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Alaska Department of Fish and Game


Kenai Chinook Estimates, Indices and Inseason Run Summaries

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

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

  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
Daily Counts
Cumulative

Description: The DIDSON sonar estimates will be updated twice weekly. The daily estimates represent king salmon of all age and size classes and is expanded by 1.55 to account for early-run king salmon passing outside of the ensonified zone, and 1.28 to account for late-run salmon. This DIDSON sonar estimate is used to measure total run abundance relative to the optimum escapement goal of 5,300-9,000 early-run king salmon and the sustainable escapement goal of 15,000–30,000 late-run king salmon. To view daily estimates about king salmon passage go to the Indices of king salmon abundance tab which is updated as data becomes available. The inseason run summary tab will provide information about king salmon passage at the mile 8.6 DIDSON sonar site external link, netting project, creel survey, water conditions and management actions twice each week. Information about the status of the run and inseason management actions are also available by telephone at (907) 262-9097.

Contact: Area Management Biologist,
(907) 262-9368

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]

Date
2014
Count
2014
Cumulative
2014
Cumulative
2013
Cumulative
2012
Cumulative
2011
Notes for
2014
Aug-15 - 7,306 17,028 25,587 26,928  
Aug-14 - 7,306 16,895 25,587 26,928  
Aug-13 - 7,306 16,590 25,587 26,928  
Aug-12 - 7,306 16,316 25,587 26,928  
Aug-11 - 7,306 16,120 25,587 26,928  
Aug-10 - 7,306 15,906 25,587 26,928  
Aug-09 - 7,306 15,682 24,479 26,762  
Aug-08 - 7,306 15,493 23,602 26,354  
Aug-07 - 7,306 15,324 22,829 26,131  
Aug-06 - 7,306 15,131 21,592 25,873  
Aug-05 - 7,306 14,880 20,857 25,328  
Aug-04 - 7,306 14,605 20,487 24,817  
Aug-03 - 7,306 14,230 19,822 24,681  
Aug-02 - 7,306 13,813 19,076 24,485  
Aug-01 - 7,306 13,529 18,314 24,328  
Jul-31 - 7,306 13,023 17,453 23,978  
Jul-30 - 7,306 12,423 16,351 23,269  
Jul-29 - 7,306 11,746 15,625 22,879  
Jul-28 - 7,306 10,943 14,783 22,536  
Jul-27 - 7,306 10,503 13,660 22,308  
Jul-26 - 7,306 10,032 12,559 21,844  
Jul-25 - 7,306 9,365 11,627 21,269  
Jul-24 - 7,306 8,948 11,001 20,322  
Jul-23 - 7,306 8,678 10,394 19,433  
Jul-22 463 7,306 8,291 10,112 18,450  
Jul-21 371 6,843 7,954 9,476 17,545  
Jul-20 1,014 6,472 7,743 8,958 16,347  
Jul-19 887 5,458 7,497 8,127 15,449  
Jul-18 611 4,571 7,090 7,681 14,353  
Jul-17 502 3,960 6,401 6,960 13,178  
Jul-16 250 3,458 5,733 5,676 11,281  
Jul-15 202 3,208 4,985 5,164 10,456  
Jul-14 170 3,006 4,441 4,840 9,515  
Jul-13 262 2,836 3,513 4,029 7,998  
Jul-12 218 2,574 2,974 3,175 6,789  
Jul-11 234 2,356 2,709 2,670 6,122  
Jul-10 196 2,122 2,253 2,126 5,796  
Jul-09 218 1,926 1,722 1,481 5,126  
Jul-08 184 1,708 1,365 1,161 4,668  
Jul-07 366 1,524 1,196 993 4,025  
Jul-06 320 1,158 1,032 838 2,952  
Jul-05 269 838 900 711 2,442  
Jul-04 90 569 695 636 1,970  
Jul-03 180 479 523 539 1,569  
Jul-02 151 299 360 382 1,136  
Jul-01 148 148 174 241 479  

Sonar Tools

Late Run DIDSON Threshold (>30 in.) Sonar Estimate

The DIDSON threshold estimate is an estimate for fish targets that are measured to be 750 millimeters (30 inches) or greater in total length. These estimates are a daily index of the relative abundance of king salmon passage between the transducers at the mile 8.6 sonar and are not expanded to estimate passage of fish outside the ensonified zone.

Show DIDSON Threshold Data Table ↓

Date 2014 2013 2012 2011
Jul-01 78 164 175 272
Jul-02 153 273 269 616
Jul-03 237 376 372 852
Jul-04 283 479 425 1,059
Jul-05 404 588 463 1,313
Jul-06 561 654 541 1,572
Jul-07 730 738 637 2,129
Jul-08 838 841 727 2,497
Jul-09 928 1,022 943 2,793
Jul-10 1,018 1,317 1,425 3,149
Jul-11 1,120 1,582 1,769 3,330
Jul-12 1,210 1,727 2,064 3,711
Jul-13 1,361 2,041 2,558 4,369
Jul-14 1,457 2,530 3,021 5,277
Jul-15 1,553 2,832 3,250 5,776
Jul-16 1,692 3,279 3,564 6,325
Jul-17 1,987 3,641 4,335 7,551
Jul-18 2,347 4,021 4,757 8,375
Jul-19 2,866 4,250 5,046 9,328
Jul-20 3,463 4,407 5,697 10,299
Jul-21 3,686 4,546 6,047 11,108
Jul-22 3,963 4,745 6,492 11,694
Jul-23 - 4,997 6,685 12,352
Jul-24 - 5,159 7,076 13,076
Jul-25 - 5,400 7,525 13,801
Jul-26 - 5,768 8,030 14,224
Jul-27 - 6,046 8,740 14,508
Jul-28 - 6,330 9,457 14,665
Jul-29 - 6,807 9,982 14,885
Jul-30 - 7,266 10,412 15,129
Jul-31 - 7,652 11,069 15,533
Aug-01 - 7,978 11,533 15,749
Aug-02 - 8,173 12,027 15,843
Aug-03 - 8,481 12,528 15,952
Aug-04 - 8,735 13,021 16,030
Aug-05 - 8,916 13,274 16,345
Aug-06 - 9,091 13,856 16,719
Aug-07 - 9,224 14,775 16,894
Aug-08 - 9,350 15,378 17,058
Aug-09 - 9,477 16,011 17,348
Aug-10 - 9,634 16,909 17,460
Aug-11 - 9,809 17,403 -
Aug-12 - 9,989 17,789 -
Aug-13 - 10,169 18,121 -
Aug-14 - 10,392 18,408 -
Aug-15 - 10,504 18,521 -
- - - -

Late Run Sonar Net Apportioned Cumulative Passage Estimates

The Net Apportioned sonar estimate of Chinook salmon passage is based on the combination of the number of fish detected by sonar and number of Chinook salmon captured by the netting project conducted at the sonar station located at river mile 8.6.


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 the sonar station located 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.

Weekly Sportfish Fishing Report for this area


Late Run Kenai River Chinook Inseason Summary for Tue. Jul 22

King salmon run update: 

On July 22 the daily estimated passage was 371 king salmon for a season total of 6,843 king salmon.

The department is continuing to examine further inseason restrictive actions in a step-down manner to administer during the remainder of July. Using average run timing approximately 49% of the run is completed at this time. Without a significant improvement in run strength that indicates the sustainable escapement goal of 15,000-30,000 fish will be achieved for the late-run of king salmon, the department could further restrict the inriver king salmon sport fishery by closing it this week.

The next regular update is planned for Friday, July 25th.

Fishery Update:

Starting July 19, fishing for king salmon is restricted to catch and release with additional restrictions found in the emergency orders below:

The emergency orders can be found at the following links:

http://dfg.alaska.gov/Static-sf/EONR/PDFs/2014/R2/EO-2-KS-1-04-14_closeERKenaiKing%20final.pdf
http://www.adfg.alaska.gov/Static-sf/EONR/PDFs/2014/R2/EO-2-KS-1-26-14%20LRKenaiKing%20No%20Bait.pdf
http://www.adfg.alaska.gov/Static-sf/EONR/PDFs/2014/R2/EO-2-KS-1-40-14%20LR%20Kenai%20king%20Barbless%20CnR.pdf

The news release can be found at the following link:

http://www.adfg.alaska.gov/sf/EONR/index.cfm?ADFG=region.NR&NRID=1997

Fishing effort and catch rates have improved over this last week of the late-run fishery. King salmon captured in the netting program during the past week have been primarily larger, older fish.

Water Conditions:

Water clarity: Good above tidal influence; last visibility readings 1.0 meters at river mile 15.3, and 0.79 meters at the river mile 8.6 sonar station.

Water flow/current: 13,600 ft3/sec today vs. 49 yr median (14,100 ft3/sec). Water level is below the average of 14,200 ft3/sec for this time of year.

Water temperature: July 14, 51.0°F at river mile 15.3, and 53.8°F at the river mile 8.6 king sonar station.

Summary of cumulative raw information collected thru Jul 21 (by year) that is used to assess Kenai River king salmon run strength.
Year Number Chinook Captured in Test Net at Sonar Station Number Sockeye Captured in Test Net at Sonar Station Chinook Sport Harvest Below Soldotna Estimated by Creel Survey Cumulative DIDSON Sonar Estimate Cumulative Net Apportioned Sonar Estimate Commercial Set Net Harvest
2002 692 1,598 8,311 N/A 37,737 6,398
2003 1,030 955 9,590 N/A 59,549 11,666
2004 632 422 9,687 N/A 69,780 11,278
2005 641 553 8,880 N/A 95,071 10,477
2006 540 351 7,336 N/A 38,235 6,063
2007 440 1,109 5,202 N/A 23,793 6,947
2008 319 1,067 4,313 N/A 13,546 5,235
2009 369 1,347 5,479 N/A 18,380 3,982
2010 179 2,029 2,561 12,146 8,160 3,498
2011 331 1,863 4,664 17,545 19,370 4,988
2012 105 2,501 102 9,474 7,247 422
2013 98 1,275 1,335 7,959 11,581 2,305
2014 142 3,353 539 6,843 5,837 1,045

NOTE: N/A means that there is no fishery for that date, and an asterisk (*) means that there is no data for that date.