Flood Alert Areas
Summary
This record is for Approval for Access product AfA055. Flood Alert Areas are geographical areas where it is possible for flooding of low-lying land and roads to occur from rivers, sea and in some locations groundwater. A single Flood Alert Area may cover the floodplain within the Flood Warning Service Limit of multiple catchments of similar characteristics. A Flood Alert Area may contain one or more Flood Warning Areas. In some coastal locations a Flood Alert may be issued for spray or overtopping and be defined by a stretch of coastline. A Flood Alert is issued to warn people of the possibility of flooding and encourage them to be alert, stay vigilant and make early / low impact preparations for flooding. Flood Alerts are issued earlier than Flood Warnings to provide advance notice of the possibility of flooding and may be issued when there is less confidence that flooding will occur in a Food Warning Area. Flood Warnings Areas (established to apply to discrete communities) are available in AfA054. INFORMATION WARNING: The groundwater flood alert areas are either at a community/local scale, or where this is not possible are more generalised and based on other factors, such as geology and counties. In general, specialists used the national groundwater dataset to make a comparison with historical maps and bedrock geology to create the groundwater flood alert 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 Alert Areas can be created, amended, or deleted at certain times in the year. This dataset was last updated on: June 5th 2024 The scheduled updates where changes may be introduced are: 21st February 2024 22nd May 2024 - Due to the ongoing flooding, this has been 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.
Categories
Use limitation statement
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Licence
Open Government LicenceAttribution statement
© Environment Agency copyright and/or database right 2024. All rights reserved.
Use constraints
© Crown copyright and database rights 2024 Ordnance Survey 100024198
Technical information
Update frequency
continual
Lineage
Greatest extent of flooding defined using Flood Zone which in turn is used to delineate the Flood Warning Service Limit which is then subdivided into Flood Alert Areas.
Spatial information
Coordinate reference system
http://www.opengis.net/def/crs/EPSG/0/27700Geographic extent
- Latitude from: 49.943 to 55.816
- Longitude from: -6.236 to 2.072
Metadata information
Language
English
Metadata identifier
864c72de-d465-11e4-855f-f0def148f590
Published by
Environment Agency
Contact publisher
Defra Data Services ForumDataset reference dates
Creation date
01 January 2004
Revision date
05 June 2024
Publication date
N/A
Period
- From: 01 January 2004
- To: 05 June 2024