U.S. Dept Commerce/NOAA/NMFS/NWFSC/Publications
Table 1.--Summer stream temperatures from Illinois River tributaries which are thought to be utilized by steelhead (Forest Service 1992b).
Location Comments Date Time Temperature
(°C)
Baker Creek At confluence July 1992 1530 16.8
Briggs Creek At confluence July 1992 1200 21.1
Lower reach, average July-Sept 1989-90 -- 17.2
Middle reach, average July-Sept 1989-90 -- 14.4
Upper reach, average July-Sept 1989-90 -- 14.4
Clear Creek
     (tributary to
     Deer Creek)		 Reach 2, average June-July 1990 -- 13.3
Daily Creek At confluence July 1992 0900 15.6
Deer Creek At confluence Aug 1992 1030 22.8
Fall Creek At confluence July 1992 1030 18.1
Indigo Creek Reach 3 Aug 1990 -- 17.8
Little Silver
     Creek		 Reach 4, average Aug-Sept 1991 -- 11.7
Reach 5, average Aug-Sept 1991 -- 11.1
Panther Creek At confluence July 1992 1200 20.0
Salmon Creek At confluence July 1992 1100 19.4
Sixmile Creek At confluence July 1992 1030 19.4
Table 2.--Comparison of smolt age frequency for selected populations of winter steelhead. Populations are arranged from north to south.
Sample Freshwater age
Population size 1 2 3 4 Reference
Chilliwack River, BC 771 0.02 0.62 0.35 0.01 Maher and Larkin 1955
Kalama River, WA 3,114 -- 0.88 0.11 <0.01 Leider et al. 1986
Sand Creek, OR 170 -- 0.74 0.26 -- Bali 1959
Alsea River, OR 978 0.01 0.80 0.18 <0.01 Chapman 1958
Coquille River, OR 81 -- 0.54 0.45 0.01 Bali 1959
Rogue River, OR* 714 0.12 0.66 0.21 0.01 ODFW 1990
Illinois River, OR 125 0.01 0.59 0.38 0.02 ODFW 1992a
Chetco River, OR 90 0.01 0.39 0.55 0.05 Bali 1959
*These data are from adult fish collected in the lower Rogue River and therefore may include steelhead from the Illinois and Applegate Rivers.
Table 3.--Comparison of mean smolt size for selected populations of winter steelhead. Populations are arranged from north to south.
Population Mean smolt size (mm) Reference
Keogh River, BC 173 Ward and Slaney 1988
Chilliwack River, BC 152-215 Maher and Larkin 1955
Necanicum River, OR 175 Bali 1959
Nehalem River, OR 165 Bali 1959
Wilson River, OR 162 Bali 1959
Trask River, OR 173 Bali 1959
Sand River, OR 162 Bali 1959
Nestucca River, OR 165 Bali 1959
Salmon River, OR 168 Bali 1959
Siletz River, OR 180 Bali 1959
Alsea River, OR 147-168 Chapman 1958
South Fork Coos River, OR 175 Bali 1959
Coquille River, OR 183 Bali 1959
Sixes River, OR 170 Bali 1959
Elk River, OR 200 Bali 1959
Illinois River, OR 147 Rivers 1957
Chetco River, OR 218 Bali 1959
Winchuck River, OR 200 Bali 1959
Table 4.--Saltwater age frequency for selected winter steelhead populations. Populations are arranged from north to south.
Saltwater age at first spawning
Population Sample size 1 2 3 4 Reference
Sand Creek, OR 170 0.25 0.73 0.02 -- Bali 1959
Alsea River, OR 978 0.05 0.66 0.26 0.03 Chapman 1958
Coquille River, OR 81 0.51 0.44 0.05 -- Bali 1959
Rogue River, OR* 547 0.14 0.86 -- -- ODFW 1990
Illinois River, OR 122 0.07 0.83 0.10 -- ODFW 1992a
Chetco River, OR 90 0.89 0.11 -- -- Bali 1959
*These data are from adult fish collected in the lower Rogue River and therefore may include steelhead from the Illinois and Applegate Rivers.
Table 5.--Runs and races of Rogue River steelhead described by Rivers (1957).
Run Race
Spring Upper Rogue
Big Butte

Fall Illinoisa
Applegateb
Middle Rogue
Upper Rogue

Winter Lower Rogue
Illinois
Middle Rogue
Applegate
Upper Rogue
aIdentified as very weak (Rivers 1957).
bIdentified as almost extinct (Rivers 1957).
Table 6.--Rogue River basin steelhead run timing, based on time of river entry, as described by the Oregon Department of Fish and Wildlife historically (Rivers 1963) and at present (Fustish et al. 1989). This document follows the description of Fustish et al. 1989.
Run name Rivers (1963) Fustish et al. (1989)
Spring March-June ---
Summer --- April-October
Fall August-October ---
Winter November-February November-March
Table 7.--Frequency of total age at first spawning for selected winter steelhead populations. Populations are arranged from north to south. See Table 2 for sample sizes.
Total age
Population 2 3 4 5 6 Reference
Kalama River, WA -- 0.04 0.58 0.36 0.02 Leider et al. 1986
Sand Creek, OR -- 0.14 0.69 0.17 -- Bali 1959
Alsea River, OR -- 0.04 0.55 0.36 0.05 Chapman 1958
Coquille River, OR -- 0.22 0.56 0.21 0.01 Bali 1959
Rogue River, OR* <0.01 0.15 0.66 0.18 <0.01 ODFW 1990
Illinois River, OR -- 0.03 0.53 0.39 0.05 ODFW 1992a
Chetco River, OR 0.01 0.36 0.51 0.12 -- Bali 1959
*These data are from adult fish collected in the lower Rogue River and therefore may include steelhead from the Illinois and Applegate Rivers.
Table 8.--Steelhead smolt production by hatcheries, listed from north to south (Light 1989).
Location (number) Average annual smolt
production, 1978-87		 Percent of total
Alaska (4) 62,000
0.2
British Columbia (22) 616,000
2.5
Washington (44) 6,782,000
27.6
Idaho (4) 10,320,000
41.9
Oregon (26) 4,537,000
18.4
California (9) 2,304,000
9.4

Total (109) 24,621,000        100
Table 9.--Hatchery steelhead introductions in the Illinois River basin (ODFW 1992d).
Year Quantity Life history stage Run type Source
1934-76 27,438 fingerlings winter unknown
1976 5,391 fingerlings summer unknown
1978-80 3,000 adults winter Cole Rivers Hatchery
1985-89 340,525 egg-box fry winter Cole Rivers Hatchery
1989 4,096 fingerlings winter Cole Rivers Hatchery
1990 15,000 fingerlings summer Cole Rivers Hatchery
Table 10.--Sample sizes and indices of genetic variability for steelhead populations examined in the genetic analysis. For run timing, W = winter, S = summer, and W/S = uncertain or a mixture of both forms.
Polymorphic
Drainage Run Sample loci
Population timing size (%) Heterozygosity
Illinois River
       Briggs Creek W 40 43.6 0.091
Grayback Creek W 40 53.8 0.094
Indigo Creek W/S 40 51.3 0.083
Lawson Creek W/S 30 53.8 0.080
Rogue River
Lobster Creek W/S 40 46.2 0.071
Little Butte Creek W/S 40 61.5 0.080
Cole Rivers Hatchery W 40 53.8 0.072
Coastal Oregon
Nehalem River W 40 46.2 0.097
Yaquina River W 40 38.5 0.074
Elk River W 40 59.0 0.086
Bandon Hatchery
  (Coquille R. stock)		 W 40 30.8 0.074
Pistol River W 40 48.7 0.091
Winchuck River W 40 61.5 0.098
Coastal California
Smith River W 40 51.3 0.084
Klamath River W/S 40 53.8 0.080
Snake River
Camp Creek (1990) S 99 53.8 0.090
Camp Creek (1992) S 10 35.9 0.103
Table 11.--Genetic affinities of Illinois River winter steelhead populations. Populations with the smallest genetic distance (Nei 1978) to each of the four sampled Illinois River populations are indicated.
Illinois River population Most similar population Genetic distance
Briggs Creek Indigo Creek 0.00085
Grayback Creek Klamath River 0.00089
Indigo Creek Elk River 0.00046
Lawson Creek Klamath River 0.00017
Table 12.--Estimates of average annual steelhead runs in the mid-1980s (Light 1987).
Thousands of adults Percent
Region Hatchery Wild Total wild
Alaska 2 73 75 97
British Columbia 34 190 224 85
Washington Coast/Puget Sound 151 64 215 30
Columbia Basin 330 122 452 27
Oregon Coast 222 108 330 33
California 60 215 275 78

Total 799 772 1,571 49
Table 13. --Estimated angler catch of Illinois River Steelhead. Total steelhead catch by calendar year for 1953 to 1972 from Koski (1963) and Phelps (1973).
Calendar year Total catch
1953 3,441
1954 2,695
1955 N/A*
1956 2,439
1957 2,140
1958 2,201
1959 4,079
1950 2,384
1961 1,006
1962 1,251
1963 1,188
1964 936
1965 1,088
1966 1,472
1967 966
1968 1,935
1969 2,519
1970 2,669
1971 2,985
1972 2,595
*Data for 1955 are unavailable.
Table 14.--Estimated angler catch of Illinois River Steelhead. Steelhead catch by run for 1969-70 to 1990-91 from ODFW (1980, 1992b).
Run
Run Year Winter Summer Total
1969-70 2,395 38 2,433
1970-71 3,444 189 3,633
1971-72 2,699 69 2,768
1972-73 1,893 41 1,934
1973-74 2,491 62 2,553
1974-75 2,815 150 2,965
1975-76 1,772 120 1,892
1976-77 641 97 738
1977-78 1,597 149 1,746
1978-79 638 25 663
1979-80 534 0 534
1980-81 1,261 0 1,261
1981-82 797 0 797
1982-83 384 22 406
1983-84 526 0 526
1984-85 1,150 0 1,150
1985-86 606 0 606
1986-87 995 0 995
1987-88 403 0 403
1988-89 550 0 550
1989-90 233 0 233
1990-91 171 0 171
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