h): 6.9 Tow direction (degrees): 178 Total caught: 245

Common name Scientific name Number caught

Pacific hake Merluccius productus 14

Pacific sardine Sardinops sagax 150

Chub mackerel Scomber japonicus 62

Jack mackerel Trachurus symmetricus 19

Haul #: 170 Latitude: 46.164 N Longitude: 124.341 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/14/1999 11:53:00 PM Tow time (minutes): 30 Tow distance (km): 3.06

Speed (km/h): 6.1 Tow direction (degrees): 191 Total caught: 5

Common name Scientific name Number caught

Pacific hake Merluccius productus 2

Pacific sardine Sardinops sagax 2

California market squid Loligo opalescens 1

Haul #: 171 Latitude: 46.159 N Longitude: 124.216 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/15/1999 1:52:00 AM Tow time (minutes): 30 Tow distance (km): 3.06

Speed (km/h): 6.1 Tow direction (degrees): 209 Total caught: 110

Common name Scientific name Number caught

American shad Alosa sapidissima 1

Pacific hake Merluccius productus 54

Pacific lamprey Lampetra tridentata 1

Pacific sanddab Citharichthys sordidus 51

Pacific staghorn sculpin Leptocottus armatus 1

Whitebait smelt Allosmerus elongatus 1

Wolf-eel Anarrhichthys ocellatus 1
80

Appendix 1. Continued.

Haul #: 172 Latitude: 46.138 N Longitude: 124.154 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/15/1999 3:13:00 AM Tow time (minutes): 30 Tow distance (km): 2.86

Speed (km/h): 5.7 Tow direction (degrees): 3 Total caught: 86

Common name Scientific name Number caught

Northern anchovy Engraulis mordax 1

Whitebait smelt Allosmerus elongatus 26

Pacific sanddab Citharichthys sordidus 19

American shad Alosa sapidissima 32

California market squid Loligo opalescens 2

Pacific hake Merluccius productus 1

Pacific herring Clupea pallasi 5

Haul #: 173 Latitude: 46.177 N Longitude: 124.075 W

Net type: nordic 264 rope trawl Door type: 3 m foam filled Codend liner:

Start date/time: 07/15/1999 4:34:00 AM Tow time (minutes): 32 Tow distance (km): 3.23

Speed (km/h): 6.1 Tow direction (degrees): 176 Total caught: 42

Common name Scientific name Number caught

Whitebait smelt Allosmerus elongatus 6

American shad Alosa sapidissima 4

Pacific herring Clupea pallasi 6

Pacific tomcod Microgadus proximus 26

Haul #: 174 Latitude: 46.675 N Longitude: 124.184 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/27/1999 8:21:00 PM Tow time (minutes): 30 Tow distance (km): 2.91

Speed (km/h): 5.8 Tow direction (degrees): 177 Total caught: 93

Common name Scientific name Number caught

Starry flounder Platichthys stellatus 45

Spiny dogfish Squalus acanthias 13

Pacific herring Clupea pallasi 34

Pacific tomcod Microgadus proximus 1
81

Appendix 1. Continued.

Haul #: 175 Latitude: 46.644 N Longitude: 124.304 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/27/1999 10:08:00 PM Tow time (minutes): 30 Tow distance (km): 2.75

Speed (km/h): 5.5 Tow direction (degrees): 4 Total caught: 5466

Common name Scientific name Number caught

Chinook salmon - ocean fish Oncorhynchus tshawytscha 1

Spiny dogfish Squalus acanthias 5

Pacific sardine Sardinops sagax 5065

Pacific sanddab Citharichthys sordidus 13

Pacific hake Merluccius productus 331

Chub mackerel Scomber japonicus 8

Jack mackerel Trachurus symmetricus 22

Pacific herring Clupea pallasi 21

Haul #: 176 Latitude: 46.662 N Longitude: 124.410 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 Tow time (minutes): 31 Tow distance (km): 3.51

Speed (km/h): 6.8 Tow direction (degrees): 178 Total caught: 543

Common name Scientific name Number caught

Sablefish Anoplopoma fimbria 1

Spiny dogfish Squalus acanthias 2

Pacific sardine Sardinops sagax 123

Pacific herring Clupea pallasi 197

Jack mackerel Trachurus symmetricus 176

Chub mackerel Scomber japonicus 34

California market squid Loligo opalescens 1

American shad Alosa sapidissima 2

Pacific hake Merluccius productus 6

Yellowtail rockfish Sebastes flavidus 1
82

Appendix 1. Continued.

Haul #: 177 Latitude: 46.636 N Longitude: 124.520 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 1:43:00 AM Tow time (minutes): 30 Tow distance (km): 2.40

Speed (km/h): 4.8 Tow direction (degrees): 1 Total caught: 241

Common name Scientific name Number caught

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

Spiny dogfish Squalus acanthias 1

Pacific sardine Sardinops sagax 37

Pacific herring Clupea pallasi 93

Pacific hake Merluccius productus 11

Chub mackerel Scomber japonicus 23

American shad Alosa sapidissima 1

Jack mackerel Trachurus symmetricus 74

Haul #: 178 Latitude: 46.674 N Longitude: 124.607 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 3:26:00 AM Tow time (minutes): 32 Tow distance (km): 3.22

Speed (km/h): 6.0 Tow direction (degrees): 181 Total caught: 1073

Common name Scientific name Number caught

Eulachon Thaleichthys pacificus 1

Pacific herring Clupea pallasi 442

Pacific sardine Sardinops sagax 392

Chub mackerel Scomber japonicus 58

Pacific hake Merluccius productus 72

Jack mackerel Trachurus symmetricus 108

Haul #: 179 Latitude: 46.673 N Longitude: 124.793 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 5:40:00 AM Tow time (minutes): 31 Tow distance (km): 3.28

Speed (km/h): 6.4 Tow direction (degrees): 174 Total caught: 103

Common name Scientific name Number caught

Chinook salmon - 0 age Oncorhynchus tshawytscha 1

Chub mackerel Scomber japonicus 1

Chum salmon - juvenile Oncorhynchus keta 1

Jack mackerel Trachurus symmetricus 7

Pacific herring Clupea pallasi 75

Pacific sardine Sardinops sagax 18
83

Appendix 1. Continued.

Haul #: 180 Latitude: 46.162 N Longitude: 124.562 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 8:24:00 PM Tow time (minutes): 31 Tow distance (km): 3.23

Speed (km/h): 6.3 Tow direction (degrees): 178 Total caught: 320

Common name Scientific name Number caught

Chub mackerel Scomber japonicus 7

Jack mackerel Trachurus symmetricus 313

Haul #: 181 Latitude: 46.146 N Longitude: 124.443 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 10:04:00 PM Tow time (minutes): 30 Tow distance (km): 2.67

Speed (km/h): 5.3 Tow direction (degrees): 6 Total caught: 539

Common name Scientific name Number caught

Pacific herring Clupea pallasi 1

Pacific sardine Sardinops sagax 438

Pacific hake Merluccius productus 1

American shad Alosa sapidissima 1

Chub mackerel Scomber japonicus 26

Jack mackerel Trachurus symmetricus 72

Haul #: 182 Latitude: 46.171 N Longitude: 124.334 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/28/1999 11:40:00 PM Tow time (minutes): 30 Tow distance (km): 2.79

Speed (km/h): 5.6 Tow direction (degrees): 201 Total caught: 2341

Common name Scientific name Number caught

Pacific hake Merluccius productus 7

American shad Alosa sapidissima 4

Pacific herring Clupea pallasi 8

Jack mackerel Trachurus symmetricus 30

Chub mackerel Scomber japonicus 43

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Chinook salmon - ocean fish Oncorhynchus tshawytscha 3

Pacific sardine Sardinops sagax 2244
84

Appendix 1. Continued.

Haul #: 183 Latitude: 46.160 N Longitude: 124.206 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/29/1999 1:57:00 AM Tow time (minutes): 31 Tow distance (km): 2.83

Speed (km/h): 5.5 Tow direction (degrees): 175 Total caught: 400

Common name Scientific name Number caught

Pacific sanddab Citharichthys sordidus 21

Whitebait smelt Allosmerus elongatus 1

Black rockfish Sebastes melanops 1

Starry flounder Platichthys stellatus 1

Wolf-eel Anarrhichthys ocellatus 1

Spiny dogfish Squalus acanthias 1

Pacific sardine Sardinops sagax 71

Pacific herring Clupea pallasi 280

Pacific hake Merluccius productus 5

Eulachon Thaleichthys pacificus 3

California market squid Loligo opalescens 1

American shad Alosa sapidissima 11

Chinook salmon - yearling Oncorhynchus tshawytscha 1

Pacific lamprey Lampetra tridentata 2

Haul #: 184 Latitude: 46.151 N Longitude: 124.151 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/29/1999 3:18:00 AM Tow time (minutes): 30 Tow distance (km): 2.66

Speed (km/h): 5.3 Tow direction (degrees): 347 Total caught: 344

Common name Scientific name Number caught

Pacific sanddab Citharichthys sordidus 10

Pacific sardine Sardinops sagax 326

Pacific herring Clupea pallasi 6

Chinook salmon - yearling Oncorhynchus tshawytscha 1

American shad Alosa sapidissima 1
85

Appendix 1. Continued.

Haul #: 185 Latitude: 46.175 N Longitude: 124.065 W

Net type: nordic 264 rope trawl Door type: foam filled Codend liner:

Start date/time: 07/29/1999 5:04:00 AM Tow time (minutes): 34 Tow distance (km): 3.18

Speed (km/h): 5.6 Tow direction (degrees): 168 Total caught: 73

Common name Scientific name Number caught

Starry flounder Platichthys stellatus 1

California market squid Loligo opalescens 2

Chinook salmon - 0 age Oncorhynchus tshawytscha 2

Chinook salmon - yearling Oncorhynchus tshawytscha 2

Coho salmon - juvenile Oncorhynchus kisutch 1

Pacific herring Clupea pallasi 55

Pacific sardine Sardinops sagax 6

Pacific tomcod Microgadus proximus 1

Spiny dogfish Squalus acanthias 1

American shad Alosa sapidissima 2
86
87

APPENDIX 2:

TEMPERATURE AND SALINITY PROFILES
88
89

Appendix 2. Temperature and salinity profiles along transects north (Willapa Bay) and south

 (Columbia River) off the Columbia River while surface trawling1999.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 1

13-15 April 1999

 8.5 8.6 8.7 8.8 8.9 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10.0

Temperature (Celcius)
90

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 2

22-24 April 1999

 8.0 8.2 8.4 8.6 8.8 9.0 9.2 9.4 9.6 9.8 10.0 10.2 10.4 10.6 10.8 11.0 11.2 11.4

Temperature (Celcius)
91

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 3

4-6 May 1999

 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0

Temperature (Celcius)
92

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 4

13-15 May 1999

 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0

Temperature (Celcius)
93

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 5

27-29 May 1999

 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5

Temperature (Celcius)
94

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 6

12-14 June 1999

 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5

Temperature (Celcius)
95

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 7

25-27 June 1999

 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5

Temperature (Celcius)
96

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 8

6-8 July 1999

 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5

Temperature (Celcius)
97

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 9

13-15 July 1999

 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0

Temperature (Celcius)
98

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 10

27-29 July 1999

 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5

Temperature (Celcius)
99

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 1

13-15 April 1999

 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0

Salinity (ppt)
100

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 2

22-24 April 1999

 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
101

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 3

4-6 May 1999

 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
102

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 4

13-15 May 1999

 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
103

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 5

27-29 May 1999

 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
104

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 6

12-14 June 1999

 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
105

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 7

25-27 June 1999

 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
106

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 8

6-8 July 1999

 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
107

Appendix 2. Continued.

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

Columbia River Transect

Cruise 9

13-15 July 1999

 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)
108

Appendix 2. Continued.

Cruise 10

27-29 July 1999

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Willapa Bay Transect

30 25 20 15 10 5

Distance Offshore (nm)

50

40

30

20

10

Depth (m)

Columbia River Transect

 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

Salinity (ppt)