FEMA 100 Year Flood Plain

Federal Emergency Management Agency Floodplain for Deschutes County, Oregon. Updated by FEMA nationwide in 2007, the FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated, or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards" (Section 2 (b) (4) of the 1973 Flood Disaster Protection Act). In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood insurance coverage offered through the NFIP. Q3 Flood Data files convey certain key features from the existing hard copy FIRM. Edge-matching errors, overlaps and deficiencies in coverage, and similar problems are not corrected during digitizing or post-processing. The Q3 Flood Data files are intended to provide users with automated flood risk data that may be used to locate SFHAs. More detailed information may be obtained from the paper FIRM.

美国联邦紧急事务管理局（Federal Emergency Management Agency，FEMA）俄勒冈州德舒特县洪泛区数据集。该数据集配套的洪水保险费率地图（Flood Insurance Rate Map，FIRM）于2007年经FEMA全国范围更新，是国家洪水保险计划（National Flood Insurance Program，NFIP）开展洪泛区管理、减灾及保险相关活动的核心依据。保险申报工作需执行《洪水灾害保护法》规定的强制投保要求，该要求明确：接受联邦项目援助，或由联邦监管、规制或保险的机构或单位，在收购或改良位于已识别特殊洪水危险区的土地设施时，必须购买洪水保险（引自1973年《洪水灾害保护法》第2条(b)(4)款）。除特殊洪水危险区（Special Flood Hazard Areas，SFHAs）的识别外，洪水保险费率地图上标注的风险分区，亦是国家洪水保险计划下洪水保险保费费率制定的基础。Q3洪水数据文件提取自现有纸质版洪水保险费率地图中的部分关键要素。数字化及后处理流程中未修正边缘匹配误差、图层重叠、覆盖范围缺陷等同类问题。Q3洪水数据文件旨在为用户提供可用于定位特殊洪水危险区的自动化洪水风险数据，更详细的信息可查阅纸质版洪水保险费率地图。