Author: National Research Council
Publisher: National Academies Press
ISBN: 0309185491
Category : Science
Languages : en
Pages : 182
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Book Description
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.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309130573
Category : Science
Languages : en
Pages : 136
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Book Description
Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps portray the height and extent to which flooding is expected to occur, and they form the basis for setting flood insurance premiums and regulating development in the floodplain. As such, they are an important tool for individuals, businesses, communities, and government agencies to understand and deal with flood hazard and flood risk. Improving map accuracy is therefore not an academic question-better maps help everyone. Making and maintaining an accurate flood map is neither simple nor inexpensive. Even after an investment of more than $1 billion to take flood maps into the digital world, only 21 percent of the population has maps that meet or exceed national flood hazard data quality thresholds. Even when floodplains are mapped with high accuracy, land development and natural changes to the landscape or hydrologic systems create the need for continuous map maintenance and updates. Mapping the Zone examines the factors that affect flood map accuracy, assesses the benefits and costs of more accurate flood maps, and recommends ways to improve flood mapping, communication, and management of flood-related data.
Author: James Schwab
Publisher:
ISBN: 9781611901870
Category : Dwellings
Languages : en
Pages : 0
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Book Description
Sustainability, resilience, and climate change are top of mind for planners and floodplain managers. For subdivision design, those ideas haven't hit home. The results? Catastrophic flood damage in communities across the country. This PAS Report is out to end the cycle of build-damage-rebuild and bring subdivision design into line with the best of floodplain planning. Readers will get the tools they need to save lives, protect property, and lay the foundation for a better future.
Author: New Jersey. Division of Water Resources
Publisher:
ISBN:
Category : Flood control
Languages : en
Pages : 54
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309185556
Category : Science
Languages : en
Pages : 166
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Book Description
Floodplain maps serve as the basis for determining whether homes or buildings require flood insurance under the National Flood Insurance Program run by the Federal Emergency Management Agency (FEMA). Approximately $650 billion in insured assets are now covered under the program. FEMA is modernizing floodplain maps to better serve the program. However, concerns have been raised as to the adequacy of the base map information available to support floodplain map modernization. Elevation Data for Floodplain Mapping shows that there is sufficient two-dimensional base map imagery to meet FEMA's flood map modernization goals, but that the three-dimensional base elevation data that are needed to determine whether a building should have flood insurance are not adequate. This book makes recommendations for a new national digital elevation data collection program to redress the inadequacy. Policy makers; property insurance professionals; federal, local, and state governments; and others concerned with natural disaster prevention and preparedness will find this book of interest.
Author: Andrés Díez Herrero
Publisher: IGME
ISBN: 9788478408139
Category :
Languages : en
Pages : 196
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Book Description
Author:
Publisher:
ISBN:
Category : Flood damage prevention
Languages : en
Pages : 296
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Book Description
Author: H. James Owen
Publisher:
ISBN:
Category : Flood control
Languages : en
Pages : 100
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Book Description
Author: New Jersey. Division of Water Resources
Publisher:
ISBN:
Category : Flood control
Languages : en
Pages : 54
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Book Description
Author: United States. Federal Emergency Management Agency
Publisher:
ISBN:
Category : Flood forecasting
Languages : en
Pages : 188
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Book Description
