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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 - Early 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
Jun-30 183 5,311 2,041 5,173 10,100  
Jun-29 67 5,128 1,866 4,913 9,503  
Jun-28 50 5,061 1,692 4,738 9,146  
Jun-27 60 5,011 1,585 4,606 8,885  
Jun-26 121 4,951 1,520 4,453 8,787  
Jun-25 129 4,830 1,450 4,365 8,605  
Jun-24 116 4,701 1,386 4,270 8,123  
Jun-23 152 4,585 1,343 4,217 7,795  
Jun-22 96 4,433 1,298 4,090 7,301  
Jun-21 144 4,337 1,224 3,994 6,977  
Jun-20 198 4,193 1,139 3,890 6,643  
Jun-19 93 3,995 1,108 3,713 6,307  
Jun-18 203 3,902 1,040 3,575 5,899  
Jun-17 166 3,699 1,028 3,414 5,507  
Jun-16 141 3,533 972 3,307 5,218  
Jun-15 141 3,392 916 3,180 4,942  
Jun-14 81 3,251 876 3,008 4,646  
Jun-13 174 3,170 798 2,910 4,325  
Jun-12 381 2,996 713 2,752 3,949  
Jun-11 245 2,615 679 2,561 3,816  
Jun-10 122 2,370 646 2,460 3,607  
Jun-09 321 2,248 612 2,243 3,264  
Jun-08 105 1,927 576 2,037 3,063  
Jun-07 71 1,822 471 1,890 2,820  
Jun-06 332 1,751 440 1,803 2,669  
Jun-05 301 1,419 421 1,685 2,273  
Jun-04 409 1,118 384 1,589 1,982  
Jun-03 248 709 373 1,454 1,841  
Jun-02 31 461 345 1,311 1,733  
Jun-01 39 430 316 1,161 1,673  
May-31 50 391 268 1,043 1,617  
May-30 68 341 263 947 1,462  
May-29 28 273 247 842 1,272  
May-28 28 245 242 795 1,108  
May-27 28 217 237 626 950  
May-26 48 189 232 578 838  
May-25 22 141 218 502 711  
May-24 8 119 185 438 476  
May-23 14 111 149 374 348  
May-22 5 97 109 265 207  
May-21 23 92 58 231 121  
May-20 31 69 38 192 81  
May-19 20 38 22 144 75  
May-18 3 18 20 86 62  
May-17 9 15 9 61 48  
May-16 6 6 0 24 34 First Day of Counts

Sonar Tools

Early 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
May-16 - 0 12 27
May-17 - 6 36 34
May-18 - 12 48 41
May-19 - 18 84 47
May-20 - 30 114 53
May-21 - 42 134 83
May-22 - 78 152 155
May-23 - 102 237 240
May-24 - 131 268 312
May-25 - 144 298 445
May-26 - 150 342 511
May-27 - 150 366 565
May-28 - 150 463 662
May-29 - 156 545 740
May-30 - 168 593 831
May-31 - 168 635 909
Jun-01 - 191 692 940
Jun-02 - 209 776 964
Jun-03 - 221 848 1,018
Jun-04 - 227 920 1,096
Jun-05 - 245 968 1,235
Jun-06 - 257 1,022 1,458
Jun-07 - 269 1,064 1,585
Jun-08 - 311 1,142 1,845
Jun-09 - 329 1,230 1,930
Jun-10 - 341 1,333 2,075
Jun-11 - 353 1,387 2,160
Jun-12 - 365 1,471 2,214
Jun-13 - 401 1,549 2,371
Jun-14 - 437 1,597 2,504
Jun-15 - 455 1,675 2,626
Jun-16 - 479 1,766 2,771
Jun-17 - 503 1,808 2,904
Jun-18 - 515 1,874 3,055
Jun-19 - 541 1,940 3,248
Jun-20 - 561 2,019 3,393
Jun-21 - 597 2,061 3,556
Jun-22 - 633 2,103 3,707
Jun-23 - 651 2,157 3,967
Jun-24 - 675 2,175 4,130
Jun-25 - 776 2,207 4,390
Jun-26 - 818 2,243 4,481
Jun-27 - 848 2,321 4,528
Jun-28 - 902 2,375 4,655
Jun-29 - 992 2,447 4,836
Jun-30 - 1,082 2,556 5,130

Early 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

Early 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. The 2014 netting project is different from the previous years and may not be comparable. In 2014 the amount of time spent netting doubled and some netting is also being conducted nearshore


Early 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.

Weekly Sportfish Fishing Report for this area


Final Early Run Kenai River Chinook Inseason Summary

King salmon run update: 

On June 30 the daily estimated passage was 174 king salmon for a season total of 2,038 king salmon. Through June 30 the cumulative values for all four indices of king salmon abundance were the lowest on record. Given the unprecedented low run, an emergency order was issued Tuesday, June 18 closing the Kenai River to king salmon fishing on June 20 for the remainder of June and, for the Kenai River above the lower Slikok Creek sanctuary markers, until July 14.

Based on the low abundance of the Kenai River early-run king salmon stock, the late-run king salmon fishery began July 1 without the use of bait. Prohibiting use of bait during July is intended to reduce harvest of both early- and late-run stocks. The department has issued the following emergency orders:

From 12:01 a.m., Thursday, June 20, through 11:59 p.m., Sunday, June 30, 2013:

In the Kenai River, from the mouth upstream to Skilak Lake, and in the Moose River from its confluence with the Kenai River upstream to the northernmost edge of the Sterling Highway Bridge, king salmon fishing is closed, and no king salmon of any size may be retained. Any king salmon caught while fishing for other species may not be removed from the water, and must be released immediately.


From 12:01 a.m., Monday, July 1, through 11:59 p.m., Sunday, July 14, 2013:

In the Kenai River, from ADF&G regulatory markers located approximately 300 yards downstream from the mouth of Slikok Creek, upstream to the outlet of Skilak Lake, and in the Moose River from its confluence with the Kenai River upstream to the northernmost edge of the Sterling Highway bridge, king salmon fishing is closed, and no king salmon of any size may be retained. Any king salmon caught while fishing for other species may not be removed from the water, and must be released immediately.

From 12:01 a.m., Monday, July 1, through 11:59 p.m., Sunday, July 31, 2013:

In the Kenai River drainage, from the mouth upstream to Skilak Lake, and in the Moose River from its confluence with the Kenai River upstream to the northernmost edge of the Sterling Highway Bridge, only one unbaited, single-hook, artificial lure is allowed. The use of bait/scent is not allowed.

The news releases and emergency orders can be found at the following links:

http://www.adfg.alaska.gov/index.cfm?adfg=fishingSportFishingInfo.NR&NRID=1797&year=2013

http://www.adfg.alaska.gov/static-sf/EONR/PDFs/2013/R2/EO-2-KS-1-22-13%20Close%20ERKenaiKing_Final.pdf

http://www.adfg.alaska.gov/index.cfm?adfg=fishingSportFishingInfo.NR&NRID=1802&year=2013

The first late-run update will be on Friday, July 5.

Fishery Update:

The king salmon sport fishery closed at 11:59 p.m., Wednesday, June 19. Fishing effort and catch rates remained unusually low when the river was open to fishing. From May 16 through June 19 the total catch of king salmon below the Soldotna Bridge estimated by creel survey was a total of 40 fish. Harvest was not allowed due to the catch and release emergency order.


Water Conditions:

Water clarity: Fair; last visibility readings 0.7 meters at river mile 15.3, and 0.7 meters at the river mile 8.6 sonar station.

Water flow/current: Stable 15,100 ft3/sec today vs 48 yr median (11,700 ft3 / sec). Water is higher than average.

Water temperature: June 30 at sonar station 50° F.

Summary of cumulative raw information collected thru Jul 1 (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 369 662 376 * 9,013 N/A
2003 874 840 1,948 * 18,616 N/A
2004 448 460 2,285 * 26,468 N/A
2005 471 1,560 2,876 * 18,139 N/A
2006 304 1,417 3,397 * 10,955 N/A
2007 266 1,167 2,645 * 6,641 N/A
2008 205 1,033 2,602 * 7,091 N/A
2009 167 931 2,023 * 4,168 N/A
2010 164 1,125 837 7,738 3,732 N/A
2011 221 1,688 816 10,099 6,836 N/A
2012 105 953 316 5,171 2,786 N/A
2013 55 555 0 2,038 2,190 N/A

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