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:

  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
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
Optimal Escapement Goal for Chinook - Late Run: 15,000 - 30,000 (Graphed above)

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

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
2022
Count
2022
Cumulative
2022
Cumulative
2021
Cumulative
2020
Cumulative
2019
Cumulative
2018
Notes for
2022
Aug-20 - 11,124 11,832 11,499 11,868 16,957  
Aug-19 - 11,124 11,754 11,486 11,747 16,672  
Aug-18 - 11,124 11,656 11,413 11,723 16,430  
Aug-17 - 11,124 11,486 11,292 11,687 16,213  
Aug-16 - 11,124 11,419 11,062 11,571 16,062  
Aug-15 - 11,124 11,279 10,813 11,413 15,839  
Aug-14 - 11,124 11,151 10,491 11,298 15,525  
Aug-13 - 11,124 10,884 10,254 11,074 15,296  
Aug-12 - 11,124 10,684 10,066 11,013 15,133  
Aug-11 - 11,124 10,491 9,867 10,898 14,722  
Aug-10 - 11,124 10,303 9,719 10,753 14,415  
Aug-09 - 11,124 9,757 9,616 10,629 14,101  
Aug-08 - 11,124 9,248 9,483 10,538 13,830  
Aug-07 249 11,124 8,872 9,325 10,410 13,552  
Aug-06 388 10,875 8,419 9,185 10,198 12,853  
Aug-05 463 10,487 8,064 8,827 10,059 12,440  
Aug-04 313 10,024 7,747 8,494 9,889 11,848  
Aug-03 334 9,711 7,504 8,089 9,586 11,411  
Aug-02 376 9,377 6,729 7,932 9,434 10,855  
Aug-01 315 9,001 6,420 7,647 9,258 10,434  
Jul-31 497 8,686 6,189 7,465 9,118 9,879  
Jul-30 364 8,189 5,818 7,112 8,906 9,391  
Jul-29 431 7,825 5,636 6,681 8,615 8,969  
Jul-28 317 7,394 5,296 6,456 8,373 8,518  
Jul-27 546 7,077 5,077 6,019 8,118 8,101  
Jul-26 395 6,531 4,864 5,692 7,876 7,675  
Jul-25 461 6,136 4,610 5,438 7,543 7,222  
Jul-24 346 5,675 4,452 5,146 7,213 6,575  
Jul-23 402 5,329 4,270 4,970 6,849 6,176  
Jul-22 388 4,927 4,142 4,787 6,473 5,675  
Jul-21 397 4,539 3,953 4,520 5,970 5,258  
Jul-20 310 4,142 3,717 4,164 5,424 4,878  
Jul-19 413 3,832 3,207 3,879 4,921 4,311  
Jul-18 437 3,419 2,872 3,615 4,551 3,798  
Jul-17 327 2,982 2,581 3,404 4,132 3,439  
Jul-16 303 2,655 2,363 3,153 3,647 3,170  
Jul-15 205 2,352 2,113 2,941 3,343 2,898  
Jul-14 257 2,147 1,871 2,680 3,021 2,770  
Jul-13 139 1,890 1,714 2,220 2,657 2,619  
Jul-12 154 1,751 1,538 1,699 2,397 2,396  
Jul-11 122 1,597 1,423 1,407 2,067 2,100  
Jul-10 313 1,475 1,303 1,249 1,734 1,978  
Jul-09 212 1,162 1,121 989 1,455 1,885  
Jul-08 219 950 994 831 1,252 1,637  
Jul-07 194 731 812 728 1,053 1,413  
Jul-06 133 537 709 583 890 1,051  
Jul-05 97 404 606 407 630 798  
Jul-04 85 307 515 304 473 598  
Jul-03 50 222 369 219 314 399  
Jul-02 49 172 253 146 235 278  
Jul-01 123 123 140 73 97 115  

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 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


Late Run Kenai River Chinook Inseason Summary for Fri. Aug 5

KENAI RIVER LATE-RUN KING SALMON SUMMARY #07

King Salmon Run Update:

The cumulative estimated passage through August 4 is 10,024 large king salmon. The optimal escapement goal is 15,000 – 30,000 large king salmon. Inseason assessment of the king salmon run consists of the sonar at RM 14 on the Kenai River mainstem, a sport angler creel survey of the lower river, inriver test netting for age, sex, length composition, and sampling of king salmon harvest in the east side set net commercial fishery. These ongoing information sources, along with historical data allow ADF&G to formulate inseason run projections of estimated escapement, harvest, and total run of large Kenai River king salmon. Figure 1 is a table of the 2022 projections using data that is available through August 4. The inseason projection of escapement using the historical mean run timing is approximately 14,202 large fish. Using historical mean run timing the run is at ~ 72% complete.

In response to the inseason projections of escapement being less than 15,000 large king salmon, ADF&G issued emergency order 2-KS-1-53-22, which closes sport fishing for king salmon on the Kenai River drainage, including catch-and-release, effective 12:01 a.m. Sunday, July 17 through 11:59 p.m. Sunday, July 31, 2022. The Kenai River Late-Run King Salmon Management Plan states: if the projected late run escapement is less than 15,000 king salmon 75 cm mid eye to tail fork the department shall close the sport fisheries in the Kenai River and the salt waters of Cook Inlet north of the latitude of Bluff Point to the taking of king salmon. In addition, ADF&G shall close the commercial drift gillnet fishery in the Central District within one mile of the Kenai Peninsula shoreline north of the Kenai River and within one and one-half miles of the Kenai Peninsula shoreline south of the Kenai River; and close the commercial set gillnet fishery in the Upper Subdistrict and the Central District. Additionally, from August 1 through August 15, bait and multiple hooks will be prohibited in the Kenai River coho salmon sport fishery to reduce incidental catch of king salmon that are still entering the river.

Fishery Update:

The Kenai River late-run king salmon sport fishery is closed.

The preseason outlook for the 2022 late-run can be found at:

http://www.adfg.alaska.gov/static/fishing/pdfs/sport/byarea/southcentral/2022KenaiLateRunOutlook.pdf

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

Final data is subject to change.

Figure 1. 2022 Inseason Summary Estimates for Kenai River Late-run Large Chinook Salmon

Sonar data thru: 4-Aug   ESSN Summary          
Current Inriver King Assessment Information ESSN Total King Salmon harvest 306 (Fish Ticket Catch Report)
Most Recent Daily Sonar  313 ESSN Large King Salmon Harvests (all stocks) Based on Inseason Length Data 46
Cumulative Sonar to Date 10,024 Percentage Large King Salmon in ESSN Sample Thru  4-Aug 15%  
Est. Creel Harvest to Date  0 Min, mean, and max of Large ESSN King Salmon that were of Kenai origin (2010-2018 data)        
Creel Harvest Above Sonar  0 Kenai Large Contribution   61% 70% 79%  
Creel Harvest Below Sonar  0 ESSN Large Kenai Harvest to Date  28 32 36  
Creel All Sizes of King Salmon 0 ESSN Projected Kenai Large Harvest 28 32 36  
                     
Projected end of season estimates for large late-run Kenai River Chinook salmon.          
Run Timing Run to Date Estimated run to Sonar RM14 Estimated inriver run (includes spawning & harvest below sonar) Estimated Escapement (includes spawners below sonar) Estimated Sport Harvest Above Sonar RM 14 to Skilak Lake Estimated Sport Harvest Below Sonar RM 14 Estimated Total Inriver Sport Harvest Estimated ESSN Harvest Estimated Total Run Estimated Exploitation
On time 72.76% 13,777 14,424 14,202 10 7 17 32 14,456 0.34%
                     
Early Timing Scenarios                
1 early 75.87% 13,212 13,835 13,613 10 7 17 32 13,867 0.35%
2 early 78.75% 12,729 13,332 13,110 10 7 17 32 13,364 0.37%
3 early 81.15% 12,352 12,940 12,718 10 7 17 32 12,972 0.38%
                     
Late Timing Scenarios                
1 late 69.94% 14,333 15,112 14,919 10 7 17 32 14,969 0.33%
2 late 66.97% 14,968 15,599 15,581 10 7 17 32 15,631 0.31%
3 late 64.61% 15,516 16,169 16,151 10 7 17 32 16,201 0.30%
* Retention of king salmon is prohibited in personal use fisheries for 2022