Flood Map for Planning – Climate Change Extents (defended and undefended)
The Flood Map for Planning includes several layers of information, which includes data created to support the use of Flood Zones in the planning process. These datasets show the extent of land at risk of flooding to a defined annual exceedance probability (AEP) or chance of flooding each year, taking into account the possible effects of climate change (detailed below). These datasets include the following scenarios: ● Undefended: 0.1% AEP (1 in 1000) Rivers/Sea ● Undefended: 1% AEP (1 in 100) Rivers/ 0.5% AEP (1 in 200) Sea ● Defended: 0.1% AEP (1 in 1000) Rivers/Sea ● Defended: 1% AEP (1 in 100) Rivers/ 0.5% AEP (1 in 200) Sea The undefended products show flood extents that ignore the presence and condition of flood defences. The defended products take into account the presence of flood defences and assume that they operate in the way they were intended (or designed) to function. This does not include any asset failure (or removal) scenarios. Climate change scenarios have been produced to indicate the possible impacts of climate change on future risk. The climate change allowances are based on the latest UK Climate Projections (UKCP18) from the Met Office, using the Representative Concentration Pathway (RCP) 8.5. The specific climate change scenarios shown are as follows: ● the ‘Central’ allowance for the 2080s epoch (2070-2125) for risk of flooding from rivers ● the ‘Upper End’ allowance for risk of flooding from the sea, accounting for cumulative sea level rise to 2125 For climate change scenarios, it is assumed that existing flood defences continue to function in the same way as present day. No allowance is made for any future changes to flood defence design or operation. These datasets are designed to only give an indication of flood risk to an area of land and are not suitable for showing whether an individual property is at risk of flooding. This is because we cannot know all the details about each property. Information on flood depth, speed or volume of flow is not included. Attribution statement: © Environment Agency copyright and/or database right 2025. All rights reserved.
dataset
protocol: http
name: Flood Zones Product Description.pdf
description: Flood Zones Product Description.pdf download on Defra Data Services Platform
protocol: http
name: Flood-Map-For-Planning-Climate-Change-Extents-Defended-And-Undefended.gdb.zip
description: Flood-Map-For-Planning-Climate-Change-Extents-Defended-And-Undefended.gdb.zip download on Defra Data Services Platform
protocol: http
name: Rivers_1in1000_Sea_1in1000_defended_extents_CCP1.lyr
description: Rivers_1in1000_Sea_1in1000_defended_extents_CCP1.lyr download on Defra Data Services Platform
protocol: http
name: Rivers_1in1000_Sea_1in1000_undefended_extents_CCP1.lyr
description: Rivers_1in1000_Sea_1in1000_undefended_extents_CCP1.lyr download on Defra Data Services Platform
protocol: http
name: Rivers_1in100_Sea_1in200_defended_extents_CCP1.lyr
description: Rivers_1in100_Sea_1in200_defended_extents_CCP1.lyr download on Defra Data Services Platform
protocol: http
name: Rivers_1in100_Sea_1in200_undefended_extents_CCP1.lyr
description: Rivers_1in100_Sea_1in200_undefended_extents_CCP1.lyr download on Defra Data Services Platform
https://environment.data.gov.uk/explore/610d6830-0637-4f5b-b6ce-61f5fa5635d3?download=true
protocol: http
name: FloodMapForPlanningClimateChangeExtentsDefendedAndUndefended_Download
description: Download data by area of interest
protocol: http
name: FloodMapForPlanningClimateChangeExtentsDefendedAndUndefended_WMS
description: Flood Map for Planning - Climate Change Extents (defended and undefended) WMS
protocol: http
name: FloodMapForPlanningClimateChangeExtentsDefendedAndUndefended_WFS
description: Flood Map for Planning - Climate Change Extents (defended and undefended) WFS
protocol: http
name: OGC API - Features service
description: OGC API - Features service
ebb546b2-6e9f-4365-bac7-a7ddf9f3d3ea_resource
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
inlandWaters
oceans
Flood Risk Management
climate change
rivers
sea
environment
inlandWaters
oceans
Area management/restriction/regulation zones and reporting units
publication
2008-06-01
Natural risk zones
publication
2008-06-01
risk
publication
2010-01-13
planning
publication
2010-01-13
-6.236
2.072
55.816
49.943
2099-12-31
creation
2025-02-12
publication
2025-03-25
revision
2025-02-12
quarterly
These flood outlines are created using local flood model outputs and national flood model information. These are combined by our new National Flood Risk Assessment (NaFRA2) system to generate extents of land at flood risk, with the aim of using the best available flood risk information in any one location.
Proprietary format | ESRI File based Geodatabase (GDB)
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
https://environment.data.gov.uk/support
description: Defra Data Services Forum
pointOfContact
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
pointOfContact
2025-03-21