Download or read book Estimates of Chinook Salmon Passage in the Kenai River at River Mile 8 6 Using Dual frequency Identification Sonar 2012 written by James D. Miller and published by . This book was released on 2015 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated in 2012 using dual-frequency identification sonar (DIDSON). Estimates of midriver Chinook salmon passage between and at least 3 m from the transducers were 3,228 (SE 191) fish for the early run (16 May-30 June) and 21,613 (SE 667) fish for the late run (1 July-15 August). DIDSON units temporarily deployed shoreward of the left and right bank transducers recorded large Chinook salmon (equal to or greater than 75 cm) migrating outside the standard insonified zone. The efficacy of installing sonar at river mile 13.7 was investigated and confirmed.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River at River Mile 8 6 Using Dual frequency Identification Sonar 2013 written by Brandon H. Key and published by . This book was released on 2016 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated in 2013 at RM 8.6 using dual-frequency identification sonar (DIDSON). Estimates of midriver Chinook salmon passage between and at least 3 m from the transducers were 1,439 (SE 138) fish for the early run (16 May-30 June) and 15,185 (SE 566) fish for the late run (1 July-15 August). The early-run estimate is too small to explain weir counts at upriver tributaries. Methods and results from a second experimental sonar site located above tidal influence at RM 13.7 are presented in a separate report.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River at River Mile 8 6 Using Dual frequency Identification Sonar 2014 written by Brandon H. Key and published by . This book was released on 2016 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated in 2014 at RM 8.6 using dual-frequency identification sonar (DIDSON). Estimates of midriver Chinook salmon passage between and at least 3 m from the transducers were 4,862 (SE 338) fish for the early run (16 May-30 June) and 13,952 (SE 492) fish for the late run (1 July-15 August). Methods and result from a second experimental sonar site located above tidal influence at RM 13.7 are presented in a separate report.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River Using Split beam and Dual frequency Identification Sonars 2011 written by James D. Miller and published by . This book was released on 2014 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses the results of estimating chinook salmon (Oncorhynchus tshawytscha) abundance in the Kenai River May-June and July-August 2011, using split-beam sonar and experimental dual-frequency identification sonar (DIDSON) technology.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River Using Split beam and Dual frequency Identification Sonars 2010 written by James D. Miller and published by . This book was released on 2013 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses the results of estimating chinook salmon (Oncorhynchus tshawytscha) abundance in the Kenai River May-June and July-August 2010, using split-beam sonar and experimental dual-frequency identification sonar (DIDSON) technology.

Download or read book Chinook Salmon Passage in the Kenai River at River Mile 13 7 Using Adaptive Resolution Imaging Sonar 2013 written by James D. Miller and published by . This book was released on 2016 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2013, Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated using Adaptive Resolution Imaging Sonar (ARIS) at a newly established site at river mile 13.7. Medium and large Chinook salmon (greater than or equal to 75 cm as measured by ARIS) were directly assessed by the sonar, yielding net upstream passage estimates of 1,724 (SE 93) during the early run (17 May-30 June) and 12,656 (SE 282) during the late run (1 July-17 August). Smaller Chinook salmon (less than 75 cm ARIS length) overlap in size with other species; thus a combination of sonar, netting, telemetry, and weir data from this and other projects are required for assessing the abundance of all Kenai River Chinook salmon regardless of size. During the 2013 early run, telemetry and weir data were used to obtain a net upstream passage estimate of 2,806 (SE 341) small Chinook salmon; this estimate was combined with the ARIS estimate of medium and large Chinook salmon for a total of 4,530 (SE 353) Chinook salmon regardless of size. During the late run, a mixture model was fitted to sonar and netting data to obtain a net upstream passage estimate of 19,373 (SE 583) Chinook salmon regardless of size.

Download or read book Chinook Salmon Passage in the Kenai River at River Mile 13 7 Using Adaptive Resolution Imaging Sonar 2016 written by Brandon H. Key and published by . This book was released on 2019 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2016, Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated using adaptive resolution imaging sonar (ARIS) at river mile 13.7. Net upstream passage of Chinook salmon greater than or equal to 75 cm as measured by ARIS was estimated to be 6,391 (SE 197) during the early run (16 May–30 June) and 17,447 (SE 403) during the late run (1 July–19 August). Net upstream passage of all Chinook salmon regardless of size was estimated to be 9,851 (SE 355) during the early run and 22,537 (SE 480) during the late run.

Download or read book Chinook Salmon Passage in the Kenai River at River Mile 13 7 Using Adaptive Resolution Imaging Sonar 2017 2019 written by Brandon H. Key and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chinook salmon (Oncorhynchus tshawytscha) passage in the Kenai River was estimated from 2017 to 2019 using adaptive resolution imaging sonar (ARIS) at river mile 13.7. Net upstream passage of Chinook salmon greater than or equal to 75 cm as measured each year by ARIS was estimated to be 7,238 (SE = 250), 3,000 (SE = 154), and 4,186 (SE = 160), respectively, during the 2017–2019 early runs (16 May–30 June); and 22,133 (SE = 452), 16,957 (SE = 410), and 11,870 (SE = 310), respectively, during the 2017–2019 late runs (1 July–20 August). Net upstream passage of all Chinook salmon regardless of size was estimated to be 9,696 (SE = 371), 5,390 (SE = 318), and 6,033 (SE = 285), respectively, during the 2017–2019 early runs; and 24,436 (SE = 423), 25,143 (SE = 654), and 18,093 (SE = 547), respectively, during the 2017–2019 late runs.

Download or read book Chinook Salmon Passage in the Kenai River at River Mile 13 7 Using Adaptive Resolution Imaging Sonar 2014 written by James D. Miller and published by . This book was released on 2016 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2014, Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated using Adaptive Resolution Imaging Sonar (ARIS) at river mile 13.7. Net upstream passage of Chinook salmon greater than or equal to 75 cm as measured by ARIS was estimated to be 2,397 (SE 132) during the early run (16 May-30 June) and 10,871 (SE 291) during the late run (1 July-15 August). Net upstream passage of all Chinook salmon regardless of size was estimated to be 5,768 (SE 359) during the early run and 16,871 (SE 580) during the late run.

Download or read book Chinook Salmon Passage in the Kenai River at River Mile 13 7 Using Adaptive Resolution Imaging Sonar 2015 written by Brandon H. Key and published by . This book was released on 2017 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2015, Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated using Adaptive Resolution Imaging Sonar (ARIS) at river mile 13.7. Net upstream passage of Chinook salmon greater than or equal to 75 cm as measured by ARIS was estimated to be 4,212 (SE 168) during the early run (16 May-30 June) and 17,687 (SE 377) during the late run (1 July-20 August). Net upstream passage of all Chinook salmon regardless of size was estimated to be 7,332 (SE 312) during the early run and 28,918 (SE 703) during the late run.

Download or read book Operational Plan written by Brandon H. Key and published by . This book was released on 2020 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alaska Department of Fish and Game (ADF&G) has monitored Chinook salmon (Oncorhynchus tshawytscha) passage in the Kenai River using side-looking sonar technology from 1987 to present. The historical site at RM 8.6 used dual-beam (1987–1994), split-beam (1995–2011), and dual-frequency identification sonar or “DIDSON” (2012–2014) technology. Starting in 2013, ADF&G began operating adaptive resolution imaging sonar or “ARIS” at a new site located at RM 13.7. The RM 8.6 site was discontinued following the 2014 season in favor of data collection at the RM 13.7 site. This plan covers RM 13.7 project operations for the 2020–2022 seasons.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River Using Split beam Sonar 2008 2009 written by James D. Miller and published by . This book was released on 2012 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses the results of estimating chinook salmon, Oncorhynchus tshawytscha, abundance in the Kenai River May-June and July-August 2008 and 2009, using split-beam sonar technology.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River Using Split beam Sonar 2006 written by James D. Miller and published by . This book was released on 2010 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses the results of estimating chinook salmon, Oncorhynchus tshawytscha, abundance in the Kenai River May-June and July-August 2006, using split-beam sonar technology.

Download or read book Estimates of Chinook Salmon Passage in the Kenai River Using Split beam Sonar 2007 written by James D. Miller and published by . This book was released on 2011 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report discusses the results of estimating chinook salmon, Oncorhynchus tshawytscha, abundance in the Kenai River May-June and July-August 2007, using split-beam sonar technology.

Download or read book Amendment Kenai River Chinook Salmon Sonar Assessment at River Mile 13 7 2020 2022 written by Brandon H. Key and published by . This book was released on 2022 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive resolution imaging sonars (ARIS) are used to produce inriver abundance estimates of Kenai River early- and late-run Chinook salmon Onchorhynchus tshawytscha and Kasilof River late-run Chinook salmon. These sonars can be used to produce inseason estimates of fish 75 cm mid eye to tail fork length (METF) or longer, and when used over the entire run, can be used in conjunction with test fish data to produce postseason abundance estimates of all Chinook salmon regardless of size. Sonar estimates of Chinook salmon inriver passage provide the basis for estimating spawning escapement and implementing management plans that regulate harvest in the competing fisheries for these stocks.

Download or read book Migratory Timing and Distribution of Kenai River Chinook Salmon Using Radio Telemetry 2014 2015 written by Tony Eskelin and published by . This book was released on 2017 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The migratory timing and distribution of Kenai River Chinook salmon was examined using radio telemetry for 2014 and 2015. Spawning destinations were determined for 153 Chinook salmon in 2014 and 39 in 2015. Radiotagging data since 2010 are presented with data from 2014 and 2015 when appropriate. Of the Chinook salmon radiotagged during the early run in 2014, 81% (SE 4%) spawned in tributaries (range 72-85% since 2010). Radiotagged tributary-spawning Chinook salmon primarily spawned in the Killey River, Benjamin Creek, and Funny River during all years. Estimated Killey River Chinook salmon escapements based on weir passage and radiotag distribution within the Killey River drainage ranged from 3,564 (SE 500) to 3,934 (SE 627) during 2012-2015. In 2014, all but 2 Chinook salmon radiotagged during the late run (after 30 June) spawned in the mainstem of the Kenai River. The highest proportion of radiotagged mainstem spawners in 2014 were downstream of the Soldotna Bridge at RM 21 (39% SE 6%) and between the Moose River confluence at river mile (RM) 36.3 and Skilak Lake outlet at RM 50 (36% SE 6%). During 2012-2014, an average of 4.0% (SE 1.2%) of assigned mainstem spawning destinations were downstream of the RM 13.7 Chinook salmon sonar. For tributary spawners during 2010-2014, 69% and 95% were in waters with existing closures and restrictions upstream of Slikok Creek on July 1 and July 15, respectively. On 1 July, 23% of tributary spawners were in waters open to fishing upstream of Slikok Creek and 8% were downstream of Slikok Creek. In July, mainstem-spawning Chinook salmon radiotagged in 2012-2014 were primarily (51-59%) in waters open to fishing downstream of Slikok Creek; the rest were upstream: 23-30% in unrestricted waters and 12-20% in closed or restricted waters.

Download or read book Operational Plan Kenai River and Kasilof River Chinook Salmon Sonar Assessment 2023 2025 written by Brandon H. Key and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alaska Department of Fish and Game (ADF&G) has monitored Chinook salmon (Oncorhynchus tshawytscha) passage in the Kenai River using side-looking sonar technology from 1987 to present at historical (1987–2012) and modern (2013–present) sites and with multiple updated sonar technologies. Starting in 2018, a similar sonar program to monitor Chinook salmon at the nearby Kasilof River was begun as well. This plan covers sonar project operations at Kenai RM 13.7 and Kasilof RM 8 for the 2023–2025 seasons with the goal of producing daily inseason net passage estimates of fish 75 cm or longer for the Kenai River and postseason net upstream passage estimates of fish 75 cm or longer for the Kasilof river.