Data summary

Published

January 29, 2025

This documents data streams for use in the Northern Yellowtail Rockfish stock assessment. These data are NOT final and have NOT been fully QA/QC’ed! They are here for communication with the STAT and other collaborators. It is not official communication of the National Oceanic and Atmospheric Administration or the United States Department of Commerce.

Landings

Commercial landings

Some summary figures:

Table of commercial landings by state, 1981 onward.

YEAR WA Foreign OR CA
1889 0.1 0 0.0 0.0
1890 0.1 0 0.0 0.0
1891 0.2 0 0.0 0.0
1892 0.3 0 2.1 0.0
1893 0.0 0 2.1 0.0
1894 0.0 0 2.1 0.0
1895 0.0 0 0.5 0.0
1896 0.0 0 0.1 0.0
1897 0.0 0 0.1 0.0
1898 0.0 0 0.1 0.0
1899 0.0 0 0.1 0.0
1900 0.0 0 0.2 0.0
1901 0.0 0 0.2 0.0
1902 0.0 0 0.3 0.0
1903 0.0 0 0.3 0.0
1904 0.3 0 0.4 0.0
1905 0.0 0 0.4 0.0
1906 0.0 0 0.5 0.0
1907 0.0 0 0.5 0.0
1908 0.1 0 0.6 0.0
1909 0.0 0 0.6 0.0
1910 0.0 0 0.7 0.0
1911 0.0 0 0.7 0.0
1912 0.0 0 0.8 0.0
1913 0.0 0 0.8 0.0
1914 0.0 0 0.9 0.0
1915 0.1 0 0.9 0.0
1916 0.0 0 1.0 2.5
1917 0.0 0 1.1 5.0
1918 2.6 0 1.1 11.6
1919 0.9 0 1.2 2.7
1920 0.7 0 1.2 3.6
1921 0.7 0 1.3 5.4
1922 0.3 0 1.3 4.1
1923 0.4 0 1.4 1.3
1924 1.1 0 1.4 3.6
1925 1.4 0 1.5 11.8
1926 2.4 0 1.5 11.6
1927 3.2 0 1.6 22.1
1928 2.8 0 2.6 19.0
1929 2.2 0 9.1 20.9
1930 3.1 0 12.5 30.3
1931 2.9 0 7.1 43.8
1932 1.1 0 1.8 33.0
1933 1.2 0 2.9 29.1
1934 3.7 0 3.1 24.9
1935 7.5 0 2.0 41.6
1936 3.6 0 10.1 37.4
1937 2.4 0 23.0 30.5
1938 5.4 0 22.9 39.6
1939 8.0 0 28.5 41.6
1940 11.6 0 119.0 19.7
1941 14.8 0 159.2 27.6
1942 19.6 0 282.7 22.6
1943 378.1 0 924.1 38.3
1944 616.4 0 1572.6 194.7
1945 1570.7 0 2420.2 470.0
1946 705.1 0 1507.1 477.7
1947 329.6 0 916.8 109.9
1948 418.1 0 627.0 200.7
1949 3.5 0 541.1 79.8
1950 572.7 0 581.1 43.1
1951 627.6 0 512.9 108.2
1952 985.4 0 537.3 81.4
1953 387.1 0 444.6 56.4
1954 559.3 0 530.7 74.3
1955 568.3 0 568.1 18.4
1956 565.7 0 755.2 20.9
1957 344.2 0 996.7 34.2
1958 627.9 0 752.0 49.9
1959 620.2 0 824.6 29.2
1960 692.2 0 1075.8 18.8
1961 688.1 0 977.5 14.1
1962 1106.6 0 1131.4 12.0
1963 851.7 0 960.8 32.7
1964 791.5 0 687.7 38.0
1965 725.3 0 675.1 32.1
1966 265.6 2845 818.9 15.5
1967 484.7 1956 835.2 30.0
1968 915.4 1187 981.8 30.3
1969 1776.8 786 1378.6 58.9
1970 879.2 1031 521.8 60.7
1971 760.8 434 674.2 92.2
1972 1080.2 716 1113.7 99.8
1973 1580.0 770 1071.8 85.8
1974 1073.8 654 780.2 109.9
1975 607.5 222 707.5 86.9
1976 2471.4 235 1338.8 111.6
1977 4289.6 0 1513.1 111.1
1978 5729.5 0 2221.5 297.2
1979 5140.9 0 2061.9 67.5
1980 3936.4 0 3048.5 37.5
1981 10643.5 0 3633.5 94.4
1982 11943.8 0 2960.2 331.4
1983 11569.4 0 3857.1 105.3
1984 5084.1 0 2071.7 357.7
1985 3046.3 0 1613.9 120.2
1986 4384.7 0 2163.1 268.9
1987 3989.1 0 2484.0 141.6
1988 6538.5 0 2613.8 144.7
1989 3663.1 0 2551.0 354.0
1990 3467.9 0 2147.3 466.4
1991 2398.7 0 2066.7 405.8
1992 2850.4 0 3998.1 231.9
1993 4337.1 0 3090.7 102.3
1994 3828.4 0 3215.4 104.6
1995 2965.6 0 3113.7 115.9
1996 2910.0 0 3599.3 153.2
1997 953.7 0 1271.2 89.6
1998 1235.2 0 1744.2 132.6
1999 1127.9 0 1624.2 60.9
2000 1756.1 0 2012.2 21.0
2001 1512.7 0 1101.8 41.2
2002 1319.8 0 350.2 16.0
2003 716.3 0 55.2 1.1
2004 934.6 0 97.8 3.7
2005 1302.0 0 103.0 0.8
2006 560.6 0 77.4 0.8
2007 440.6 0 57.0 1.4
2008 524.8 0 14.0 1.7
2009 1012.5 0 32.4 0.6
2010 1329.3 0 88.9 0.2
2011 1202.2 0 594.6 0.3
2012 1847.5 0 593.7 0.3
2013 1079.6 0 577.6 0.8
2014 882.7 0 927.9 0.7
2015 1056.7 0 1310.0 4.3
2016 749.8 0 988.8 1.3
2017 789.7 0 1908.6 4.0
2018 1015.4 0 2170.4 11.0
2019 1064.2 0 2214.1 11.2
2020 1128.7 0 2264.3 14.0
2021 983.8 0 1745.7 28.1
2022 917.8 0 2020.9 19.2
2023 893.5 0 1999.5 20.7

Note that the 2017 assessment did not include foreign landings. This foreign reconstruction is from Rogers (2003).

WDFW has alerted the STAT these do not include all tribal catches in recent years. 1981-2000 are from the UPOP/URCK reconstruction, summing catches for YTRK and YTR1. 2001 onward comes from PacFIN

Oregon landings were provided directly to the STAT from ODFW and come from PacFIN and a UPOP/URCK reconstruction.

California landings are for catch landed into Del Norte and Humboldt counties only. Data sources are:

  • Ralston et al. (2010) + supplementary catch from OR waters: 1916 - 1968
  • CALCOM: 1969 - 1980
  • PacFIN: 1981 - present

In the Ralston et al. (2010) reconstruction, the northernmost region (region 2) includes Crescent City, Eureka AND Fort Bragg port area groups. Catch in the Crescent City and Eureka port area groups (i.e., Del Norte and Humboldt counties) is estimated based on the fraction of catch in Crescent City and Eureka divided by catch in all of region 2 during the first five years of CALCOM. The vast majority of the catch is in the two northern port areas (96%). All supplementary catches in the Ralston reconstruction caught off the coast of Oregon, but landed into California are included.

At-Sea landings

YEAR catch_mt
1976 29.5
1977 7.4
1978 75.4
1979 82.0
1980 255.4
1981 152.6
1982 551.2
1983 548.4
1984 312.0
1985 174.2
1986 560.1
1987 541.4
1988 423.4
1989 184.6
1990 295.1
1991 480.0
1992 694.8
1993 273.4
1994 560.4
1995 646.8
1996 746.2
1997 396.3
1998 438.1
1999 1198.6
2000 635.3
2001 213.4
2002 189.9
2003 36.6
2004 47.6
2005 112.2
2006 108.7
2007 78.7
2008 175.0
2009 176.2
2010 150.1
2011 101.2
2012 43.0
2013 269.0
2014 42.0
2015 86.4
2016 62.3
2017 278.1
2018 229.9
2019 316.9
2020 166.9
2021 82.4
2022 27.4
2023 267.6

Recreational landings

YEAR OR (mt) WA (mt) WA (num) CA (mt)
1928 0.0 0.0 0 0.1
1929 0.0 0.0 0 0.2
1930 0.0 0.0 0 0.2
1931 0.0 0.0 0 0.3
1932 0.0 0.0 0 0.3
1933 0.0 0.0 0 0.4
1934 0.0 0.0 0 0.5
1935 0.0 0.0 0 0.5
1936 0.0 0.0 0 0.6
1937 0.0 0.0 0 0.7
1938 0.0 0.0 0 0.7
1939 0.0 0.0 0 0.6
1940 0.0 0.0 0 0.9
1941 0.0 0.0 0 0.8
1942 0.0 0.0 0 0.4
1943 0.0 0.0 0 0.4
1944 0.0 0.0 0 0.3
1945 0.0 0.0 0 0.5
1946 0.0 0.0 0 0.8
1947 0.0 0.0 0 0.6
1948 0.0 0.0 0 1.2
1949 0.0 0.0 0 1.6
1950 0.0 0.0 0 2.0
1951 0.0 0.0 0 2.2
1952 0.0 0.0 0 2.0
1953 0.0 0.0 0 1.7
1954 0.0 0.0 0 2.1
1955 0.0 0.0 0 2.5
1956 0.0 0.0 0 2.8
1957 0.0 0.0 0 2.4
1958 0.0 0.0 0 4.1
1959 0.0 0.0 0 3.8
1960 0.0 0.0 0 2.8
1961 0.0 0.0 0 2.1
1962 0.0 0.0 0 2.4
1963 0.0 0.0 0 1.7
1964 0.0 0.0 0 1.3
1965 0.0 0.0 0 2.1
1966 0.0 0.0 0 2.3
1967 0.0 36.2 38119 2.3
1968 0.0 2.1 2235 2.5
1969 0.0 2.1 2168 3.1
1970 0.0 12.8 13510 3.5
1971 0.0 11.5 0 2.7
1972 0.0 12.0 12653 3.6
1973 0.0 19.0 20014 4.7
1974 0.0 14.4 0 5.0
1975 0.0 11.2 11813 5.0
1976 0.0 15.4 16248 6.0
1977 0.0 7.2 7552 5.3
1978 0.0 11.9 12544 4.8
1979 18.6 3.9 4128 5.1
1980 22.7 2.8 2931 4.3
1981 15.7 3.9 4075 9.2
1982 24.7 1.7 1747 27.4
1983 0.0 2.7 2803 13.8
1984 28.3 3.3 3476 6.6
1985 7.5 4.8 5022 5.9
1986 27.7 8.7 9185 4.8
1987 24.8 7.7 8141 5.8
1988 12.5 6.9 7311 4.2
1989 9.5 6.3 6639 6.2
1990 16.3 15.1 0 4.3
1991 29.8 33.4 0 3.1
1992 32.1 35.2 0 2.0
1993 79.8 46.3 0 1.3
1994 22.7 20.2 0 0.7
1995 35.5 16.1 0 0.6
1996 20.8 22.0 0 1.6
1997 21.6 26.7 0 6.6
1998 31.2 44.3 0 1.8
1999 56.3 16.8 0 3.1
2000 20.6 19.1 0 2.1
2001 15.3 12.6 0 0.8
2002 19.6 3.5 0 0.4
2003 15.1 11.7 0 0.3
2004 11.3 18.2 0 0.2
2005 12.5 15.9 0 0.2
2006 8.3 10.2 0 0.2
2007 6.8 14.7 0 0.5
2008 5.6 14.4 0 0.2
2009 10.2 29.4 0 1.0
2010 8.3 43.2 0 0.3
2011 11.6 53.4 0 0.5
2012 13.8 18.8 0 0.7
2013 16.1 23.5 0 0.6
2014 11.4 42.7 0 0.3
2015 22.1 26.3 0 0.6
2016 7.7 36.7 0 0.2
2017 14.0 47.4 0 0.5
2018 35.6 38.2 0 1.0
2019 30.4 48.6 0 1.3
2020 38.4 60.1 0 0.6
2021 27.9 61.9 0 1.1
2022 51.7 68.9 0 1.2
2023 82.9 88.9 0 3.1

Method for converting historical WA catches from numbers to weight

We are planning to use WA (mt) for all years, but show WA (num) to compare with raw data.

From WA sport biodata, calculate average length of samples collected prior to 1990. This included 48 samples from 1979, 1981, and 1982. The next available samples are in 1995, so we did not use length data from samples in years shortly after the historical reconstruction applies.

Calculate average weight using the unsexed version of the weight-length relationship calculated from WCGBTS data.

Catches in 1971 and 1974 are not available, so are calculated as the average of the two previous and two subsequent years.

Method for CA MRFSS catches:

From Albin et al. (1993), which covers 1981-1986, calculate two ratios:

  1. Total catch in Del Norte/Humboldt / total catch in all counties
  2. Total catch in Del Norte/Humboldt / total catch in all counties except SLO

From CRFS data for 2005-2010, calculate total catch in Redwoods district / total catch in N. CA sub-region

From MRFSS data, calculate total catch by year in N. CA sub-region

For CA rec catch estimates for the assessment:

  • 1980-1989: Multiply total N. CA catch by Albin ratio (2)
  • 1993-2004: Multiply total N. CA catch by weighted average of Albin ratio (1) and CRFS ratio. Weights are inverse of time to last Albin year or first CRFS year.
  • 1990-1992: Interpolate between average of 1987-1989 and 1993-1995

In addition, Albin ratio (1) is used to calculate what fraction of N. CA catches from the Ralston recreational reconstruction are in the assessment area.

Comp Data

Commercial

Initial length sample sizes after running PacFIN.Utilities::cleanPacFIN():

  AGE_METHOD1 AGE_METHOD2 AGE_METHOD3 Age method for best age      n
1           B           B           B                       B   2346
2           B           B        <NA>                              1
3           B           B        <NA>                       B   4675
4           B        <NA>        <NA>                             32
5           B        <NA>        <NA>                       B 141982
6           L        <NA>        <NA>                       L      1
7           S        <NA>        <NA>                       S  17942
8           T        <NA>        <NA>                       T      2
9        <NA>        <NA>        <NA>                    <NA>  82197
year CA OR WA total
1968 0 0 1225 1225
1969 0 0 1852 1852
1970 0 0 981 981
1971 0 0 1087 1087
1972 0 0 1252 1252
1973 0 0 697 697
1974 0 0 350 350
1975 0 0 458 458
1976 0 0 2776 2776
1977 0 0 778 778
1978 132 0 1876 2008
1979 41 0 1599 1640
1980 74 0 3705 3779
1981 61 607 3900 4568
1982 184 1499 3496 5179
1983 278 199 2366 2843
1984 704 1098 3200 5002
1985 261 2104 3500 5865
1986 181 1156 2992 4329
1987 145 1891 2046 4082
1988 37 1670 1650 3357
1989 230 2055 1650 3935
1990 192 1802 1875 3869
1991 265 1296 1950 3511
1992 737 2490 1700 4927
1993 261 2022 1800 4083
1994 847 2641 3562 7050
1995 436 2242 3505 6183
1996 660 2259 3154 6073
1997 277 4092 2501 6870
1998 618 3235 2105 5958
1999 350 3578 2195 6123
2000 141 3005 2283 5429
2001 204 2832 2045 5081
2002 105 1538 1663 3306
2003 41 701 1629 2371
2004 64 1341 1783 3188
2005 67 980 1173 2220
2006 100 1251 968 2319
2007 106 1196 2515 3817
2008 41 585 1841 2467
2009 60 855 1450 2365
2010 2 1618 1614 3234
2011 72 1816 1415 3303
2012 131 1915 2231 4277
2013 203 1269 1275 2747
2014 174 1898 1309 3381
2015 196 2393 1760 4349
2016 199 3145 1587 4931
2017 383 3040 2470 5893
2018 359 2950 1651 4960
2019 334 2782 1146 4262
2020 168 1932 551 2651
2021 633 1815 1157 3605
2022 184 2443 1469 4096
2023 302 2145 1415 3862

Age sample sizes:

year CA OR WA total
1968 0 0 0 0
1969 0 0 0 0
1970 0 0 0 0
1971 0 0 0 0
1972 0 0 0 0
1973 0 0 0 0
1974 0 0 123 123
1975 0 0 305 305
1976 0 0 1281 1281
1977 0 0 296 296
1978 0 0 599 599
1979 0 0 1562 1562
1980 73 0 3628 3701
1981 61 593 3741 4395
1982 162 1381 3430 4973
1983 234 199 2350 2783
1984 685 1092 3192 4969
1985 260 1987 3498 5745
1986 164 946 2985 4095
1987 97 1891 2092 4080
1988 36 1670 1645 3351
1989 229 2053 1643 3925
1990 187 1792 1872 3851
1991 265 1289 1824 3378
1992 150 2424 1696 4270
1993 0 1981 1798 3779
1994 139 2637 1747 4523
1995 91 2203 1900 4194
1996 244 2161 1646 4051
1997 76 3735 1774 5585
1998 47 2263 2092 4402
1999 82 3383 2180 5645
2000 25 2863 2249 5137
2001 177 2749 2043 4969
2002 68 1511 1654 3233
2003 0 584 1623 2207
2004 32 1328 1754 3114
2005 66 892 1169 2127
2006 93 1222 749 2064
2007 0 475 1397 1872
2008 41 575 1077 1693
2009 4 638 940 1582
2010 2 1080 881 1963
2011 26 1005 811 1842
2012 28 1306 1279 2613
2013 12 1103 749 1864
2014 110 1828 713 2651
2015 56 2158 900 3114
2016 0 2201 1184 3385
2017 0 2465 1574 4039
2018 0 2081 1144 3225
2019 0 1810 1014 2824
2020 0 1414 497 1911
2021 0 1295 945 2240
2022 0 0 869 869
2023 0 0 816 816

Comparing midwater vs bottom trawl lengths and ages

The length and age distribution associated with the midwater trawl (MDT) code in PacFIN is is very similar to bottom trawl catch (everything else in the TWL gear group). Note that the sample sizes for ages in 2022-2024 are lower than other years, especially midwater in 2022 which only has 14 ages.

Recreational

VERY tentative length sample sizes. I anticipate this is biased high as I have done no filtering.

Year WA_RETAINED OR_RETAINED OR_RELEASED CA_RETAINED CA_RELEASED OR (MRFSS) CA (MRFSS) WA (MRFSS)
1980 0 0 0 0 0 0 12 224
1981 0 0 0 0 0 0 2 131
1982 0 0 0 0 0 0 20 61
1983 0 0 0 0 0 0 25 34
1984 0 0 0 0 0 0 33 24
1985 0 0 0 0 0 0 76 50
1986 0 0 0 0 0 0 45 22
1987 0 0 0 0 0 0 6 39
1988 0 0 0 0 0 0 0 14
1989 0 0 0 0 0 0 4 1
1993 3 0 0 0 0 384 20 0
1994 34 0 0 0 0 592 47 0
1995 26 0 0 0 0 557 10 0
1996 27 0 0 0 0 284 18 5
1997 147 0 0 0 0 262 34 8
1998 53 0 0 0 0 476 5 130
1999 23 326 0 0 0 362 1 9
2000 0 192 0 0 0 243 1 3
2001 0 704 0 0 0 83 9 5
2002 194 1457 0 0 0 182 1 3
2003 800 1519 221 0 0 31 6 0
2004 675 1233 162 26 0 0 0 0
2005 869 1754 162 29 0 0 0 0
2006 362 1498 87 29 0 0 0 0
2007 313 1583 138 77 0 0 0 0
2008 189 1896 147 37 9 0 0 0
2009 464 2525 153 69 1 0 0 0
2010 218 2318 144 49 3 0 0 0
2011 391 2264 54 45 5 0 0 0
2012 228 2673 81 125 0 0 0 0
2013 356 2121 61 114 5 0 0 0
2014 680 1822 116 57 19 0 0 0
2015 683 1869 150 53 14 0 0 0
2016 928 800 70 24 1 0 0 0
2017 1326 1227 120 74 6 0 0 0
2018 908 2556 51 116 14 0 0 0
2019 1800 2787 78 103 0 0 0 0
2020 891 129 0 0 0 0 0 0
2021 831 1827 0 74 2 0 0 0
2022 669 1825 70 52 5 0 0 0
2023 1534 1675 159 144 0 0 0 0

Retained fish tend to be larger than released fish. However, there are very few released fish. Washington has no measured released fish in RecFIN. Between Oregon and California, 94.8% of lengths are for retained fish. Some fraction of those released fish is assumed to have survived, which would skew the ratio even more towards retained fish.

We plan to exclude released fish from composition data.

The fish in Washington also look slightly larger than those in Oregon and California. This difference is more pronounced than it is in survey data, indicating a possible selectivity effect.

At-Sea

YEAR n_length
1976 206
1978 277
1979 5
1980 3111
1982 177
1985 43
1989 14
1992 4641
1993 2435
1994 5024
1995 2568
1996 4127
1997 5201
1998 2898
1999 5532
2000 3847
2001 1573
2002 832
2003 2134
2004 2864
2005 5094
2006 5808
2007 5557
2008 4731
2009 3571
2010 5709
2011 4809
2012 1482
2013 1844
2014 1314
2015 1646
2016 4213
2017 8299
2018 4330
2019 3899
2020 922
2021 235
2022 97
2023 1286

Figure of length frequencies in at-sea hake fishery for prioritizing which years to age.

Survey data

STAT is working on it!