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.
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 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 Operational Plan Yentna River Chinook Salmon Sampling and Lake Creek Chinook Salmon Sonar Assessment 2023 2025 written by Nicholas A. Decovich and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study will conduct a sonar count of the Yentna River drainage Chinook salmon (Oncorhynchus tshawytscha) run to Lake Creek and collect age data from the greater Yentna River run with fish wheels at river mile (RM) 6. Radio tags deployed at RM 6 will measure the proportion of the Yentna River run returning to Lake Creek. Data from this project will be incorporated into a run reconstruction model and spawner–recruit analysis to enable a better estimate of the run and escapement to the Yentna River.
Download or read book Operational Plan Kenai River Chinook Salmon Creel Survey and Inriver Netting Study 2021 2023 written by Eric Wood and published by . This book was released on 2022 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: A creel survey will be conducted to estimate sport angler effort, catch, and harvest of large (≥75 cm mid eye to tail fork length) early- and late-run Chinook salmon in the lower Kenai River between the Warren Ames Bridge (river mile [RM] 5.1) and Slikok Creek sanctuary area (RM 18.6). Creel survey estimates will be geographically stratified in relation to the RM 13.7 Kenai River Chinook salmon sonar to provide angler effort, catch, and harvest of large Chinook salmon. A standardized inriver netting project will be conducted in the Kenai River at RM 8.6 to index abundance and estimate the age, sex, and length (ASL) composition of large early- and late-run Chinook salmon. Inseason estimates of Chinook salmon catch and harvest, used in conjunction with sonar passage estimates, inseason catch rates, and the length of returning Chinook salmon from the inriver netting study are used by fisheries managers for inseason management decisions to achieve escapement goals. This plan covers the creel survey and inriver netting studies for the 2021–2023 seasons.
Download or read book Operational Plan Sockeye Salmon Escapement Studies at the Russian River 2023 2026 written by Jenny L. Gates and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Russian River sockeye salmon escapement assessment project, which began in 1962, is one of the oldest stock assessment projects in the state of Alaska. During 2023–2026, the Russian River weir will be operated annually from early June through the first 7 to 10 days of September. All species of fish seen passing the weir through the fish chute will be enumerated daily. Sampling of sockeye salmon for age, sex, and length data will be done each Friday, and the sample size each week will be based on the previous week’s fish passage. Sockeye and Chinook salmon spawning downstream of the Russian River weir to the confluence of the Russian River and the Kenai River will be assessed by a foot survey during the fourth week of August. Multiple foot surveys will also be conducted from mid-May to 10 June to assess spawning rainbow trout.
Download or read book Kenai and Kasilof River Sockeye Salmon Inriver Passage and Escapement Studies 2022 2024 written by William J. Glick and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual-frequency Identification Sonar (DIDSON; Belcher et al. 2002) is used annually to estimate sockeye salmon Oncorhynchus nerka passage into the Kenai River of Upper Cook Inlet (UCI), Alaska (Figure 1). Adaptive Resolution Imaging Sonar (ARIS) is used to estimate sockeye salmon passage into the Kasilof River. Both multi-beam sonar systems are manufactured by Sound Metrics Corporation with ARIS being an upgraded replacement of the DIDSON. Sonar passage estimates of sockeye salmon are used for inseason management of UCI commercial fisheries, as well as personal use fisheries in the Kenai and Kasilof rivers, to achieve established escapement goals and inriver run goals. The current sustainable escapement goal (SEG) for sockeye salmon in the Kenai River is 750,000–1,300,000 fish. The inriver goal for sockeye salmon in the Kenai River is 1,000,000–1,200,000 fish if the forecasted return estimate is 2,300,000; 1,100,000–1,400,000 fish for a forecasted return of 2,300,000–4,600,000; and 1,200,000–1,600,000 fish for a forecasted return of 4,600,000 (Marston and Frothingham In prep). The Kasilof River optimal escapement goal (OEG) is 140,000–370,000 sockeye salmon, with a biological escapement goal (BEG) of 140,000–320,000. (McKinley et al. 2020). Fish wheels are used to capture migrating salmon for 1) species apportionment; 2) to estimate age, length, and sex composition of the sockeye salmon escapement; and, 3) to collect genetic samples as needed. Historical sonar passage and escapement data for the Kenai and Kasilof rivers (Table 1) is provided in yearly Regional Information and Fishery Data Series reports as exhibited by Glick and Marston (In prep). This plan outlines how sonar sampling and logistical operations will be conducted for each of these sonar enumeration sites.
Download or read book Evaluation of Hydroacoustic Assessment Techniques for Chinook Salmon on the Kenai River Using Split beam Sonar written by Debby L. Burwen and published by . This book was released on 1995 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operational Plan written by Holly I. Dickson and published by . This book was released on 2020 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2020-2024, Chinook salmon (Oncorhynchus tshawytscha) will be enumerated at 2 Anchor River sites from mid-May through early August to monitor escapement for the drainage. The south fork site, located at approximately river kilometer (RKM) 4.0, will be monitored by an Adaptive Resolution Imaging Sonar (ARIS) during high flow periods, and a resistance board weir fitted with underwater video will be used thereafter. The north fork site, located at about RKM 5.3, will be monitored by a resistance board weir with underwater video from the beginning of the Chinook salmon run in early May. Motion-detection technology will be used at each weir to record fish passage 24 hours per day. Weekly beach seine surveys will be used to capture Chinook salmon for age-sex-length (ASL) samples downstream of the confluence of the south and north forks. Chinook salmon data will be used to update estimates of the spawner-recruit relationship and harvest rate, and to provide inseason run information to managers. Coho salmon and steelhead will also be monitored in the fall of each year using the resistance board weir and video system on each fork. Coho salmon age, sex, and length will be collected via beach seining. Coho salmon escapement and harvest rate will be estimated along with an index of steelhead abundance and catch rate.
Download or read book Operational Plan Little Susitna River Salmon Weir 2021 2025 written by Daryl Lescanec and published by . This book was released on 2022 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project will assess weir passage and age and sex structure of Chinook and coho salmon runs in the Little Susitna River. The information collected during this project will allow for inseason management of these runs and provide long-term data for escapement goal analysis. A resistance-board weir will be operated at river mile 32.5 of the Little Susitna River to count Chinook and coho salmon, as well as other species present. A subset of Chinook and coho salmon passing the weir will be trapped and sampled for sex, length, and age (Chinook salmon only) data. Water level, temperature, and clarity, number of boats passing, and angler interviews will also be recorded.
Download or read book Kenai River Chinook Salmon Abundance and Migratory Timing written by Adam M. Reimer and published by . This book was released on 2013 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this research is to provide an estimate of Chinook salmon abundance entering the Kenai River that is independent of existing sonar programs. These estimates of abundance will be used, in conjunction with sonar based estimates of abundance to develop escapement goals for Kenai River Chinook salmon. A secondary purpose of this research is to monitor Chinook salmon migration within the Kenai River drainage for the purpose of informing management decisions with respect to time and area.
Download or read book Operational Plan Kenai River Coho Salmon Radiotelemetry 2023 2024 written by Anthony Alexander Eskelin and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study will describe the geographic spawning distribution of radiotagged coho salmon in the Kenai River drainage for 2 years (2023 and 2024). Drift gillnets will be employed in the Kenai River to capture and tag adult coho salmon with radio transmitters. Radiotelemetry will be used to uniquely identify and track tagged coho salmon to spawning destinations. Up to 490 radio transmitters will be deployed annually between August 1 and October 31 each year. Movements of radiotagged coho salmon will be documented using a combination of fixed data-logging receiver stations and mobile tracking using boats and fixed-wing aircraft. This project will be the 2nd and 3rd year of a 3-year collaboration between the Alaska Department of Fish and Game (ADF&G) and the U.S. Fish and Wildlife Service (USFWS). The USFWS conducted the first year of the project in 2022, and ADF&G and USFWS will be collaborating on the radiotelemetry project in 2023 and 2024.
Download or read book Operational Plan Situk River Chinook Salmon Creel Survey 2023 2024 written by Jason A. Pawluk and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project is to determine Chinook salmon Oncorhynchus tshawytscha harvest by sport anglers on the Situk River and the age components of that harvest. Additionally, sockeye salmon Oncorhynchus nerka harvest will be determined and various methods of angler use patterns for both species will be recorded. Creel sampling techniques will be used to collect catch, harvest, effort and biological information from the Situk River for this purpose. This information is used to manage for the Chinook salmon biological escapement goal for the Situk River as per the Situk-Ahrnklin and Lost River Chinook salmon Management Plan, along with achieving the Situk River sockeye salmon biological escapement goal. Inriver abundance for both Situk River Chinook and sockeye is obtained from another project with a fish weir, and escapement is calculated by subtracting the above-weir sport harvest estimate of this project from that weir count. Additionally, the Chinook salmon age component information of the harvest gathered here is required for yearly stock assessment models to predict the following years run and set preseason management regulations.
Download or read book Operational Plan Crooked Creek Chinook Salmon Enhancement Project 2022 2024 written by Jenny L. Gates and published by . This book was released on 2022 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Crooked Creek Chinook Salmon Enhancement Project is designed to monitor both naturally- and hatchery-produced Chinook salmon (Oncorhynchus tshawytscha) escapement as well as collect broodstock and conduct egg takes to provide additional sport fishing opportunities within the Kasilof River and other terminal fisheries on the Kenai Peninsula. This project will imprint Chinook salmon smolt for 7 to 10 days at the beginning of June. Additionally, age, sex, and length, will be collected from returning naturally- and hatchery-produced Chinook salmon. The sustainable escapement goal for Crooked Creek is 700–1,400 naturally-produced Chinook salmon.
Download or read book Investigations of Alternate Sites for Chinook Salmon Sonar on the Kenai River written by Debby L. Burwen and published by . This book was released on 2000 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operational Plan Yentna River Chinook Salmon Sampling and Lake Creek Chinook Salmon Sonar Assessment 2022 written by Nicholas A. Decovich and published by . This book was released on 2022 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study will conduct a sonar count of the Yentna River drainage Chinook salmon (Oncorhynchus tshawytscha) run to Lake Creek and collect age data from the greater Yentna River run with fishwheels at river mile (RM) 6. Radio tags deployed at RM 6 will be used to estimate the proportion of the Yenta River run returning to Lake Creek. Data from this project will be incorporated into a run reconstruction model and spawner–recruit analysis to enable a better estimate of the historic run and escapement to the Yentna River.
Download or read book Kenai River Chinook Salmon Management Plans written by Alaska. Board of Fisheries and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
