FEMAFLOOD2014RETIRED

The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). In addition to the preceding, required text, the Abstract should also describe the projection and coordinate system as well as a general statement about horizontal accuracy. Data reviewed 05/15/2015.数字洪水保险费率地图（Digital Flood Insurance Rate Map，DFIRM）数据库涵盖了用于编制洪水风险数据的洪水风险信息及配套支撑数据集。其所采用的主要风险分级包括年发生概率1%的洪水事件、年发生概率0.2%的洪水事件，以及极低洪水风险区域。本DFIRM数据库源自洪水保险研究（Flood Insurance Studies，FISs）、此前发布的洪水保险费率地图（Flood Insurance Rate Maps，FIRMs）、为支撑上述FISs与FIRMs开展的洪水灾害分析，以及可获取的新型测绘数据。上述FISs与FIRMs均由美国联邦紧急事务管理局（Federal Emergency Management Agency，FEMA）发布。除上述必填文本外，数据集摘要还需说明其采用的投影与坐标系，以及关于水平精度的一般性说明。数据审核日期：2015年5月15日。