Kenai Chinook Estimates, Indices and Inseason Run Summaries

Location: Kenai River (Chinook)
Species: Chinook - Early Run
Method: Sonar

The selected years are color-coded in the graphs below:

  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
Daily Counts
Cumulative

Description: In 2015 the department began managing Kenai River king salmon runs using an ARIS sonar station located at river mile 14. In 2017 the Department modified the Kenai River king salmon escapement goals from goals based on king salmon of all sizes, to escapement goals based on large king salmon (fish over 34 inches) only. The early-run king salmon optimal escapement goal range is 3,900 to 6,600 large king salmon (> 34 inches). In 2020 the late-run king salmon escapement goal was modified to an optimal escapement goal range is 15,000 to 30,000 large king salmon (> 34 inches). The ARIS sonar counts found on this page are the daily and seasonal cumulative passage estimates of the number of large king salmon passing the sonar site. Additionally, the past years counts displayed on this page have been converted to large fish counts for comparison. These estimated numbers of large king salmon passing the sonar site are the primary tool for the Kenai River king salmon assessment program that also includes a sport angler harvest survey, and a netting program. The data gathered in these assessments are used together to determine king salmon run strength. This data in conjunction with Fishery Management Plans, allows fishery managers to determine if emergency order regulation changes to the fisheries are needed during the season to help ensure that the escapement goals are achieved. These abundance assessments as well as information about the status of the run and inseason management actions can be viewed via this website on the above tabs. Information is also available by telephone at (907)262-9097.

Optimal Escapement Goal for Chinook - Early Run: 3,900 - 6,600 (Graphed above)
Optimal Escapement Goal for Chinook - Late Run: 15,000 - 30,000

Contact: Northern Kenai Sport Fish Area Manager,
(907) 260-2920

Weekly Sportfish Fishing Report for this area

46 records returned for the years selected. Dashes indicate days with no count.
[Export results in Excel format or JSON format]

Date
2020
Count
2020
Cumulative
2020
Cumulative
2019
Cumulative
2018
Cumulative
2017
Notes for
2020
Jun-30 54 2,444 4,186 3,000 7,237  
Jun-29 73 2,390 4,119 2,903 7,128  
Jun-28 67 2,317 4,024 2,855 7,001  
Jun-27 49 2,250 3,975 2,734 6,917  
Jun-26 43 2,201 3,878 2,668 6,790  
Jun-25 42 2,158 3,775 2,614 6,621  
Jun-24 30 2,116 3,657 2,542 6,507  
Jun-23 91 2,086 3,554 2,494 6,423  
Jun-22 73 1,995 3,463 2,447 6,332  
Jun-21 85 1,922 3,390 2,387 6,242  
Jun-20 103 1,837 3,323 2,326 6,109  
Jun-19 67 1,734 3,176 2,267 6,043  
Jun-18 248 1,667 3,085 2,243 5,922  
Jun-17 145 1,419 3,011 2,182 5,663  
Jun-16 109 1,274 2,944 2,116 5,470  
Jun-15 24 1,165 2,901 2,098 5,277  
Jun-14 92 1,141 2,774 2,013 4,963  
Jun-13 60 1,049 2,671 1,892 4,589  
Jun-12 73 989 2,453 1,820 4,282  
Jun-11 24 916 2,332 1,742 4,010  
Jun-10 115 892 2,126 1,609 3,726  
Jun-09 109 777 1,981 1,488 3,473  
Jun-08 85 668 1,818 1,385 3,298  
Jun-07 55 583 1,661 1,282 3,027  
Jun-06 79 528 1,524 1,161 2,820  
Jun-05 91 449 1,304 1,041 2,619  
Jun-04 86 358 1,074 932 2,335  
Jun-03 36 272 898 805 2,135  
Jun-02 42 236 699 702 1,767  
Jun-01 18 194 584 587 1,495  
May-31 67 176 457 478 1,260  
May-30 24 109 409 417 1,091  
May-29 25 85 343 338 892  
May-28 12 60 283 290 741  
May-27 0 48 203 241 650  
May-26 0 48 156 192 552  
May-25 18 48 120 186 422  
May-24 18 30 84 174 319  
May-23 12 12 48 138 259  
May-22 0 0 24 96 168  
May-21 0 0 18 66 150  
May-20 0 0 0 48 144  
May-19 0 0 6 42 108  
May-18 0 0 0 18 66  
May-17 0 0 0 0 36  
May-16 0 0 0 0 6  

Non-Sonar Tools

Early Run Netting Project CPUE Index

The Net Catch Per Unit Effort (CPUE) is an index of the numbers of Chinook salmon moving into the Kenai River and is based on the rate at which Chinook salmon are captured by the netting project conducted at river mile 8.6.


Early Run Sport CPUE Index

The Sport Catch Per Unit Effort (CPUE) is an index of the numbers of Chinook salmon in the lower Kenai River and is based on the success rate of anglers fishing downstream of the Sterling Highway Bridge Crossing in Soldotna.

Early Run Netting Project Large Fish CPUE Index

The Net Catch Per Unit Effort (CPUE) is an index of the numbers of Chinook salmon moving into the Kenai River and is based on the rate at which Chinook salmon are captured by the netting project conducted at the sonar station located at river mile 8.6.

Weekly Sportfish Fishing Report for this area


Final Early Run Kenai River Chinook Inseason Summary

KENAI RIVER EARLY-RUN KING SALMON FINAL 2020 SUMMARY

King Salmon Run Update:

The Kenai River king salmon sonar began counting on May 16, 2020. The total estimated passage through June 30 was 2,444 large king salmon (> 75 cm mid-eye-to-tail-fork-length or ~ 34 inches in total length). The return is well below the preseason forecast estimate of 4,794 large fish and the historical average of 5,200 large fish. The department applies a catch-and-release mortality rate of 8% to the catch of king salmon above the sonar to generate a preliminary spawning escapement estimate of 2,427 large early-run king salmon and a total inriver run estimate of 2,459 large fish. Catch-and-release mortality below the sonar is estimated to be 15 large fish bringing the preliminary total estimated mortality for the early-run fishery to 32 large fish.  The mid-point of the run occurred on June 16 which is 5 days late when compared to the historical mid-point of June 11. This is the latest run timing that has been observed since monitoring began at the current sonar site at RM 14 in 2013. Preliminary age composition estimates show a notable low presence of 4-ocean fish, making up ~24% of the run when compared to the historical average of ~40% of the run. The 4-ocean fish are progeny of the 2014 brood year which had the second lowest observed escapement in the historical data. The predominate age classes this year are the 3-ocean fish at ~44% and the 2-ocean fish at ~35% of the run.

Neither the optimal escapement goal (3,900 – 6,600) or the sustainable escapement goal (2,800 – 5,600) was achieved.

The preseason outlook for the 2020 early-run can be found at:

http://www.adfg.alaska.gov/static/fishing/pdfs/sport/byarea/southcentral/2020KenaiEarlyRunOutlook.pdf

This information was compiled based on raw and historical data for inseason management purposes.

Final data is subject to change.