Difference between revisions of "FISHERY"
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[[File:RainbowTroutModel.JPG|center|500px|thumbnail|https://www.usbr.gov/uc/progact/amp/twg/2018-01-25-twg-meeting/AR12.pdf ]] | [[File:RainbowTroutModel.JPG|center|500px|thumbnail|https://www.usbr.gov/uc/progact/amp/twg/2018-01-25-twg-meeting/AR12.pdf ]] | ||
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{| style="width:100%; height:50px" border=1px solid #ccc; background:#cedff2 | {| style="width:100%; height:50px" border=1px solid #ccc; background:#cedff2 | ||
− | ! style="width=50%; background:#cedff2;" | [ | + | ! style="width=50%; background:#cedff2;" | [https://www.azgfd.com/fishing/species/rainbowtrout/ Rainbow Trout] |
− | ! style="width=50%; background:#cedff2;" | [ | + | ! style="width=50%; background:#cedff2;" | [https://www.azgfd.com/fishing/species/browntrout/ Brown Trout] |
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+ | *[http://gcdamp.com/index.php?title=National_Park_Service_Expanded_Non-native_Aquatic_Species_Management_Plan_and_EA 2019 National Park Service Expanded Non-native Aquatic Species Management Plan] | ||
+ | *[[GCDAMP 2016 Fish PEP| 2016 Fish Protocol Evaluation Panel (PEP)]] | ||
+ | *[https://fishaz.azgfd.com/wp-content/uploads/2019/09/Copy-of-Lees-ferry-Fisheries-Managment-plan-final.pdf 2015 State of Arizona Lees Ferry Fish Management Plan] | ||
+ | *[http://gcdamp.com/index.php?title=2013_National_Park_Service_Comprehensive_Fisheries_Management_Plan 2013 National Park Service Comprehensive Fisheries Management Plan] | ||
+ | *[http://gcdamp.com/index.php?title=Portal:GCDAMP_Knowlege_Assessments GCMRC Annual Reports page] | ||
*[http://leesferry.com/ Lees Ferry Anglers / Cliff Dwellers Lodge] | *[http://leesferry.com/ Lees Ferry Anglers / Cliff Dwellers Lodge] | ||
*[[Media:A local perspective on the Lees Ferry trout fishery.docx| A local perspective on the Lees Ferry trout fishery]] by Terry Gunn, owner of Lees Ferry Anglers and Cliff Dwellers Lodge | *[[Media:A local perspective on the Lees Ferry trout fishery.docx| A local perspective on the Lees Ferry trout fishery]] by Terry Gunn, owner of Lees Ferry Anglers and Cliff Dwellers Lodge | ||
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*[http://www.azgfd.gov/w_c/research_managing_lees_ferry.shtml AZGFD: Managing for Blue Ribbon Rainbow Trout at Lee's Ferry] | *[http://www.azgfd.gov/w_c/research_managing_lees_ferry.shtml AZGFD: Managing for Blue Ribbon Rainbow Trout at Lee's Ferry] | ||
*[https://drive.google.com/file/d/0BwY-Z2c3NTUGUmxPbko2dm9URms/view GCDAMP: Lees Ferry Recreational Trout Fishery Management Recommendations] | *[https://drive.google.com/file/d/0BwY-Z2c3NTUGUmxPbko2dm9URms/view GCDAMP: Lees Ferry Recreational Trout Fishery Management Recommendations] | ||
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+ | '''2023''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-11-08-twg-meeting/20231108-Effects2023SpringHFEBalancingFlowsRainbowBrownTroutGlenCanyon-508-UCRO.pdf Effects of the 2023 Spring HFE and Balancing Flows on Rainbow and Brown Trout in Glen Canyon] | ||
+ | *[[Media:Korman et al 2022.pdf| Korman et al. 2023. Drought-related changes in water quality surpass effects of experimental flows on trout growth downstream of Lake Powell reservoir. Can. J. Fish. Aquat. Sci]] | ||
+ | *[https://doi.org/10.1002/tafs.10381 Yard et al., 2023, Declines in prey production during the collapse of a tailwater rainbow trout population are associated with changing reservoir conditions: Transactions of the American Fisheries Society] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-01-26-twg-meeting/20230126-AnnualReportingMeeting-UpdateRainbowBrownTroutGrowthAbundanceRecruitment-508-UCRO.pdf Part I: Update on Rainbow and Brown Trout Growth, Abundance, and Recruitment in Glen Canyon (TRGD) ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-01-26-twg-meeting/20230126-AnnualReportingMeeting-GrandCanyonNationalParkFisheriesProgramUpdates-FY2022-508-UCRO.pdf Grand Canyon National Park Fisheries Program Updates, FY 2022] | ||
+ | |||
+ | '''2022''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-01-26-twg-meeting/20230126-AnnualReportingMeeting-UpdateRainbowBrownTroutGrowthAbundanceRecruitment-508-UCRO.pdf Rainbow/Brown Trout Growth Abundance Recruitment] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-10-13-twg-meeting/20221013-LeesFerryRainbowTroutFishery-StatusUpdateDiscussionThreats-508-UCRO.pdf Lees Ferry Rainbow Trout Fishery-Status Update and Discussion of Threats ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-06-16-twg-meeting/20220616-EffectsBugFlowsFallHFEsCompetitionWaterQualityGrowthRatesRainbowTrout-508-UCRO.pdf Effects of Bug Flows, Fall HFEs, Competition, and Water Quality on Growth Rates of Rainbow Trout in Glen Canyon ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2022-02-10-amwg-meeting/20220210-FisheriesReview-AnnualReportingFY2021-508-UCRO.pdf Fisheries review: Annual Reporting FY2021 ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-04-13-twg-meeting/20220413-AZGFDLeesFerryMonitoringSpring2022Update-Presentation-508-UCRO.pdf AZGFD Lees Ferry Monitoring Spring 2022 Update ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-01-13-twg-meeting/20220113-AnnualReportingMeeting-ReproductiveStructureTroutSpawningCapability508-UCRO.pdf Reproductive structure of Rainbow and Brown Trout in Glen Canyon and advancing methods to assess spawning capability ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-01-13-twg-meeting/20220113-AnnualReportingMeeting-PopulationDynamicsRainbowBrownTroutGlenCanyon508-UCRO.pdf Population Dynamics of Rainbow (Oncorhynchus mykiss) and Brown (Salmo trutta) Trout in Glen Canyon ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-01-13-twg-meeting/20220113-AnnualReportingMeeting-LeesFerryFishery-508-UCRO.pdf Lees Ferry fishery ] | ||
+ | |||
+ | '''2021''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2021-10-14-twg-meeting/20211014-LeesFerryMonitoringUpdate-Presentation-508-UCRO.pdf Lees Ferry Monitoring Update] | ||
+ | *[https://doi.org/10.1139/cjfas-2020-0113 Dodrill et al. 2021, As the prey thickens—Rainbow trout select prey based upon width not length: Canadian Journal of Fisheries and Aquatic Sciences.] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2021-04-14-twg-meeting/20210414-AZGFDSpringLeesFerryMonitoringTripReport-508-UCRO.pdf Arizona Game & Fish – Lees Ferry Spring Monitoring – Trip Report ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2021-02-11-amwg-meeting/20210211-GCDAMPAnnualReportingMeetingUpdateFishes-508-UCRO.pdf GCDAMP Annual Reporting Meeting Update: Fishes ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2021-01-22-twg-meeting/20210122-AnnualReportingMeeting-FishPopulationsAquaticEcosystems-508-UCRO.pdf Fish Populations and Aquatic Ecosystems in Lees Ferry through the Little Colorado River ] | ||
+ | |||
+ | '''2020''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2020-04-15-twg-meeting/20200415-TroutRecruitmentGrowthPopulationDynamics-Presentation-508-UCRO.pdf Trout Recruitment, Growth and Population Dynamics ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2020-02-12-amwg-meeting/20200212-GCMRC2020AnnualReportingMeeting-PresentationPart2a-508-UCRO.pdf GCMRC 2019 Annual Reporting Meeting Overview – Part 2a ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2020-01-13-twg-meeting/20200113-AnnualReportingMeeting-TroutRecruitmentGrowthPopulationDynamics-Presentation-508-UCRO.pdf TRGD: Trout Recruitment, Growth and Population Dynamics ] | ||
+ | |||
+ | '''2019''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2019-03-14-twg-meeting/20190314-Long-termMonitoring-Presentation-508-UCRO.pdf Long-term Monitoring] | ||
'''2018''' | '''2018''' |
Revision as of 16:31, 18 January 2024
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The Lees Ferry Rainbow Trout FisheryIn 1964, the Lees Ferry tailrace on the Colorado River was given birth by the completion of Glen Canyon Dam, which impounded Lake Powell. Subsequent water releases from the bottom of Lake Powell changed the once highly turbid, warm waters of the Colorado River into a constant cold (46-50°F), clear flowing river. Shortly after completion of the dam, the Arizona Game and Fish Department stocked rainbow trout (Oncorhynchus mykiss) in the 15-mile Lees Ferry reach and, in 1981, began to manage this section of river as a Blue Ribbon rainbow trout fishery. The trout began to flourish in the Lees Ferry reach from 1970-1985 when catches of rainbow trout above 10-pounds were not uncommon, and angler pressure was relatively low. In 1991, however, the Bureau of Reclamation implemented the Record of Decision flow regime, which consisted of higher minimum and more stable flows and allowed for increased trout reproduction and survival. Under these conditions, a huge population of trout developed causing individual fish growth rates to decline. Quite simply, there was a large number of fish competing for limited space and food items, resulting in a fishery where trout less than 14-in were dominant. In 2000, the Arizona Game and Fish Department began a long-term monitoring program sponsored by Grand Canyon Monitoring and Research Center to determine the effects of Glen Canyon Dam operation on the trout fishery at Lees Ferry and to make recommendations for improving this fishery. Since 2000, our data collection has shown an increase in the general health of all trout age classes (especially since 2002). This increase in fish health is usually associated with an increase in growth rates. There has been a marked increase in catch rates of young-of-the-year fish in recent years. With successful spawning and recruitment continuing to occur, fishing conditions in Lees Ferry are improving. [1] LTEMP Resource Goal for the Rainbow Trout FisheryAchieve a healthy high-quality recreational rainbow trout fishery in GCNRA and reduce or eliminate downstream trout migration consistent with NPS fish management and ESA compliance. Desired Future Condition for the Lees Ferry Trout FisheryA high quality trout fishery in GCNRA, as further described in the Recreation DFC that does not adversely affect the native aquatic community in GCNP. |
Rainbow Trout | Brown Trout |
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