Indicative Flood Risk Areas - Communities at Risk data

Shapefile for Indicative Flood Risk Areas generated using the Environment Agency's Communities at Risk Approach. This information is provided by the Environment Agency for use by LLFAs in their review during 2017 of Preliminary Flood Risk Assessments and Flood Risk Areas under the Flood Risk Areas. it must be used in conjunction with data for Indicative Flood Risk Areas generated by the Environment Agency using the cluster method as well. The Indicative Flood Risk Areas are primarily based on an aggregated 1km square grid Updated Flood Map for Surface Water (1 in 100 and 1000 annual probability rainfall), informally referred to as the “blue square map”. This dataset is a component of Indicative Flood Risk Areas (shapefiles) A bundle download of all Indicative Flood Risk Areas spatial datasets is also available from this record. Please see individual records for full details and metadata on each product. Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved.采用环境署（Environment Agency）风险社区评估方法生成的指示性洪水风险区（Indicative Flood Risk Areas）形状文件（Shapefile）。本数据由环境署提供，供地方洪水风险主管机构（LLFAs）于2017年对初步洪水风险评估及《洪水风险区》项下的洪水风险区开展审查工作时使用，且必须与环境署采用聚类法生成的另一批指示性洪水风险区数据配套使用。 指示性洪水风险区主要基于聚合后的1公里方格网地表积水更新洪水图（对应年降雨概率1%及1‰的极端降雨场景），该图俗称"blue square map"。 本数据集为指示性洪水风险区（形状文件格式）的组成部分。 本记录还提供所有指示性洪水风险区空间数据集的打包下载服务。如需了解各产品的完整细节与元数据，请查阅对应单独记录。 署名声明：© 环境署2016年版权及/或数据库权益。保留所有权利。