Flood Alert Areas

Flood Alert Areas are geographical areas where it is possible for flooding to occur from rivers or the sea. A single Flood Alert Area may cover the floodplain within the Flood Warning Service Limit of multiple catchments of similar characteristics containing a number of Flood Warning Areas. A Flood Alert Area may also match that of a corresponding Flood Warning Area and warn for the possibility of flooding in that area. In some coastal locations a Flood Alert may be issued for spray or overtopping and be defined by a stretch of coastline. Practical and administrative factors may also influence the exact extent of a Flood Alert Area. An online viewable version of the dataset is available here: https://naturalresources.wales/flooding/check-your-flood-risk-on-a-map-flood-risk-assessment-wales-map/?lang=en洪水警戒区域（Flood Alert Area）是指存在河流或海洋引发洪水风险的地理范围。单个洪水警戒区域可覆盖多个特征相似的集水区的洪水预警服务边界范围内的河漫滩，此类集水区内可包含若干个洪水预警区域（Flood Warning Area）。部分洪水警戒区域亦可与对应的洪水预警区域范围完全重合，用于预警该区域内的洪水发生风险。在部分沿海区域，可针对海浪飞沫或堤岸越浪情况发布洪水警戒警报，其范围以一段海岸线划定。实际操作与行政规划因素同样会对洪水警戒区域的精确范围产生影响。 本数据集的在线可查看版本可通过以下链接获取：https://naturalresources.wales/flooding/check-your-flood-risk-on-a-map-flood-risk-assessment-wales-map/?lang=en