Download or read book Relative Survival of Juvenile Salmon Passing Through the Spillway of The Dalles Dam 1997 2000 written by Earl M. Dawley and published by . This book was released on 2002 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relative Survival of Juvenile Salmon Passing Through the Spillway of the Dalles Dam 1997 written by Earl M. Dawley and published by . This book was released on 2000 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relative Survival of Juvenile Salmon Passing Through the Spillway and the Ice and Trash Sluiceway of The Dalles Dam 1998 written by Earl M. Dawley and published by . This book was released on 2000 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relative Survival of Juvenile Salmon Passing Through the Spillway of The Dalles Dam 1999 written by Earl M. Dawley and published by . This book was released on 2000 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Endangered Species Act Section 7 Consultation written by United States. National Marine Fisheries Service and published by . This book was released on 2000 with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survival Rates of Juvenile Salmonids Passing Through the Bonneville Dam and Spillway in 2008 written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a 2008 acoustic telemetry survival study conducted by the Pacific Northwest National Laboratory for the Portland District of the U.S. Army Corps of Engineers. The study estimated the survival of juvenile Chinook salmon and steelhead passing Bonneville Dam (BON) and its spillway. Of particular interest was the relative survival of smolts detected passing through end spill bays 1-3 and 16-18, which had deep flow deflectors immediately downstream of spill gates, versus survival of smolts passing middle spill bays 4-15, which had shallow flow deflectors.

Download or read book Federal Register written by and published by . This book was released on 1997-03-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Project Survival of Juvenile Salmonids Passing Through the Bypass System Turbines and Spillways with and Without Flow Deflectors at Little Goose Dam 1997 written by William D. Muir and published by . This book was released on 1998 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Juvenile Salmonid Survival condition Upon Passing The Dalles Dam Spillbays 4 and 6 and a Vortex at Higher Spill Levels written by Normandeau Associates and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feasibility of Estimating Direct Mortality and Injury on Juvenile Salmonids Passing The Dalles Dam Spillway During High Discharge written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analyses of Potential Factors Affecting Survival of Juvenile Salmonids Volitionally Passing Through Turbines at Mcnary and John Day Dams Columbia River written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study indicates that turbine passage survival of the study fish was primarily affected by biological covariates rather than operational covariates. A negative effect of tag burden was strongly supported in data from yearling Chinook salmon at John Day and McNary dams, but not for subyearling Chinook salmon or juvenile steelhead. The negative effect of tag burden in data we examined from yearling Chinook salmon supports the recent findings from laboratory studies of barotrauma effects.

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.

Download or read book Estimated Direct Mortality and Injury Rates of Juvenile Salmonids in Passage Through the Dalles Dam Spillway Columbia River in Spring and Summer 2002 written by United States. Army. Corps of Engineers. Portland District and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Survival Estimates of Migrant Juvenile Salmonids Through the Dalles Dam Ice and Trash Sluiceway Using Radio telemetry 2001 written by Timothy D. Counihan and published by . This book was released on 2005 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimated Direct Mortality and Injury of Juvenile Salmonids in Passage Through The Dalles Dam Spillway Columbia River in Spring and Summer 2002 written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survival Estimates for the Passage of Spring Migrating Juvenile Salmonids Through Snake and Columbia River Dams and Reservoirs 2004 2005 Annual Report written by Steven G. Smith and published by . This book was released on 2005 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2004, the National Marine Fisheries Service and the University of Washington completed the twelfth year of a study to estimate survival and travel time of juvenile salmonids (Oncorhynchus spp.) passing through dams and reservoirs on the Snake and Columbia Rivers. All estimates were derived from detections of fish tagged with passive integrated transponder tags (PIT tags). We PIT tagged and released a total of 19,621 hatchery steelhead, 8,128 wild steelhead, and 9,227 wild yearling Chinook salmon at Lower Granite Dam. In addition, we utilized fish PIT tagged by other agencies at traps and hatcheries upstream from the hydropower system and sites within the hydropower system. PIT-tagged smolts were detected at interrogation facilities at Lower Granite, Little Goose, Lower Monumental, McNary, John Day, and Bonneville Dams and in the PIT-tag detector trawl operated in the Columbia River estuary. Survival estimates were calculated using a statistical model for tag-recapture data from single release groups (the single-release model). Primary research objectives in 2004 were to (1) estimate reach survival and travel time in the Snake and Columbia Rivers throughout the migration period of yearling Chinook salmon O. tshawytscha and steelhead O. mykiss; (2) evaluate relationships between survival estimates and migration conditions; and (3) evaluate the survival-estimation models under prevailing conditions. This report provides reach survival and travel time estimates for 2004 for PIT-tagged yearling Chinook salmon (hatchery and wild), hatchery sockeye salmon O. nerka, hatchery coho salmon O. kisutch, and steelhead (hatchery and wild) in the Snake and Columbia Rivers. Results are reported primarily in the form of tables and figures; details on methodology and statistical models used are provided in previous reports cited here. Survival and detection probabilities were estimated precisely for most of the 2004 yearling Chinook salmon and steelhead migrations. Hatchery and wild fish were combined in some of the analyses. Overall, the percentages for combined release groups used in survival analyses were 68% hatchery-reared yearling Chinook salmon and 32% wild. For steelhead, the overall percentages were 73% hatchery-reared and 27% wild. Estimated survival from the tailrace of Lower Granite Dam to the tailrace of Little Goose Dam averaged 0.923 for yearling Chinook salmon and 0.860 for steelhead. Respective average survival estimates for yearling Chinook salmon and steelhead were 0.875 and 0.820 from Little Goose Dam tailrace to Lower Monumental Dam tailrace; 0.818 and 0.519 from Lower Monumental Dam tailrace to McNary Dam tailrace (including passage through Ice Harbor Dam); and 0.809 and 0.465 from McNary Dam tailrace to John Day Dam tailrace. Survival for yearling Chinook salmon from John Day Dam tailrace to Bonneville Dam tailrace (including passage through The Dalles Dam) was 0.735. We were unable to estimate survival through this reach for steelhead during 2004 because too few fish were detected at Bonneville Dam due to operation of the new corner collector at the second powerhouse. Combining average estimates from the Snake River smolt trap to Lower Granite Dam, from Lower Granite Dam to McNary Dam, and from McNary Dam to Bonneville Dam, estimated annual average survival through the entire hydropower system from the head of Lower Granite reservoir to the tailrace of Bonneville Dam (eight projects) was 0.353 (s.e. 0.045) for Snake River yearling Chinook salmon. We could not empirically estimate survival through the entire system for steelhead in 2004 because of low detection rates for this species at Bonneville Dam. For yearling spring Chinook salmon released in the Upper Columbia River, estimated survival from point of release to McNary Dam tailrace was 0.484 (s.e. 0.005) for fish released from Leavenworth Hatchery, 0.748 (s.e. 0.015) for fish released from Entiat Hatchery, 0.738 (s.e. 0.036) for fish released from Winthrop Hatchery, and 0.702 (s.e. 0.048) and 0.747 (s.e.0.047) for those from Methow Hatchery, Chewuch Pond and Twisp Pond, respectively. Using pooled data, estimated survival for these groups was 0.741 (s.e. 0.038) from McNary Dam tailrace to John Day tailrace and 0.840 (s.e. 0.111) from John Day Dam tailrace to Bonneville Dam tailrace. For 13 groups of steelhead released in the Upper Columbia River, estimated survival from point of release to McNary Dam tailrace ranged from 0.510 (s.e. 0.025) for fish released from Wells Hatchery in the Similkameen River (507 km from McNary Dam) to 0.293 (s.e. 0.022) for fish released from East Bank Hatchery into Nason Creek (373 km from McNary Dam). Using pooled data, estimated survival for these groups was 0.786 (s.e. 0.059) from McNary Dam tailrace to John Day tailrace and 0.620 (s.e. 0.264) from John Day Dam tailrace to Bonneville Dam tailrace.