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Updating Flood Inundation Maps Efficiently
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Book Synopsis Updating Flood Maps Efficiently Using Existing Hydraulic Models, Very-high-accuracy Elevation Data, and a Geographic Information System by : Joseph L. Jones
Download or read book Updating Flood Maps Efficiently Using Existing Hydraulic Models, Very-high-accuracy Elevation Data, and a Geographic Information System written by Joseph L. Jones and published by . This book was released on 2001 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mapping the Zone by : National Research Council
Download or read book Mapping the Zone written by National Research Council and published by National Academies Press. This book was released on 2009-05-15 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Updating Flood Inundation Maps Efficiently by : Martha L. Erwin
Download or read book Updating Flood Inundation Maps Efficiently written by Martha L. Erwin and published by . This book was released on with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Updating Flood Maps Efficiently Using Existing Hydraulic Models, Very-high-accuracy Elevation Data, and a Geographic Information System by : Joseph L. Jones
Download or read book Updating Flood Maps Efficiently Using Existing Hydraulic Models, Very-high-accuracy Elevation Data, and a Geographic Information System written by Joseph L. Jones and published by . This book was released on 2001 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Updating Flood Maps Efficiently by :
Download or read book Updating Flood Maps Efficiently written by and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elevation Data for Floodplain Mapping by : National Research Council
Download or read book Elevation Data for Floodplain Mapping written by National Research Council and published by National Academies Press. This book was released on 2007-08-16 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Elevation Data for Floodplain Mapping by : National Research Council
Download or read book Elevation Data for Floodplain Mapping written by National Research Council and published by National Academies Press. This book was released on 2007-09-16 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 :United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. Ad Hoc Subcommittee on Disaster Recovery Publisher : ISBN 13 : Total Pages :144 pages Book Rating :4.:/5 (318 download)
Book Synopsis Flood Preparedness and Mitigation by : United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. Ad Hoc Subcommittee on Disaster Recovery
Download or read book Flood Preparedness and Mitigation written by United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs. Ad Hoc Subcommittee on Disaster Recovery and published by . This book was released on 2011 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resilient Urban Futures by : Zoé A. Hamstead
Download or read book Resilient Urban Futures written by Zoé A. Hamstead and published by Springer Nature. This book was released on 2021-04-06 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book addresses the way in which urban and urbanizing regions profoundly impact and are impacted by climate change. The editors and authors show why cities must wage simultaneous battles to curb global climate change trends while adapting and transforming to address local climate impacts. This book addresses how cities develop anticipatory and long-range planning capacities for more resilient futures, earnest collaboration across disciplines, and radical reconfigurations of the power regimes that have institutionalized the disenfranchisement of minority groups. Although planning processes consider visions for the future, the editors highlight a more ambitious long-term positive visioning approach that accounts for unpredictability, system dynamics and equity in decision-making. This volume brings the science of urban transformation together with practices of professionals who govern and manage our social, ecological and technological systems to design processes by which cities may achieve resilient urban futures in the face of climate change.
Book Synopsis Water-resources Investigations Report by :
Download or read book Water-resources Investigations Report written by and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flood Inundation Maps and Updated Components for a Flood-warning System for the City of Marietta, Ohio and Selected Communities Along the Lower Muskingum River and Ohio River by : Matthew T. Whitehead
Download or read book Flood Inundation Maps and Updated Components for a Flood-warning System for the City of Marietta, Ohio and Selected Communities Along the Lower Muskingum River and Ohio River written by Matthew T. Whitehead and published by . This book was released on 2012 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improving Topography Data for Flood Modeling by : Apoorva Ramesh Shastry
Download or read book Improving Topography Data for Flood Modeling written by Apoorva Ramesh Shastry and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Flood models predict inundation extents, and can be an important source of information for flood risk studies. Accurate flood models require high resolution and high accuracy digital elevation models (DEM); current global DEMs do not capture the topographic details in floodplains, and this often leads to inaccurate prediction of flood extents by flood models. Flood extents obtained from remotely sensed data provide indirect information about topography. Here, we attempt to use this information along with model predictions to produce better floodplain topography. To illustrate the importance of accurate DEMs, we build a hydraulic model of the Logone Floodplain in Cameroon. We use LISFLOOD-FP, a two-dimensional hydrodynamic model, to build our floodplain model, and incorporate the effects of small-scale, local features like man-made fish canals, fishnets and depressions. Fish canals and depressions are represented as sub-grid elements connected to the river channel, and the fishnet structure as a combination of weir and mesh screens. The Logone Floodplain model is calibrated manually by adjusting the DEM. Flood inundation predictions from the model are compared with classified Landsat images, and the DEM is adjusted accordingly. Manual calibration was performed during one year (2006) and validation over five years (2001 2005, 2007). The Logone model accurately predicts the measured discharge downstream of the floodplain, with NashSutcliffe Efficiency (NSE) of 0.95, indicating that the channel to floodplain flow was modeled accurately. The spatial pattern of inundation is captured with a mean hit rate of 54% and mean critical success (CSI) index of 36% before manual adjustment of the DEM, and 63% and 43% after DEM adjustment. We then develop an algorithm to systematically update DEMs, and eliminate the manual calibration step. We use a data assimilation-style scheme where predictions from an ensemble of particle DEMs are merged with satellite derived observations of flood extents. The algorithm we describe is a two-step process: first, we reduce the noise along the observed flood boundaries for all particle DEMs. Then, the model predictions from these modified DEMs are assimilated with observations using a particle batch smoother. We first implemented the algorithm for a synthetic test case, and explored the sensitivity of the algorithm to errors of various magnitude. We observed a significant improvement in accuracy in terms of RMSE, bias and standard deviation. Flood inundation maps produced from the final estimate DEMs also improved on its prior. We then adapt this algorithm and implement it to a real-world case in the Logone Floodplain. The main difference in the algorithm is that in addition to constraining the ground elevations along the flood boundary, we also constrain them within the inundated regions for the ensemble of particle DEMs. We find that the updated DEM from the algorithm produced flood maps that had higher values for hit rate and CSI, with a mean hit rate of 72% and CSI of 44%. When evaluated during a validation period not used in data assimilation, we find a mean hit rate of 66% and a mean CSI of 45%. We find that modifying the DEM significantly improved the inundation prediction capability of the model. The algorithm produces promising results, and this type of analysis can be performed in data-poor floodplains to obtain better DEMs where high resolution DEMs do not exist.
Book Synopsis Managing Geo-Based Challenges by : Serwan M. J. Baban
Download or read book Managing Geo-Based Challenges written by Serwan M. J. Baban and published by Springer. This book was released on 2014-07-03 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides sound conceptual understanding of the current approach to management and decision making regarding geo-based challenges in developing countries that tend to suffer from information poverty and subjectivity and are reactive. The book also provides the necessary technical tools to energize research thinking and develop locally driven practical and sustainable solutions, ultimately moving management and decision making from being reactive to being proactive. This book fills a void as there are no published books to show the way forward or to present real case studies for this purpose. Case studies that utilize new technologies and scientific thinking are presented for developing sustainable management options based either on producing local applied research or on utilising relevant international research. These case studies are based on the author's first-hand experiences in arid/semi-arid (Iraq, Tunisia, Morocco and Jordan), temperate (UK) and tropical environments (Malaysia, the Caribbean region, Indonesia and Australia).
Book Synopsis Updating Flood Maps Effeiciently: Building on Existing Hydraulic Information and Modern Elevation Data with a Gis Jones, Joseph L., Et Al by :
Download or read book Updating Flood Maps Effeiciently: Building on Existing Hydraulic Information and Modern Elevation Data with a Gis Jones, Joseph L., Et Al written by and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Economic Development, Public Buildings, and Emergency Management Publisher : ISBN 13 : Total Pages :96 pages Book Rating :4.0/5 ( download)
Book Synopsis National Flood Plain Remapping by : United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Economic Development, Public Buildings, and Emergency Management
Download or read book National Flood Plain Remapping written by United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Economic Development, Public Buildings, and Emergency Management and published by . This book was released on 2008 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Near-real-time Simulation and Internet-based Delivery of Forecast-flood Inundation Maps Using Two-dimensional Hydraulic Modeling by : Joseph L. Jones
Download or read book Near-real-time Simulation and Internet-based Delivery of Forecast-flood Inundation Maps Using Two-dimensional Hydraulic Modeling written by Joseph L. Jones and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scoping of Flood Hazard Mapping Needs for Belknap County, New Hampshire by : Robert H. Flynn
Download or read book Scoping of Flood Hazard Mapping Needs for Belknap County, New Hampshire written by Robert H. Flynn and published by . This book was released on 2006 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
