Download or read book Hydroacoustic Evaluation of Juvenile Salmon Passage at the Dalles Dam 1999 written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study compares hydroacoustics-based estimates of fish passage and passage metrics for two spill treatments (30- and 64-percent spills) and concomitant powerhouse operations at The Dalles Dam during the 1000 spring and summer juvenile salmon passage seasons. Data were analyzed for significant differences (Wilcoxen Signed-Rank Tests, alpha = 0.05) in daytime nighttime, and total daily fish passage and passage metrics over six 3-day treatment blocks in spring and summer. Horizontal distributions of fish passage at spillway and powerhouse and vertical distributions of fish at sluiceway and powerhouse are presented by treatment and time of day for each season. Project fish-passage efficiency (FPE) and spill efficiency were significantly higher with the higher spill and lower powerhouse generation treatment at night but not during days in both seasons. Sluiceway efficiency was higher with the lower spill and higher generation treatment at night in spring and both night and day in summer. Spill passage was not significantly different during day or night in spring but was higher with the higher spill treatment during summer nights (but not days). Sluiceway passage was higher during spring days and nights during the 30-percent spill than during the 64-percent spill but not different during days or nights in summer. Turbine passage was higher with the lower spill treatment at night in both seasons. Results should be considered in light of the confounding effects of higher spill vs. lower generation and the converse, which was inherent in the experimental design. Statistical methods, a detailed evaluation of the 'acoustic screen model', and an evaluation of two methods for estimating passage at unsampled spill bays are presented in the appendixes.

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam in 2004 written by Gary E. Johnson and published by . This book was released on 2005 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at The Dalles Dam in Summer 1989 written by Brian D. McFadden and published by . This book was released on 1990 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at The Dalles Dam Fish Attraction Water Units in 1990 written by Robert J. Stansell and published by . This book was released on 1991 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam Sluiceway 2005 written by Gary E. Johnson and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam Spillway 2006 written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to determine detailed vertical, horizontal, intensive, and diel distributions of juvenile salmonid passage at the spillway at The Dalles Dam from April 12 to July16, 2006. These data are being applied in the Spillway Improvements Program to position release pipes for direct injury and mortality studies and to provide baseline data for assessment of the vortex suppression devices scheduled for deployment in 2007. We estimated fish distributions from hydroacoustic data collected with split-beam transducers arrayed across Bays 1 through 9 and 14. Spill at ~20 kcfs per bay was bulked at Bays 1-6, although the other bays were opened at times during the study to maintain a 40% spill percentage out of total project discharge. The vertical distribution of fish was skewed toward the surface during spring, but during summer, passage peaked at 2-3 m above the spillway ogee. Fish passage rates (number per hour) and fish densities (number per kcfs) were highest at Bay 6, followed by passage at Bay 5. This result comports with spillway horizontal distribution data from radio telemetry and hydroacoustic studies in 2004. The vertical and horizontal distribution of fish passage at bays 5 and 6 was much more variable during spring than summer and more variable at bay 5 than bay 6. Diel distribution data revealed that fish passage was highest during 0600-0700 h in spring; otherwise passage was reasonably uniform on a diel basis. This study substantiates the purpose of the spillway vortex suppression device to re-distribute downstream migrants away from Bay 6 toward Bays 1-5.

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam in 2004 written by and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluations of Juvenile Salmonid Passage at Bonneville Dam Including Surface collection Simulations written by Gene R. Ploskey and published by . This book was released on 1998 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Fish Passage at The Dalles Dam in 2001 written by Russell A. Moursund and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Passage Through Experimental Routes at Bonneville Dam in 1998 written by Gene R. Ploskey and published by . This book was released on 2001 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Fish Passage Through Bonneville Dam in 2004 written by Gene R. Ploskey and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroacoustic Evaluation of Fish Passage Through Bonneville Dam in 2002 written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Portland District of the U.S. Army Corps of Engineers requested that the Pacific Northwest National Laboratory (PNNL) and the U.S. Army Engineer Research and Development Center (ERDC) conduct fish-passage studies at Bonneville Dam in 2002. The ERDC contracted with MEVATEC Corporation to provide staff ranging from scientists to technicians to help conduct the study. This study supports the Portland-District goal of maximizing fish-passage efficiency (FPE) and obtaining 95% survival for juvenile salmon passing Bonneville Dam. In this report, we present results of two studies of juvenile salmonid passage at Bonneville Dam that we carried out in the 2002 downstream passage season April 20 through July 15, 2002. The first study of Project-wide FPE provides hourly estimates of fish passage and associated variances for all operating turbine units, spill bays, and the two sluiceway entrances at Powerhouse 1 (B1), as well as estimates of a variety of fish-passage efficiency and effectiveness measures. This was the third consecutive year of full-project hydroacoustic sampling and passage estimation. The second study was more narrowly focused on B2 turbines and had two components: (1) to sample the FGE at two modified turbine intakes and compare them with efficiencies of other B2 units that were sampled in the first study, and (2) to evaluate proportions of fish passing up into gatewell slots versus through screen gaps at a few B2 turbine intakes.

Download or read book Hydroacoustic Evaluation of Fish Passage Through Bonneville Dam in 2005 written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Portland District of the U.S. Army Corps of Engineers requested that the Pacific Northwest National Laboratory (PNNL) conduct fish-passage studies at Bonneville Dam in 2005. These studies support the Portland District's goal of maximizing fish-passage efficiency (FPE) and obtaining 95% survival for juvenile salmon passing Bonneville Dam. Major passage routes include 10 turbines and a sluiceway at Powerhouse 1 (B1), an 18-bay spillway, and eight turbines and a sluiceway at Powerhouse 2 (B2). In this report, we present results of two studies related to juvenile salmonid passage at Bonneville Dam. The studies were conducted between April 16 and July 15, 2005, encompassing most of the spring and summer migrations. Studies included evaluations of (1) Project fish passage efficiency and other major passage metrics, and (2) smolt approach and fate at B1 Sluiceway Outlet 3C from the B1 forebay. Some of the large appendices are only presented on the compact disk (CD) that accompanies the final report. Examples include six large comma-separated-variable (. CSV) files of hourly fish passage, hourly variances, and Project operations for spring and summer from Appendix E, and large Audio Video Interleave (AVI) files with DIDSON-movie clips of the area upstream of B1 Sluiceway Outlet 3C (Appendix H). Those video clips show smolts approaching the outlet, predators feeding on smolts, and vortices that sometimes entrained approaching smolts into turbines. The CD also includes Adobe Acrobat Portable Document Files (PDF) of the entire report and appendices.

Download or read book Hydroacoustic Evaluation of Fish Passage Through Bonneville Dam in 1997 written by and published by . This book was released on 1998 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: "BioSonics was contracted by COE to conduct hydroacoustic studies at Bonneville Dam in 1997 in support of fish passage improvements. The work was organized into two Tasks according to the hydroacoustic methods. Task 1 has three objectives: 1.) Estimate the number of juvenile salmon passing into the sluicechute at the second powerhouse. 2.) Estimate the effects of sluicechute operation on the number submerged traveling screen (STS) guidance efficiency of juvenile salmon entering intake 11A. 3.) Evaluate different types of transducer mounts and mounting locations to estimate juvenile fish passage through the spillway. Task 2 has a single objective: determine the spatial and temporal distribution of juvenile salmon in the forebay of Bonneville Dam, by sluicechute operation, and by day and night. All three objectives of Task 1 were all addressed with fixed-location hydroacoustics. The Task 2 objective was addressed with mobile acoustic techniques." From executive summary.

Download or read book Hydroacoustic Assessment of Downstream Migrating Salmonids at the Dalles Dam in Spring and Summer 1985 Final Report written by and published by . This book was released on 1986 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hydroacoustic study of downstream migrating salmon and steelhead was conducted at The Dalles Dam. The primary objective was to estimate the effectiveness of the spillway and sluiceway in passing downstream migrants. The secondary goals were to provide information on the horizontal, vertical, and temporal distributions of downstream migrants. June 1, and the summer season was from July 1 to August 15, 1985. Nineteen transducers were deployed to monitor turbine, spillway, and sluiceway locations. The 10 h instantaneous spill effectiveness results showed that spill passed fish more efficiently during the summer study than during the spring study. During the period May 1-31 when the turbines, spillway, and sluiceway were all operating consistently, the sluiceway was found to be the most efficient method of passing fish on a percent flow basis. During the summer study, after the termination of spill, the sluiceway and turbines passed almost equal percentages of fish. The run timing during the spring showed steadily increasing numbers of fish until the peak of the run on May 16. Another, smaller peak occurred on May 20. Thereafter, passage gradually decreased through the end of the spring study. The spring run consisted of yearling chinook, steelhead and sockeye juvenile salmonids. During the summer study, fish passage gradually decreased, except for minor peaks near the beginning of the study. The summer migration consisted primarily of subyearling chinook juvenile salmonids.

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 Synthesis of Radio Telemetry Hydroacoustic and Survival Studies of Juvenile Salmon at The Dalles Dam 1982 2000 written by Gene R. Ploskey and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists from Batelle and BioAnalysts, Inc. reviewed and synthesized 29 reports of research conducted at The Dalles Dam between 1982 and 2000 which used radio-telemetry and hydroacoustic technologies to evaluate the downstream passage of juvenile salmon.