Download or read book Hydroacoustic Evaluation and Studies at The John Day Dam 1997 written by BioSonics, Inc and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Evaluation and Studies at Bonneville Dam Spring summer 1997 written by BioSonics, Inc and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of Hydroacoustic Deployments at John Day Dam written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes short-term studies conducted in late November and early December 2001 to optimize hydroacoustic sampling techniques for John Day Dam before the 2002 fish passage efficiency (FPE) study. Knowledge gained in this study should significantly improve hydroacoustic sampling and the accuracy of estimates of fish passage at two locations that have presented problems in past studies. The spillway has been most problematic because many fish detected there were not entrained. Without correction, non-commitment of fish can result in multiple detections and overestimation of fish passage and FPE. Trash-rack-mounted, down-looking transducers for sampling unguided fish at a submerged traveling screen (STS) also have posed problems because the beam was aimed so far downstream that researchers had concerns about fish aspect and detectability. The deployments, aiming angles, and ping rates described here should eliminate all problems encountered in previous studies. This report describes hydroacoustic evaluations. The spill-bay deployment identified in this study should completely eliminate multiple detections of fish by limiting the sample volume for counting fish to the deep high-discharge volume adjacent to the gate. Results from testing of transducers deployed in a turbine intake with an STS suggest that, after testing in 2002, it may be possible to cut the number of powerhouse transducers sampling STS units by 50% or to double the spatial sampling coverage with the same number of transducers, all while improving detectability.
Download or read book Hydroacoustic Evaluation and Studies at Bonneville Dam Spring 1997 written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Evaluation of the Spill Program for Fish Passage at John Day Dam in 1987 written by Llew Johnson and published by . This book was released on 1987 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Evaluation of Juvenile Salmonid Fish Passage at John Day Dam in Summer 1988 written by David A. Ouellette and published by . This book was released on 1988 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 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 Return to the River written by Richard N. Williams and published by Elsevier. This book was released on 2005-11-21 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Return to the River will describe a new ecosystem-based approach to the restoration of salmon and steelhead populations in the Columbia River, once one of the most productive river basins for anadromous salmonids on the west coast of North America. The approach of this work has broad applicability to all recovery efforts throughout the northern hemisphere and general applicability to fisheries and aquatic restoration efforts throughout the world. The Pacific Northwest is now embroiled in a major public policy debate over the management and restoration of Pacific salmon. The outcome of the debate has the potential to affect major segments of the region's economy - river transportation, hydroelectric production, irrigated agriculture, urban growth, commercial and sport fisheries, etc. This debate, centered as it is on the salmon in all the rivers, has created a huge demand for information. The book will be a powerful addition to that debate. A 15 year collaboration by a diverse group of scientists working on the management and recovery of salmon, steelhead trout, and wildlife populations in the Pacific Northwest Includes over 200 figures, with four-color throughout the book Discusses complex issues such as habitat degradation, juvenile survival through the hydrosystem, the role of artificial production, and harvest reform
Download or read book Hydroacoustic Evaluation and Studies at The Dalles Dam Spring summer 1998 written by BioSonics, Inc and published by . This book was released on 1999 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Evaluation and Studies at The Dalles Dam Spring summer 1996 written by BioSonics, Inc and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book John Day Dam 1999 Hydroacoustic Studies Quality Control Plan written by Hydroacoustic Technology, Inc and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses subjects listed under Section 8 of the original scope of work for the hydroacoustic studies at John Day Dam in 1999.
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 North American Journal of Fisheries Management written by and published by . This book was released on 1999 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Studies at John Day Dam Spring summer 1999 written by Samuel V. Johnston and published by . This book was released on 2000 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Study at John Day Dam 1998 written by BioSonics, Inc and published by . This book was released on 1999 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroacoustic Evaluation of Notched Surface Flow Spill Gates and Overall Fish Passage at Rock Island Dam in 1997 written by Tom K. Iverson and published by . This book was released on 1997 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proposed Recovery Plan for Snake River Salmon written by United States. National Marine Fisheries Service and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
