North Jetty Performance and Entrance Navigation Channel Maintenance, Grays Harbor, Washington. Volume 1. Main Text PDF Download
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Author:
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Category :
Languages : en
Pages : 0
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This report documents a study performed for the U.S. Army Engineer District, Seattle to identify and evaluate feasible methods for reducing annual maintenance dredging in the outer Federal navigation channel at Grays Harbor, WA, by modification of the north jetty. Main interest was in potential reduction of southward sand bypassing the north jetty and preservation of the jetty should the neighboring beach erode. Considerable information and predictive capability were generated concerning the behavior of the Federal navigation channel and adjacent coastal and inlet shorelines. The study was conducted as a coordinated multi-disciplinary approach involving field measurement, physical modeling of the hydrodynamics and potential sediment pathways, geomorphic analysis and sediment budget formulation, and numerical modeling of waves, circulation and sediment transport, including modeling of shoreline change and bypassing. Numerous alternatives were considered and subjected to a screening process to identify feasible engineering and physically constructible alternatives within broad criteria. Six alternatives passed the screening and were evaluated. The alternatives concerned an innovative submerged spur that would be placed parallel to the shoreline along the north jetty, partial and full rehabilitation of the north jetty, and a combination of these alternatives with structures of different lengths. The sediment-control alternatives were evaluated relative to the existing condition. The study revealed many wide-area processes controlling sedimentation in and around Grays Harbor. The scale of change in southward- directed bypassing of sediment expected to occur after construction of any of the evaluated alternatives was found to be small compared to the scale of transport at the Grays Harbor entrance from sources originating outside the entrance or by being reworked and redistributed within the entrance.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This report documents a study performed for the U.S. Army Engineer District, Seattle to identify and evaluate feasible methods for reducing annual maintenance dredging in the outer Federal navigation channel at Grays Harbor, WA, by modification of the north jetty. Main interest was in potential reduction of southward sand bypassing the north jetty and preservation of the jetty should the neighboring beach erode. Considerable information and predictive capability were generated concerning the behavior of the Federal navigation channel and adjacent coastal and inlet shorelines. The study was conducted as a coordinated multi-disciplinary approach involving field measurement, physical modeling of the hydrodynamics and potential sediment pathways, geomorphic analysis and sediment budget formulation, and numerical modeling of waves, circulation and sediment transport, including modeling of shoreline change and bypassing. Numerous alternatives were considered and subjected to a screening process to identify feasible engineering and physically constructible alternatives within broad criteria. Six alternatives passed the screening and were evaluated. The alternatives concerned an innovative submerged spur that would be placed parallel to the shoreline along the north jetty, partial and full rehabilitation of the north jetty, and a combination of these alternatives with structures of different lengths. The sediment-control alternatives were evaluated relative to the existing condition. The study revealed many wide-area processes controlling sedimentation in and around Grays Harbor. The scale of change in southward- directed bypassing of sediment expected to occur after construction of any of the evaluated alternatives was found to be small compared to the scale of transport at the Grays Harbor entrance from sources originating outside the entrance or by being reworked and redistributed within the entrance.
Author: United States. Army. Corps of Engineers. Seattle District
Publisher:
ISBN:
Category : Grays Harbor (Wash.)
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 743
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Book Description
This report documents a study performed for the U.S. Army Engineer District, Seattle, to identify and evaluate feasible methods for reducing annual maintenance dredging in the outer Federal navigation channel at Grays Harbor, WA, by modification of the north jetty. Main interest was in potential reduction of southward sand bypassing the north jetty and preservation of the jetty should the neighboring beach erode. Considerable information and predictive capability were generated concerning the behavior of the Federal navigation channel and adjacent coastal and inlet shorelines. The study was conducted as a coordinated multi-disciplinary approach involving field measurement, physical modeling of the hydrodynamics and potential sediment pathways, geomorphic analysis and sediment budget formulation, and numerical modeling of waves, circulation and sediment transport, including modeling of shoreline change and bypassing. Numerous alternatives were considered and subjected to a screening process to identify feasible engineering and physically constructible alternatives within broad criteria. Six alternatives passed the screening and were evaluated. The alternatives concerned an innovative submerged spur that would be placed parallel to the shoreline along the north jetty, partial and full rehabilitation of the north jetty, and a combination of these alternatives with structures of different lengths. The sediment-control alternatives were evaluated relative to the existing condition. The study revealed many wide-area processes controlling sedimentation in and around Grays Harbor. The scale of change in southward-directed bypassing of sediment expected to occur after construction of any of the evaluated alternatives was found to be small compared to the scale of transport at the Grays Harbor entrance from sources originating outside the entrance or by being reworked and redistributed within the entrance.
Author:
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 248
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Book Description
Author: United States. Coast Guard
Publisher: Skyhorse Publishing Inc.
ISBN: 1616082437
Category : Inland navigation
Languages : en
Pages : 338
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Book Description
For anyone who owns a boat, this is the handbook for you. Included are all of the official government rules and regulations that must be followed by anyone out on the water. This book will prepare you for head?on situations, avoiding collisions, using, distress signals, and will inform you of all the up?to?date water regulations. Whether you?re in a jam or just relaxing at sea, Navigation Rules will teach and prepare you for anything and everything you may encounter while on your boat.
Author: Roger A. Barnhart
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 134
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309036283
Category : Science
Languages : en
Pages : 223
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Book Description
Are the nation's ports adequate for our present and future needs? This volume points out that no significant new deep-water construction has occurred for a decade, and provides the information and analysis needed to goad the ports and the federal government into action. The book asks three questions: Is additional port construction and maintenance dredging needed now or over the next 20 years? What would prevent dredging if it is needed? What alternatives could make additional dredging possible? The book identifies several problems in dredging ports, including the long interval between a decision to deepen a port and the time the alterations are complete. The United States needs to speed port construction to meet changing needs, and the committee recommends that we prepare for future needs by dredging now.
Author: Nevil Shute
Publisher: Vintage
ISBN: 0307476987
Category : Fiction
Languages : en
Pages : 322
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Book Description
"The most shocking fiction I have read in years. What is shocking about it is both the idea and the sheer imaginative brilliance with which Mr. Shute brings it off." THE SAN FRANCISCO CHRONICLE They are the last generation, the innocent victims of an accidental war, living out their last days, making do with what they have, hoping for a miracle. As the deadly rain moves ever closer, the world as we know it winds toward an inevitable end....
Author: Nima
Publisher: Paradise Cay Publications
ISBN: 9780939837564
Category : Political Science
Languages : en
Pages : 110
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Book Description
Chart Number One is essential to correct and accurate use of nautical charts. More than a chart, it is a book that defines the symbols, abbreviations and terms used on charts. It also provides important information about buoys, light visibility (range) and aids to navigation. This new and improved edition from Paradise Cay is a complete and accurate high quality reproduction of information provided by NOAA and NIMA.
Author: James Sprunt
Publisher:
ISBN:
Category : History
Languages : en
Pages : 774
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