Chenik Lake - Cook Inlet Aquaculture Association, Kenai, Alaska

The 2008 Shell Lake adult salmon escapement was enumerated from 14 July to 3 September.
During this time 2,620 adult sockeye (O. nerka) salmon returned to Shell Creek. Other fish
counted during this time were 5 adult pink (O. gorbuscha) salmon.
Based on adult sockeye samples collected, 8.69% were age 1.1, 17.07% were age 1.2, 53.73%
were age 1.3, 1.37% were age 1.4, 0.69% were age 2.1, 13.91% were age 2.2, 4.19% were age
2.3, and 0.34% were age 3.3. Of the returning salmon population, 34% were male and 66% were
female. The average length of adult sockeye population was 511 mm. The average length of
adult sockeye males was 539 mm. The average length of adult sockeye females was 496 mm. A
summary of 2006-2008 adult sockeye characteristics is listed in Table 4.
During the 2006, 2007, and 2008 adult escapements, field personnel have seen northern pike in
Shell Creek but were unable to conduct a statistically valid enumeration.
Table 5 - Summary of Shell Lake adult sockeye salmon characteristics
Major Age Classes
Escapement Male
Female
1.2 1.3 2.2 2.3
Year (%) Lth (mm) (%) Lth (mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm) (%) Lth(mm)
2006 69,800 47% 496 53% 481 83.24% 484 7.63% 528 8.75% 574 0.19% 555
2007 26,863 46% 548 54% 523 3.23% 467 87.65% 537 0.29% 443 8.82% 538
2008 2,620 34% 539 66% 496 17.07% 496 53.73% 542 13.91% 500 4.19% 544
Mean 33,094 42% 528 58% 500 34.51% 482 49.67% 536 7.65% 506 4.40% 546
Min 2,620 34% 496 53% 481 3.23% 467 7.63% 528 0.29% 443 0.19% 538
Max 69,800 47% 548 66% 523 83.24% 496 87.65% 542 13.91% 574 8.82% 555
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