Alluvial Fan Flooding
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Alluvial Fan Flooding
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1996-10-07
Alluvial Fan Flooding written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-10-07 with Science categories.
Alluvial fans are gently sloping, fan-shaped landforms common at the base of mountain ranges in arid and semiarid regions such as the American West. Floods on alluvial fans, although characterized by relatively shallow depths, strike with little if any warning, can travel at extremely high velocities, and can carry a tremendous amount of sediment and debris. Such flooding presents unique problems to federal and state planners in terms of quantifying flood hazards, predicting the magnitude at which those hazards can be expected at a particular location, and devising reliable mitigation strategies. Alluvial Fan Flooding attempts to improve our capability to determine whether areas are subject to alluvial fan flooding and provides a practical perspective on how to make such a determination. The book presents criteria for determining whether an area is subject to flooding and provides examples of applying the definition and criteria to real situations in Arizona, California, New Mexico, Utah, and elsewhere. The volume also contains recommendations for the Federal Emergency Management Agency, which is primarily responsible for floodplain mapping, and for state and local decisionmakers involved in flood hazard reduction.
Alluvial Fan Flooding
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1996-11-07
Alluvial Fan Flooding written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-11-07 with Science categories.
Alluvial fans are gently sloping, fan-shaped landforms common at the base of mountain ranges in arid and semiarid regions such as the American West. Floods on alluvial fans, although characterized by relatively shallow depths, strike with little if any warning, can travel at extremely high velocities, and can carry a tremendous amount of sediment and debris. Such flooding presents unique problems to federal and state planners in terms of quantifying flood hazards, predicting the magnitude at which those hazards can be expected at a particular location, and devising reliable mitigation strategies. Alluvial Fan Flooding attempts to improve our capability to determine whether areas are subject to alluvial fan flooding and provides a practical perspective on how to make such a determination. The book presents criteria for determining whether an area is subject to flooding and provides examples of applying the definition and criteria to real situations in Arizona, California, New Mexico, Utah, and elsewhere. The volume also contains recommendations for the Federal Emergency Management Agency, which is primarily responsible for floodplain mapping, and for state and local decisionmakers involved in flood hazard reduction.
Review Of The U S Army Corps Of Engineers Involvement With Alluvial Fan Flooding Problems
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Author : Robert C. MacArthur
language : en
Publisher:
Release Date : 1988
Review Of The U S Army Corps Of Engineers Involvement With Alluvial Fan Flooding Problems written by Robert C. MacArthur and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Alluvial fans categories.
This technical paper presents a general overview of the Corps of Engineers' past involvements, present practices, and the future roles in dealing with alluvial fan flooding problems. The Corps' approach to alluvial fan flooding studies and the analytical methods they use to assess potential flood hazards are summarized. Selected case studies are presented. Six important issues that need to be considered as part of an effective alluvial fan management approach are presented. An extensive list of references is also included. (fr).
Flood Hazard Identification And Mitigation In Semi And Arid Environments
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Author : Richard H. French
language : en
Publisher: World Scientific
Release Date : 2012
Flood Hazard Identification And Mitigation In Semi And Arid Environments written by Richard H. French and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Technology & Engineering categories.
Alluvial fans are ubiquitous geomorphological features that occur throughout the world, regardless of climate, at the front of mountains as the result of erosion and deposition. They are more prominent in semi- and arid climates simply because of the lack of vegetative cover that masks their fan shapes in more humid areas. From both engineering and geological viewpoints, alluvial fans present particular fluvial and sedimentation hazards in semi- and arid regions because episodic rainfall-runoff events can result in debris, mud, and fluvial flows through complex and, in some cases, migratory channel systems. Further, in semi- and arid climates alluvial fans often end in terminal or playa lakes. Given the uniform topography of playa lakes, these features often present ideal locations for facilities such as airports; however, regardless of the engineering advantages of the topography, the episodic and often long-term flooding of these lakes attracts migratory birds. The purpose of this volume is to summarize the current state-of-the-art, from the viewpoint of engineering, in the identification and mitigation of flood hazard on alluvial fans; and to accomplish this a fundamental understanding of geology is required.
Guidelines For The Geologic Evaluation Of Debris Flow Hazards On Alluvial Fans In Utah
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Author : Richard E. Giraud
language : en
Publisher: Utah Geological Survey
Release Date : 2005-06
Guidelines For The Geologic Evaluation Of Debris Flow Hazards On Alluvial Fans In Utah written by Richard E. Giraud and has been published by Utah Geological Survey this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-06 with Science categories.
The Utah Geological Survey (UGS) developed these guidelines to help geologists evaluate debris-flow hazards on alluvial fans to ensure safe development. Debris-flow hazard evaluations are particularly important because alluvial fans are the primary sites of debris-flow deposition and are also favored sites for development. The purpose of a debris-flow-hazard evaluation is to characterize the hazard and provide design parameters for risk reduction. The UGS recommends critical facilities and structures for human occupancy not be placed in active debris flow travel and deposition areas unless the risk is reduced to an acceptable level. These guidelines use the characteristics of alluvial fan deposits as well as drainage-basin and feeder-channel sediment-supply conditions to evaluate debris-flow hazards. The hazard evaluation relies on the geomorphology, sedimentology, and stratigraphy of existing alluvial fan deposits. Analysis of alluvial-fan deposits provides the geologic basis for estimating frequency and potential volume of debris flows and describing debris-flow behavior. Drainage-basin and feeder-channel characteristics determine potential debris-flow susceptibility and the volume of stored channel sediment available for sediment bulking in future flows.
Present Status Of Management And Technical Practices On Alluvial Fan Areas In Arizona
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Author : Robert L. Ward
language : en
Publisher:
Release Date : 1988
Present Status Of Management And Technical Practices On Alluvial Fan Areas In Arizona written by Robert L. Ward and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Alluvial fans categories.
Discussions examine the history of the "404" program and evaluate its impact on highway development in Arizona and explore clarification of such key terms as "ordinary high water mark" and "headwaters." ADOT's policy for compliance with"404" program criteria is also evaluated. The report concludes with research recommendations that could enhance the ability to effectively manage the development of alluvial fans.
Natural Hazards On Alluvial Fans
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Author :
language : en
Publisher:
Release Date : 2001
Natural Hazards On Alluvial Fans written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Alluvial fans categories.
Flood And Megaflood Processes And Deposits
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Author : I. Peter Martini
language : en
Publisher: John Wiley & Sons
Release Date : 2009-03-05
Flood And Megaflood Processes And Deposits written by I. Peter Martini and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-03-05 with Science categories.
The aim of this publication is the understanding of large floods and their impact on the Earth's surface. The major objectives are: 1) to take a second look at what constitutes a megaflood that the principle of uniformitarianism is at some loss to explain and 2) to try to determine what could happen in such large floods by analyzing those that occur in front of glaciers, in alluvial-fans and in alluvial valleys. The products of these floods are presented in terms of sedimentary deposits, erosional features and damage to human activities. The volume bears out the concept that sedimentological analysis can be a powerful tool, not only for reconstructing processes that have acted on ancient landscapes, but also as a technique for risk assessment of certain troubled areas. Therefore, this volume is of interest not only to sedimentologists/gemorphlogists, but also to engineers, landuse planners and anyone interested in the interrelation between humans and the environment. If you are a member of the International Association of Sedimentologists, for purchasing details, please see: http://www.iasnet.org/publications/details.asp?code=SP32
Are North Slope Surface Alluvial Fans Pre Holocene Relicts
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Author : Erk Reimnitz
language : en
Publisher:
Release Date : 1998
Are North Slope Surface Alluvial Fans Pre Holocene Relicts written by Erk Reimnitz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Alluvial fans categories.
Effects Of Changes In An Alluvial Channel On The Timing Magnitude And Transformation Of Flood Waves Southeastern Arizona
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Author : D. E. Burkham
language : en
Publisher:
Release Date : 1976
Effects Of Changes In An Alluvial Channel On The Timing Magnitude And Transformation Of Flood Waves Southeastern Arizona written by D. E. Burkham and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Channels (Hydraulic engineering) categories.