Title Mapping the zone : improving flood map accuracy / Committee on FEMA Flood Maps, Board on Earth Sciences and Resources/Mapping Science Committee, Water Science and Technology Board, National Research Council of the National Academies

Published Washington, D.C. : National Academies Press, 2009

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Description 1 online resource (xiv, 122 pages) : illustrations (chiefly color), maps (chiefly color) Contents Cover -- Preface -- Acknowledgment of Reviewers -- Contents -- Summary -- 1. Introduction -- 2. Flood Mapping and Flood Insurance -- 3. Elevation and Height Data -- 4. Inland Flooding -- 5. Coastal Flooding -- 6. Benefits and Costs of Accurate Flood Mapping -- 7. Mapping and Risk Communication: Moving to the Future -- References -- Appendixes -- Appendix A: Methods for Estimating Base Flood Elevations in Approximate Studies -- Appendix B: Biographical Sketches of Committee Members -- Appendix C: Glossary -- Appendix D: Acronyms and Abbreviations Summary "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."--Publisher's description Bibliography Includes bibliographical references (pages 101-104) Notes Print version record Subject Floods -- United States -- Maps Floodplain management -- United States Flood forecasting -- United States -- Maps Aerial photography in watershed management -- United States Floodplains -- Monitoring -- United States -- Maps SCIENCE -- Earth Sciences -- Limnology. SCIENCE -- Earth Sciences -- Hydrology. Aerial photography in watershed management Flood forecasting Floodplain management Floodplains -- Monitoring Floods United States Genre/Form Electronic books Maps Form Electronic book Author United States. Federal Emergency Management Agency. United States. National Oceanic and Atmospheric Administration National Research Council (U.S.). Committee on FEMA Flood Maps. LC no. 2009924737 ISBN 9780309130585 0309130581 1282130358 9781282130357

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