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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 (Chinook)
Species: Chinook - Late Run
Method: Sonar

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

  • 2015
  • 2014
  • 2013
Daily Counts
Cumulative

Description: Beginning in 2015 the department will be managing Kenai Chinook runs using the ARIS sonar located at river mile 14, instead of the DIDSON sonar located at river mile 8.6. The 2013 and 2014 data provided below are ARIS sonar estimates from rm 14. The ARIS sonar estimates will be updated twice weekly. The daily estimates represent Chinook salmon of all age and size classes. This ARIS sonar estimate is used to measure total run abundance relative to the optimum escapement goal of 5,300-9,000 early-run Chinook salmon and the sustainable escapement goal of 15,000-30,000 late-run Chinook salmon. To view daily estimates about Chinook salmon passage go to the Abundance Indices tab, which is updated as data becomes available. The inseason run summary tab will provide information about Chinook salmon passage at the mile 14 ARIS 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

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

Date
2015
Count
2015
Cumulative
2015
Cumulative
2014
Cumulative
2013
Notes for
2015
Aug-20 163 23,705 14,134 16,645  
Aug-19 137 23,542 14,134 16,645  
Aug-18 299 23,405 14,134 16,645  
Aug-17 272 23,106 14,134 16,645  
Aug-16 146 22,834 14,134 16,428  
Aug-15 236 22,688 14,134 16,226  
Aug-14 282 22,452 13,949 15,976  
Aug-13 385 22,170 13,717 15,648  
Aug-12 171 21,785 13,594 15,367  
Aug-11 190 21,614 13,400 15,185  
Aug-10 539 21,424 13,169 14,928  
Aug-09 450 20,885 12,836 14,568  
Aug-08 493 20,435 12,295 14,156  
Aug-07 446 19,942 12,041 13,611  
Aug-06 738 19,496 11,801 13,354  
Aug-05 623 18,758 11,194 12,996  
Aug-04 513 18,135 10,562 12,534  
Aug-03 443 17,622 10,115 12,067  
Aug-02 367 17,179 9,580 11,470  
Aug-01 190 16,812 9,188 10,899  
Jul-31 269 16,622 8,743 10,330  
Jul-30 419 16,353 8,069 9,749  
Jul-29 413 15,934 7,519 9,230  
Jul-28 439 15,521 7,096 8,749  
Jul-27 465 15,082 6,698 8,343  
Jul-26 633 14,617 6,353 7,997  
Jul-25 754 13,984 5,991 7,444  
Jul-24 1,209 13,230 5,574 7,077  
Jul-23 942 12,021 5,371 6,867  
Jul-22 790 11,079 5,030 6,470  
Jul-21 567 10,289 4,772 6,252  
Jul-20 438 9,722 4,363 6,081  
Jul-19 489 9,284 3,917 5,652  
Jul-18 828 8,795 3,588 5,245  
Jul-17 1,018 7,967 3,082 4,607  
Jul-16 500 6,949 2,751 4,113  
Jul-15 513 6,449 2,579 3,349  
Jul-14 498 5,936 2,222 2,835  
Jul-13 493 5,438 2,025 2,345  
Jul-12 750 4,945 1,811 2,014  
Jul-11 655 4,195 1,543 1,825  
Jul-10 665 3,540 1,374 1,499  
Jul-09 492 2,875 1,299 1,227  
Jul-08 375 2,383 1,199 971  
Jul-07 334 2,008 1,032 886  
Jul-06 225 1,674 715 781  
Jul-05 358 1,449 455 648  
Jul-04 288 1,091 283 519  
Jul-03 265 803 178 353  
Jul-02 352 538 154 251  
Jul-01 186 186 88 166 First Day of Late-Run Sonar Estimates

Sonar Tools

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

The ARIS threshold estimate is an estimate for fish targets that are measured to be 750 millimeters (30 inches) or greater in METF length. These estimates are a daily index of the relative abundance of Chinook salmon passage past the mile 14 ARIS sonar site.

Show ARIS Threshold Data Table ↓

Date 2015 2014 2013
Jun-20 - - -
Jun-21 - - -
Jun-22 - - -
Jun-23 - - -
Jun-24 - - -
Jun-25 - - -
Jun-26 - - -
Jun-27 - - -
Jun-28 - - -
Jun-29 - - -
Jun-30 - - -
Jul-01 79 36 127
Jul-02 230 66 187
Jul-03 321 78 247
Jul-04 498 138 359
Jul-05 669 229 438
Jul-06 790 405 517
Jul-07 966 587 574
Jul-08 1,227 678 660
Jul-09 1,533 738 846
Jul-10 1,887 786 1,034
Jul-11 2,141 871 1,246
Jul-12 2,455 1,027 1,368
Jul-13 2,739 1,166 1,573
Jul-14 3,041 1,281 1,881
Jul-15 3,349 1,503 2,202
Jul-16 3,651 1,618 2,681
Jul-17 4,128 1,835 2,989
Jul-18 4,653 2,149 3,415
Jul-19 5,033 2,510 3,712
Jul-20 5,353 2,830 4,027
Jul-21 5,836 3,192 4,148
Jul-22 6,483 3,374 4,299
Jul-23 7,305 3,629 4,542
Jul-24 8,331 3,756 4,687
Jul-25 8,935 4,076 4,955
Jul-26 9,484 4,382 5,294
Jul-27 9,876 4,657 5,548
Jul-28 10,251 4,977 5,856
Jul-29 10,584 5,327 6,255
Jul-30 10,922 5,768 6,684
Jul-31 11,161 6,305 7,155
Aug-01 11,324 6,641 7,630
Aug-02 11,626 6,955 8,126
Aug-03 12,018 7,394 8,639
Aug-04 12,470 7,762 9,033
Aug-05 13,062 8,338 9,451
Aug-06 13,768 8,912 9,763
Aug-07 14,197 9,129 9,994
Aug-08 14,680 9,358 10,477
Aug-09 15,103 9,865 10,819
Aug-10 15,623 10,173 11,132
Aug-11 15,804 10,378 11,359
Aug-12 15,972 10,564 11,526
Aug-13 16,323 10,670 11,768
Aug-14 16,595 10,894 12,065
Aug-15 16,807 11,057 12,286
Aug-16 16,945 11,057 12,456
Aug-17 17,175 11,057 12,656

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 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. Aug 4

Chinook Salmon Run Update:

On August 4, the daily estimated passage was 513 Chinook salmon for a season total of 17,623 Chinook salmon. Based on the previous two years using the ARIS sonar, 75% of the run passed the sonar site at river mile 14 through August 4. Projections of the inriver run have been declining steadily for the past eleven days. Lower than expected passage rates occurred over the weekend which significantly dropped projections at a rate quicker than expected. Based on the current passage rates of king salmon into the river the department is projecting an end of season escapement less than 22,500 fish.

The escapement goal range for Kenai River Chinook salmon is 15,000 – 30,000 fish. As of approximately July 30th, the minimum escapement of 15,000 late-run Kenai River Chinook salmon was estimated to have been achieved.

The final Kenai River late-run Chinook salmon update is planned to be released at the end of August. Sonar estimates along with other indices will continue to be updated on the departments fish count website until the end of project operations.

Fishery Update:

The last day of sport fishing for Chinook salmon was Friday, July 31st. Chinook salmon captured in the netting program this weekend were primarily older, larger Chinook salmon.
Preliminary season estimates of effort, catch, and harvest by angler type and fishing location relative to the Chinook sonar site at RM 13.7 based upon creel survey are as follows:

Below Sonar:
Guided Anglers: 17,473 angler hours; Catch = 1,701; Harvest = 1,285; Catch-and-release mortality = 32
Unguided Anglers: 21,094 angler hours; Catch = 1,325; Harvest = 788; Catch-and-release mortality = 41
Subtotal Below sonar: 38,567 angler hours; Catch = 3,027; Harvest = 2,073; Catch-and-release mortality = 73

Above Sonar:
Guided Anglers: 20,746 angler hours; Catch = 1,808; Harvest = 1,162; Catch-and-release mortality = 49
Unguided Anglers: 17,963 angler hours; Catch = 1,687; Harvest = 661; Catch-and-release mortality = 78
Subtotal above sonar: 38,709 angler hours; Catch = 3,495; Harvest = 1,823; Catch-and-release mortality = 127

Total Inriver: 77,277 angler hours; Catch = 6,522; Harvest = 3,896; Catch-and-release mortality = 200

The preseason outlook for the 2015 Kenai River late-run can be found at:

http://www.adfg.alaska.gov/static/regulations/regprocess/fisheriesboard/pdfs/2014-2015/uci/rc3_tab5_uci1.pdf

Summary of cumulative raw information collected thru Aug 3 (by year) that is used to assess Kenai River Chinook run strength.
Year Number Chinook Captured in Test Net at river mile 8.6 Number Sockeye Captured in Test Net at river mile 8.6 Chinook Sport Harvest Below Soldotna Estimated by Creel Survey Cumulative ARIS Sonar Estimate Commercial Set Net Harvest
2002 1,140 1,899 11,482 N/A 9,280
2003 1,374 1,391 13,837 N/A 14,487
2004 933 707 14,494 N/A 20,085
2005 950 708 15,312 N/A 18,992
2006 1,018 503 13,190 N/A 7,493
2007 697 1,828 9,258 N/A 10,969
2008 677 1,413 9,272 N/A 6,409
2009 512 1,755 7,378 N/A 5,317
2010 277 3,331 5,375 N/A 6,388
2011 441 3,177 6,458 N/A 7,205
2012 240 3,583 102 N/A 422
2013 165 1,911 1,577 12,065 2,630
2014 173 3,851 539 10,116 1,635
2015 194 929 3,896 17,623 6,066

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