Kenai Chinook Estimates, Indices and Inseason Run Summaries

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

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

  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
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 new early-run king salmon optimal escapement goal range is 3,900 to 6,600 large king salmon (> 34 inches). The new late-run king salmon sustainable escapement goal range is 13,500 to 27,000 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.

Contact: Northern Kenai Sport Fish Assistant Area Manager,
(907) 262-9368

Weekly Sportfish Fishing Report for this area

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

Date
2018
Count
2018
Cumulative
2018
Cumulative
2017
Cumulative
2016
Cumulative
2015
Notes for
2018
Aug-20 285 16,957 22,133 17,447 17,687  
Aug-19 242 16,672 21,844 17,447 17,530  
Aug-18 217 16,430 21,440 17,254 17,410  
Aug-17 151 16,213 21,097 17,091 17,175  
Aug-16 223 16,062 20,922 17,012 16,945  
Aug-15 314 15,839 20,687 16,698 16,807  
Aug-14 229 15,525 20,452 16,517 16,595  
Aug-13 163 15,296 20,272 16,227 16,323  
Aug-12 411 15,133 19,917 15,847 15,972  
Aug-11 307 14,722 19,634 15,503 15,804  
Aug-10 314 14,415 19,307 15,401 15,623  
Aug-09 271 14,101 19,102 15,027 15,103  
Aug-08 278 13,830 18,704 14,762 14,680  
Aug-07 699 13,552 18,112 14,485 14,197  
Aug-06 413 12,853 17,587 14,126 13,768  
Aug-05 592 12,440 16,920 13,860 13,062  
Aug-04 437 11,848 16,166 13,468 12,470  
Aug-03 556 11,411 15,429 13,051 12,018  
Aug-02 421 10,855 14,952 12,729 11,626  
Aug-01 555 10,434 14,350 12,551 11,324  
Jul-31 488 9,879 13,916 12,266 11,161  
Jul-30 422 9,391 12,993 12,036 10,922  
Jul-29 451 8,969 12,613 11,605 10,584  
Jul-28 417 8,518 12,070 11,121 10,251  
Jul-27 426 8,101 11,448 10,580 9,876  
Jul-26 453 7,675 11,050 10,028 9,484  
Jul-25 647 7,222 10,374 9,669 8,935  
Jul-24 399 6,575 9,813 9,226 8,331  
Jul-23 501 6,176 8,828 8,785 7,305  
Jul-22 417 5,675 8,439 8,350 6,483  
Jul-21 380 5,258 8,041 7,843 5,836  
Jul-20 567 4,878 7,556 7,505 5,353  
Jul-19 513 4,311 7,206 7,207 5,033  
Jul-18 359 3,798 6,706 6,824 4,653  
Jul-17 269 3,439 6,024 6,330 4,128  
Jul-16 272 3,170 5,385 5,967 3,651  
Jul-15 128 2,898 4,770 5,727 3,349  
Jul-14 151 2,770 4,330 5,329 3,041  
Jul-13 223 2,619 3,938 4,751 2,739  
Jul-12 296 2,396 3,540 4,178 2,455  
Jul-11 122 2,100 3,119 3,400 2,141  
Jul-10 93 1,978 2,715 2,803 1,887  
Jul-09 248 1,885 2,323 2,347 1,533  
Jul-08 224 1,637 1,852 2,094 1,227  
Jul-07 362 1,413 1,484 1,817 966  
Jul-06 253 1,051 1,194 1,609 790  
Jul-05 200 798 1,031 1,403 669  
Jul-04 199 598 820 1,066 498  
Jul-03 121 399 609 867 321  
Jul-02 163 278 437 638 230  
Jul-01 115 115 181 264 79  

Non-Sonar Tools

Late 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.


Late 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.

Late Run Eastside Setnet CPUE Index

The Eastside Setnet Catch per Unit Effort (CPUE) is an index of the total number of late-run Kenai River Chinook salmon.

Late 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 Late Run Kenai River Chinook Inseason Summary

FRIDAY, AUGUST 24, 2018

King Salmon Run Update:

The late-run king salmon sustainable escapement goal (SEG) range of 13,500 to 27,000 large king salmon (> 34 inches) has been achieved. The preliminary estimate of king salmon passage at the river mile 14 ARIS sonar site was 16,957. Factoring estimated upriver harvest and spawning below the sonar provides an escapement estimate of 17,340 late run king salmon. Based on the estimated mean of the mid-point for 2013-2017 runs of July 27, the 2018 run was one day late. The final day of sonar counts was August 20.

Fishery Harvest:

The preliminary creel survey estimate of king salmon sport fish harvest (including catch-and-release mortality) downstream of the sonar at river mile 14 was approximately 65 fish. The preliminary estimate of sport fish harvest (including catch-and-release mortality) upstream of the sonar was 308 fish. By summation of harvest estimates upstream and downstream of Soldotna results in a preliminary estimate of total inriver sport fish harvest for 2018 of 373 Chinook salmon. Inriver harvest estimates will be refined upon publication of the 2018 Statewide Harvest Survey and 2018 Freshwater Sport Fish Guide Logbook data during September of 2018. The inriver sport fishery for king salmon was restricted beginning July 1 by prohibiting the use of bait, and the retention of king salmon in the personal use dip net fishery. On July 13, about the quarter point, the retention of king salmon was prohibited from the mouth of the Kenai upriver to Slikok Creek and remained closed from Slikok upstream to Skilak Lake; and only allowed one unbaited single hook artificial lure. These regulations remained in effect until the Kenai River king salmon sport fishery closed July 31

The preliminary estimated commercial eastside set net harvest of large Kenai River king salmon was 790 fish. The commercial eastside set net fishery was restricted during the fishing season as restrictions were placed on the inriver sport fishery consistent with and operated as outlined in the Kenai River Late-Run King Salmon Management Plan. Post-season analysis of tissue samples collected from king salmon harvested in the eastside set net fishery will be used to estimate the component of Kenai River king salmon.

The preliminary personal use harvest was 0. Retention of king salmon was prohibited by emergency order the entire season.

Additional Information:

The netting project at river mile 8.6 captured a total of 217 king salmon, approximately 66% were large. Of the large king salmon captured 57% were female. Compared to last year, the crew captured a total of 339 king salmon (92% large) of which 53% of the large king salmon were female. Using METF length as a proxy for age, a majority (46%) of the 2018 late-run king salmon were age-1.4, followed by 29% age-1.2, 16% age-1.3, 8% age-1.5, and 1% age-1.1’s.

Scales from both the netting project and the creel survey are being processed and final estimates of the age, sex and length composition of late-run king salmon are still forthcoming.

This information was compiled based on raw and historical data for inseason management purposes.
Final data is subject to change.