Changing River Channels
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Changing River Channels
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Author : A. M. Gurnell
language : en
Publisher:
Release Date : 1995-09
Changing River Channels written by A. M. Gurnell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-09 with categories.
Changing River Channels
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Author : A. M. Gurnell
language : en
Publisher:
Release Date : 1995-12-04
Changing River Channels written by A. M. Gurnell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-12-04 with Nature categories.
Changing River Channels is intended for all those with an interest in the dynamics of river channels and their management. Contributions are drawn from both the academic and river management communities and these provide perspectives based upon British, European and North American examples. The chapters are organised into four sections which consider the magnitude and dimensions of river channel adjustments over different timescales; the processes which influence those adjustments, focussing particularly upon the roles of sediment transport and storage, and of vegetation; the information sources that are available for assessing the degree and nature of change; and finally, perspectives on the management of changing river channels. This volume is one of two companion edited books to mark the contributions of Professors K.J. Gregory and D. E. Walling to research on drainage basin form and processes. Each presents a balanced range of contributions written by research colleagues and students.
River Channel Management
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Author : Peter Downs
language : en
Publisher: Routledge
Release Date : 2014-02-24
River Channel Management written by Peter Downs and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-02-24 with Science categories.
River Channel Management is the first book to deal comprehensively with recent revolutions in river channel management. It explores the multi-disciplinary nature of river channel management in relation to modern management techniques that bear the background of the entire drainage basin in mind, use channel restoration where appropriate, and are designed to be sustainable. River Channel Management is divided into five sections: ·The Introduction outlines the need for river channel management . ·Retrospective Review offers an overview of twentieth century engineering methods and the ways that river channel systems operate. ·Realisation explains how greater understanding of river channel adjustments, channel hazards and river basin planning created a context for twenty-first century management. ·Requirements for Management explains and examines environmental assessment, restoration-based approaches, and methods that work towards 'design with nature' ·Final Revision speculates about prospects for twenty-first century river channel management. River Channel Management is written for higher-level undergraduates and for postgraduates in geography, ecology, engineering, planning, geology and environmental science, for professionals involved in river channel management, and for staff in environmental agencies.
Hydrologic And Morphologic Changes In Channels Of The Platte River Basin
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Author : T. R. Eschner
language : en
Publisher:
Release Date : 1981
Hydrologic And Morphologic Changes In Channels Of The Platte River Basin written by T. R. Eschner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Hydrology categories.
Open Channel Hydraulics River Hydraulic Structures And Fluvial Geomorphology
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Author : Artur Radecki-Pawlik
language : en
Publisher: CRC Press
Release Date : 2017-09-07
Open Channel Hydraulics River Hydraulic Structures And Fluvial Geomorphology written by Artur Radecki-Pawlik and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-07 with Science categories.
This book presents practical hydraulic and river engineering research along with fluvial geomorphological concepts, and links the theoretical and practical knowledge of people working every day with rivers, streams, and hydraulic structures to fluvial geomorphology. Besides providing a guide for professionals, this book also provides material for students to acquire the knowledge and skills to rehabilitate rivers, streams, and waterways.
Changes In The Channel Morphology Of Trinity River And Eight Tributaries California 1961 65
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Author : John R. Ritter
language : en
Publisher:
Release Date : 1968
Changes In The Channel Morphology Of Trinity River And Eight Tributaries California 1961 65 written by John R. Ritter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Trinity River (Calif.) categories.
River Coastal And Estuarine Morphodynamics
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Author : Gary Parker
language : en
Publisher: CRC Press
Release Date : 2005-09-29
River Coastal And Estuarine Morphodynamics written by Gary Parker and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-09-29 with Technology & Engineering categories.
The proceedings of the 4th Symposium on River, Coastal and Estuarine Morphodynamics offers the latest research results concerning quantitative modelling of the interaction of water and sediment and the shapes this interaction makes in rivers, watersheds, estuaries, the coast, the continental shelf and the deep sea. Morphodynamics is the study of the evolution of landscape and seascape features, from small scale to large.
Proceedings Workshop On Downstream River Channel Changes Resulting From Diversions Or Reservoir Construction
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Author : Daryl B. Simons
language : en
Publisher:
Release Date : 1981
Proceedings Workshop On Downstream River Channel Changes Resulting From Diversions Or Reservoir Construction written by Daryl B. Simons and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Channels (Hydraulic engineering) categories.
Channel Conveyance Capacity Channel Change And Sediment Transport In The Lower Puyallup White And Carbon Rivers Western Washington
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Author : Jonathan A. Czuba
language : en
Publisher: U.S. Department of the Interior, U.S. Geological Survey
Release Date : 2010-12-01
Channel Conveyance Capacity Channel Change And Sediment Transport In The Lower Puyallup White And Carbon Rivers Western Washington written by Jonathan A. Czuba and has been published by U.S. Department of the Interior, U.S. Geological Survey this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-01 with categories.
Draining the volcanic, glaciated terrain of Mount Rainier, Washington, the Puyallup, White, and Carbon Rivers convey copious volumes of water and sediment down to Commencement Bay in Puget Sound. Recent flooding in the lowland river system has renewed interest in understanding sediment transport and its effects on flow conveyance throughout the lower drainage basin. Bathymetric and topographic data for 156 cross sections were surveyed in the lower Puyallup River system by the U.S. Geological Survey (USGS) and were compared with similar datasets collected in 1984. Regions of significant aggradation were measured along the Puyallup and White Rivers. Between 1984 and 2009, aggradation totals as measured by changes in average channel elevation were as much as 7.5, 6.5, and 2 feet on the Puyallup, White, and Carbon Rivers, respectively. These aggrading river sections correlated with decreasing slopes in riverbeds where the rivers exit relatively confined sections in the upper drainage and enter the relatively unconstricted valleys of the low-gradient Puget Lowland. Measured grain-size distributions from each riverbed showed a progressive fining downstream. Analysis of stage-discharge relations at streamflow-gaging stations along rivers draining Mount Rainier demonstrated the dynamic nature of channel morphology on river courses influenced by glaciated, volcanic terrain. The greatest rates of aggradation since the 1980s were in the Nisqually River near National (5.0 inches per year) and the White River near Auburn (1.8 inches per year). Less pronounced aggradation was measured on the Puyallup River and the White River just downstream of Mud Mountain Dam. The largest measured rate of incision was measured in the Cowlitz River at Packwood (5.0 inches per year). Channel-conveyance capacity estimated using a one-dimensional hydraulic model decreased in some river reaches since 1984. The reach exhibiting the largest decrease (about 20–50 percent) in channel-conveyance capacity was the White River between R Street Bridge and the Lake Tapps return, a reach affected by recent flooding. Conveyance capacity also decreased in sections of the Puyallup River. Conveyance capacity was mostly unchanged along other study reaches. Bedload transport was simulated throughout the entire river network and consistent with other observations and analyses, the hydraulic model showed that the upper Puyallup and White Rivers tended to accumulate sediment. Accuracy of the bedload-transport modeling, however, was limited due to a scarcity of sediment-transport data sets from the Puyallup system, mantling of sand over cobbles in the lower Puyallup and White Rivers, and overall uncertainty in modeling sediment transport in gravel-bedded rivers. Consequently, the output results from the model were treated as more qualitative in value, useful in comparing geomorphic trends within different river reaches, but not accurate in producing precise predictions of mass of sediment moved or deposited. The hydraulic model and the bedload-transport component were useful for analyzing proposed river-management options, if surveyed cross sections adequately represented the river-management site and proposed management options. The hydraulic model showed that setback levees would provide greater flood protection than gravel-bar scalping after the initial project construction and for some time thereafter, although the model was not accurate enough to quantify the length of time of the flood protection. The greatest hydraulic benefit from setback levees would be a substantial increase in the effective channel-conveyance area. By widening the distance between levees, the new floodplain would accommodate larger increases in discharge with relatively small incremental increases in stage. Model simulation results indicate that the hydraulic benefit from a setback levee also would be long-lived and would effectively compensate for increased deposition within the setback reach from increased channel-conveyance capacity. In contrast, the benefit from gravel-bar scalping would be limited by the volume of material that could be removed and the underlying hydraulics in the river section that would be mostly unaffected by scalping. Finally, the study formulated an explanation of the flooding that affected Pacific, Washington, in January 2009. Reduction in channel-conveyance capacity of about 25 percent at the White River near Auburn streamflow-gaging station between November 2008 and January 2009 was caused by rapid accumulation of coarse-grained sediment just downstream of the gage, continuing an ongoing trend of aggradation that has been documented repeatedly.
Channel Change And Sediment Transport In Two Desert Streams In Central Arizona 1991 92
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Author : John T. C. Parker
language : en
Publisher:
Release Date : 1995
Channel Change And Sediment Transport In Two Desert Streams In Central Arizona 1991 92 written by John T. C. Parker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Maricopa County (Ariz.) categories.