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Book Assessing Survival of Mid Columbia River Released Juvenile Salmonids at McNary Dam Washington 2008 09

Download or read book Assessing Survival of Mid Columbia River Released Juvenile Salmonids at McNary Dam Washington 2008 09 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few studies have evaluated survival of juvenile salmon over long river reaches in the Columbia River and information regarding the survival of sockeye salmon at lower Columbia River dams is lacking. To address these information gaps, the U.S. Geological Survey was contracted by the U.S. Army Corps of Engineers to evaluate the possibility of using tagged fish released in the Mid-Columbia River to assess passage and survival at and downstream of McNary Dam. Using the acoustic telemetry systems already in place for a passage and survival study at McNary Dam, fish released from the tailraces of Wells, Rocky Reach, Rock Island, Wanapum, and Priest Rapids Dams were detected at McNary Dam and at the subsequent downstream arrays. These data were used to generate route-specific survival probabilities using single-release models from fish released in the Mid-Columbia River.

Book A Multi Year Analysis of Passage and Survival at McNary Dam 2004 09

Download or read book A Multi Year Analysis of Passage and Survival at McNary Dam 2004 09 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: As juvenile salmon Oncorhynchus spp. and steelhead O. mykiss migrate downriver to the ocean, they are subject to both natural- and human-induced mortality. Avian and piscivorous predators contribute to total natural mortality along with other factors (Vigg and others, 1991; Collis and others, 2001). Hydroelectric projects on the Snake and Columbia Rivers also can be major sources of mortality for migrating juvenile fish. Impoundments caused by dams may indirectly contribute to salmonid mortality by slowing the migration of juvenile salmonids (Raymond 1968, 1979; Plumb and others, 2006), thereby increasing energy expenditure during migration and allowing greater opportunity for predation. Furthermore, passage through dams can be a major source of direct mortality (Mesa, 1994; Whitney and others, 1997) that is cumulative for salmonid populations that negotiate multiple dams.

Book A Markov Chain Analysis of the Movements of Juvenile Salmonids in the Forebay of Mcnary Dam Washington and Oregon 2006 09

Download or read book A Markov Chain Analysis of the Movements of Juvenile Salmonids in the Forebay of Mcnary Dam Washington and Oregon 2006 09 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Passage and survival data for yearling and subyearling Chinook salmon and juvenile steelhead were collected at McNary Dam between 2006 and 2009. These data have provided critical information for resource managers to implement structural and operational changes designed to improve the survival of juvenile salmonids as they migrate past the dam. Much of the information collected at McNary Dam was in the form of three-dimensional tracks of fish movements in the forebay. These data depicted the behavior of multiple species (in three dimensions) during different diel periods, spill conditions, powerhouse operations, and test configurations of the surface bypass structures (temporary spillway weirs; TSWs). One of the challenges in reporting three-dimensional results is presenting the information in a manner that allows interested parties to summarize the behavior of many fish over many different conditions across multiple years. To accomplish this, we investigated the feasibility of using a Markov chain analysis to characterize fish movement patterns in the forebay of McNary Dam. The Markov chain analysis is one way that can be used to summarize numerically the behavior of fish in the forebay.

Book A Multi Year Analysis of Spillway Survival for Juvenile Salmonids As a Function of Spill Bay Operations at McNary Dam Washington and Oregon 2004 09

Download or read book A Multi Year Analysis of Spillway Survival for Juvenile Salmonids As a Function of Spill Bay Operations at McNary Dam Washington and Oregon 2004 09 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: As juvenile salmon Oncorhynchus spp. and steelhead O. mykiss migrate downriver to the ocean, they are subject to natural and human-induced mortality. Predators contribute to total natural mortality along with other factors.

Book A Markov Chain Analysis of the Movements of Juvenile Salmonids Including Sockeye Salmon in the Forebay of Mcnary Dam Washington and Oregon 2006 09

Download or read book A Markov Chain Analysis of the Movements of Juvenile Salmonids Including Sockeye Salmon in the Forebay of Mcnary Dam Washington and Oregon 2006 09 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Passage and survival data were collected at McNary Dam between 2006 and 2009. These data have provided critical information for resource managers to implement structural and operational changes designed to improve the survival of juvenile salmonids as they migrate past the dam. Much of the valuable information collected at McNary Dam was in the form of three-dimensional (hereafter referred to as 3-D) tracks of fish movements in the forebay. These data depicted the behavior of multiple species (in three dimensions) during different diel periods, spill conditions, powerhouse operations, and testing of the surface bypass structures (temporary spillway weirs; TSWs). One of the challenges in reporting 3-D results is presenting the information in a manner that allows interested parties to summarize the behavior of many fish over many different conditions across multiple years. To accomplish this, we used a Markov chain analysis to characterize fish movement patterns in the forebay of McNary Dam. The Markov chain analysis allowed us to numerically summarize the behavior of fish in the forebay.

Book Analysis of Dam Passage Survival of Yearling and Subyearling Chinook Salmon and Juvenile Steelhead at the Dalles Dam Oregon 2010

Download or read book Analysis of Dam Passage Survival of Yearling and Subyearling Chinook Salmon and Juvenile Steelhead at the Dalles Dam Oregon 2010 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: We performed a series of analyses of mark-recapture data from a study at The Dalles Dam during 2010 to determine if model assumptions for estimation of juvenile salmonid dam-passage survival were met and if results were similar to those using the University of Washington's newly developed ATLAS software. The study was conducted by the Pacific Northwest National Laboratory and used acoustic telemetry of yearling Chinook salmon, juvenile steelhead, and subyearling Chinook salmon released at three sites according to the new virtual/paired-release statistical model. This was the first field application of the new model, and the results were used to measure compliance with minimum survival standards set forth in a recent Biological Opinion. Our analyses indicated that most model assumptions were met. The fish groups mixed in time and space, and no euthanized tagged fish were detected.

Book Survival and Migration Behavior of Juvenile Salmonids at McNary Dam 2006

Download or read book Survival and Migration Behavior of Juvenile Salmonids at McNary Dam 2006 written by Noah S. Adams and published by . This book was released on 2008 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Evaluation of Behavioral Guidance Structure on Juvenile Salmonid Passage and Survival at Bonneville Dam in 2009

Download or read book Evaluation of Behavioral Guidance Structure on Juvenile Salmonid Passage and Survival at Bonneville Dam in 2009 written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific Northwest National Laboratory (PNNL) conducted an acoustic-telemetry study at Bonneville Dam in 2009 to evaluate the effects of a behavioral guidance structure (BGS) in the Bonneville Dam second powerhouse forebay on fish passage and survival through the second powerhouse (B2), the dam as a whole, and through the first powerhouse and spillway combined. The BGS was deployed to increase the survival of fish passing through B2 by increasing the percentage of outmigrating smolts entering the B2 Corner Collector (B2CC)--a surface flow outlet known to be a relatively benign route for downstream passage at this dam. The study relied on releases of live Juvenile Salmon Acoustic Telemetry System tagged smolts in the Columbia River and used acoustic telemetry to evaluate the approach, passage, and survival of passing juvenile salmon. Study results indicated that having turbine 11 in service is important for providing flow conditions that are comparable to those observed in pre-BGS years (2004 and 2005) and in 2008. This study supports the U.S. Army Corps of Engineers continual effort to improve conditions for juvenile anadromous fish passing through Columbia River dams.

Book Synthesis of Juvenile Salmonid Passage Studies at The Dalles Dam Volume II 2001 05

Download or read book Synthesis of Juvenile Salmonid Passage Studies at The Dalles Dam Volume II 2001 05 written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall goal of juvenile salmonid research at The Dalles Dam is to provide data to inform decisions on strategies to improve smolt survival rates at the project. Survival improvement strategies address the three primary passage routes at The Dalles Dam -- spillway, sluiceway, and turbines - with the general intent to increase spill and sluice passage and decrease turbine passage. Since the review by Ploskey et al. (2001a) of research during 1982-2000 at The Dalles Dam, the Corps funded over $20M of research in at least 39 studies during 2001-2006. The purpose of the current review is to synthesize juvenile salmonid passage data at The Dalles Dam (TDA) collected from 2001 through 2006. The data we synthesize comes from numerous research techniques employed to address particular study objectives at The Dalles Dam. The suite of techniques includes acoustic and radio telemetry, acoustic cameras, acoustic Doppler current profilers, balloon tags, computational fluid dynamics models, drogues, fixed and mobile hydroacoustics, fyke nets, physical scale models, PIT-tags, sensor fish, sonar trackers, and underwater video. Hydraulic data involves flow patterns and water velocities. Biological data involve forebay approach paths and residence times, horizontal and diel distributions, passage efficiencies and effectiveness, fish behaviors, tailrace egress and predation rates, and route-specific and total project survival rates. Data for 2001-2006 are synthesized in this report to provide, in conjunction with Ploskey et al. (2001a), resources for engineers, biologists, and dam operators to use when making decisions about fish protection measures for juvenile salmonids at The Dalles Dam. This review covers the major fish passage research efforts during 2001-2006 and includes sections on the Environmental Setting, Forebay and Project Passage Studies, Spill Studies, Sluiceway Studies, Turbine Studies, Smolt Survival Studies, and a Discussion.