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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 - 12,051 17,028 28,021 26,928  
Aug-14 - 12,051 16,895 27,848 26,928  
Aug-13 - 12,051 16,590 27,435 26,928  
Aug-12 - 12,051 16,316 26,963 26,928  
Aug-11 - 12,051 16,120 26,343 26,928  
Aug-10 - 12,051 15,906 25,556 26,928  
Aug-09 - 12,051 15,682 24,448 26,762  
Aug-08 - 12,051 15,493 23,571 26,354  
Aug-07 - 12,051 15,324 22,798 26,131  
Aug-06 - 12,051 15,131 21,561 25,873  
Aug-05 - 12,051 14,880 20,826 25,328  
Aug-04 - 12,051 14,605 20,456 24,817  
Aug-03 - 12,051 14,230 19,791 24,681  
Aug-02 - 12,051 13,813 19,045 24,485  
Aug-01 - 12,051 13,529 18,283 24,328  
Jul-31 - 12,051 13,023 17,422 23,978  
Jul-30 - 12,051 12,423 16,320 23,269  
Jul-29 827 12,051 11,746 15,594 22,879  
Jul-28 567 11,224 10,943 14,752 22,536  
Jul-27 252 10,657 10,503 13,629 22,308  
Jul-26 526 10,405 10,032 12,528 21,844  
Jul-25 914 9,879 9,365 11,596 21,269  
Jul-24 942 8,965 8,948 10,970 20,322  
Jul-23 717 8,023 8,678 10,363 19,433  
Jul-22 463 7,306 8,291 10,081 18,450  
Jul-21 371 6,843 7,954 9,445 17,545  
Jul-20 1,014 6,472 7,743 8,927 16,347  
Jul-19 887 5,458 7,497 8,096 15,449  
Jul-18 611 4,571 7,090 7,650 14,353  
Jul-17 502 3,960 6,401 6,929 13,178  
Jul-16 250 3,458 5,733 5,645 11,281  
Jul-15 202 3,208 4,985 5,133 10,456  
Jul-14 170 3,006 4,441 4,809 9,515  
Jul-13 262 2,836 3,513 3,998 7,998  
Jul-12 218 2,574 2,974 3,144 6,789  
Jul-11 234 2,356 2,709 2,639 6,122  
Jul-10 196 2,122 2,253 2,095 5,796  
Jul-09 218 1,926 1,722 1,450 5,126  
Jul-08 184 1,708 1,365 1,130 4,668  
Jul-07 366 1,524 1,196 962 4,025  
Jul-06 320 1,158 1,032 807 2,952  
Jul-05 269 838 900 680 2,442  
Jul-04 90 569 695 605 1,970  
Jul-03 180 479 523 508 1,569  
Jul-02 151 299 360 351 1,136  
Jul-01 148 148 174 210 479  

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 4,428 4,997 6,685 12,352
Jul-24 4,916 5,159 7,076 13,076
Jul-25 5,453 5,400 7,525 13,801
Jul-26 5,773 5,768 8,030 14,224
Jul-27 5,954 6,046 8,740 14,508
Jul-28 6,310 6,330 9,457 14,665
Jul-29 6,823 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 29

King salmon run update: 

On July 28 the daily estimated passage was 567 king salmon for a season total of 11,224 king salmon.

The department issued an emergency order that closes the late-run king salmon fishery effective Saturday, July 26th through the remainder of July. Using average run timing approximately 68% of the run is completed at this time. Without continued current rates of passage the sustainable escapement goal of 15,000-30,000 fish may not be achieved.

The next regular update is planned for Friday, August 1st.

Fishery Update:

Starting July 26, fishing for king salmon is closed with additional restrictions found in the emergency orders below:

The emergency orders can be found at the following links:

http://www.adfg.alaska.gov/Static-sf/EONR/PDFs/2014/R2/EO-2-KS-1-42-14_Close%20LRKenaiKing%20FINAL.pdf
http://www.adfg.alaska.gov/Static-sf/EONR/PDFs/2014/R2/EO-2-KS-1-26-14%20LRKenaiKing%20No%20Bait.pdf

The news release can be found at the following link:

http://www.adfg.alaska.gov/sf/EONR/index.cfm?ADFG=region.NR&NRID=2000

Fishing effort and catch rates improved over the 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: Excellent above tidal influence; last visibility reading 1.0 meters at the river mile 8.6 sonar station.

Water flow/current: 12,200 ft3/sec today vs. 49 yr median (14,400 ft3/sec). Water level is well below the average of 14,500 ft3/sec for this time of year.

Water temperature: July 14, 55.3°F at the river mile 8.6 king sonar station.

Summary of cumulative raw information collected thru Jul 28 (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 948 1,838 10,822 N/A 54,699 8,549
2003 1,282 1,207 12,262 N/A 85,072 13,395
2004 845 656 12,850 N/A 89,591 16,960
2005 811 644 12,876 N/A 110,279 16,097
2006 811 468 11,846 N/A 55,512 6,152
2007 589 1,638 8,351 N/A 38,643 9,011
2008 493 1,281 7,436 N/A 32,262 6,409
2009 438 1,676 6,606 N/A 21,665 4,834
2010 231 2,954 4,578 17,249 11,199 5,258
2011 392 2,740 6,026 22,535 24,637 6,213
2012 172 3,309 102 14,782 10,335 422
2013 131 1,710 1,577 10,948 13,486 2,630
2014 209 3,890 539 11,224 10,322 1,316

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