Flood Warning Areas

This record is for Approval for Access product AfA054 Flood Warning Areas. These are geographical areas where we expect flooding to occur and where we provide a Flood Warning Service. They generally contain properties that are expected to flood from rivers or the sea and in some areas, from groundwater. Specifically, Flood Warning Areas define locations within the Flood Warning Service Limit that represent a discrete community at risk of flooding.

Flood Warnings are issued when flooding is expected to occur, Severe Flood Warnings are issued to similar areas when there is a danger to life or widespread disruption is expected.

INFORMATION WARNING: Groundwater flood warning areas are property based, usually containing a discrete urban area, suburb, city, village, or hamlet and were created in various ways. In general specialists used the national groundwater dataset, historical maps, bedrock geology and records of properties affected by groundwater flooding in the past to create the groundwater flood warning areas. Additional data sources, including groundwater susceptibility maps, borehole data, local modelling and LiDAR may also have been used depending on the location of the area.

Flood Warning Areas can be created, amended, or deleted at certain times in the year. This dataset was last updated on:
20th November 2024

The scheduled updates where changes may be introduced are:
21st February 2024
22nd May 2024 - due to the ongoing flooding, this was postponed until June 5th
14th August 2024 and
20th November 2024
Please note that these dates may change at short notice if there are system issues or a large-scale flood event. Attribution statement: © Environment Agency copyright and/or database right 2024. All rights reserved.

本记录适用于洪水预警区域产品AfA054的审批接入。这些地区是预期可能发生洪水的地理区域，我们在此提供洪水预警服务。这些区域通常包含预计会因河流或海洋洪水而受灾的财产，在某些地区，还包括地下水。具体而言，洪水预警区域定义了洪水预警服务范围内代表易受洪水风险独立社区的地理位置。洪水预警在预期发生洪水时发布，当存在生命危险或广泛破坏预期时，对类似地区发布严重洪水预警。警告信息：地下水洪水预警区域基于财产划分，通常包含独立的城区、郊区、城市、村庄或小村庄，其创建方式多样。通常，专业人员使用国家地下水数据集、历史地图、基岩地质学和受地下水洪水影响的财产记录来创建地下水洪水预警区域。根据区域位置，还可能使用了包括地下水敏感性地图、钻孔数据、当地建模和激光雷达在内的附加数据源。洪水预警区域可在年度特定时间进行创建、修订或删除。本数据集最后更新于：2024年11月20日。计划进行更新的日期，可能引入变更包括：2024年2月21日、2024年5月22日——由于持续洪水，该日期被推迟至6月5日、2024年8月14日以及2024年11月20日。请注意，如遇系统问题或大规模洪水事件，这些日期可能随时变动。归属声明：© 环境署版权和/或数据库权利2024。版权所有。