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1 Introduction
Pages 7-12

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From page 7...
... This second report broadens the analysis (NFIP) was established in 1968 to slow increasing flood to other factors that affect flood map accuracy, assesses disaster relief costs by offering federal flood insurance the benefits and costs of more accurate flood maps, and to owners of property in floodplains, provided their suggests ways to improve flood mapping, risk comcommunities regulate new development in these areas munication, and management of flood-related data (FEMA, 2002)
From page 8...
... Figure 1-1.eps bitmap image BOX 1.1  Flooding in Conklin, New York, June 28, 2006 Improving the accuracy of maps can change the floodplain boundary and, thus, which properties are designated within the floodplain. Landowners often seek to avoid this designation,a which can have the effect of increasing insurance premiums, reducing property values, restricting development, and/or requiring costly mitigation efforts, such as raising the elevation of structures.
From page 9...
... Most the benefits and costs of different mapping approaches, of the hydrologic, hydraulic, elevation, and economic are based on measuring economic impacts, favorable analyses were carried out in collaboration with the and unfavorable, in monetary terms. The committee's North Carolina Floodplain Mapping Program. North assessment relied on FEMA reports as well as a case Carolina was selected because flood maps developed study in Mecklenburg and Pasquotank Counties and using high-accuracy lidar data were available for nearly the City of Asheville.
From page 10...
... Figure 1-2.eps bitmap image ing benefits: avoided flood losses for new buildings from either incomplete understanding of events and and avoided repairs to infrastructure through accurate processes or a lack of data, and they can be reduced floodplain delineation and setting flood insurance with additional information. Knowledge uncertainty premiums to better match estimates of actual risk.
From page 11...
... were not practical because capabilities to model examines the importance of elevation data in flood map coastal and shallow flood processes are rapidly evolv- accuracy and describes how land and water surfaces are ing. In contrast, methods for riverine flood mapping defined relative to geodetic datums.

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