Recorded Flood Extents
Recorded Flood Extents shows areas that have been recorded to have flooded in the past from rivers, the sea or surface water. The records come from a number of evidence sources including Natural Resources Wales, its predecessors or other Risk Management Authorities.
It is possible that the pattern of flooding in an area may have changed and would now flood under different circumstances. In addition, the absence of a recorded flood extent does not mean that the area has never flooded, only that we do not currently have records of flooding in this area.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS116228
- Alternative Title
-
- Historic Floodmap.lyr
- Historic Flood Outlines
- AfA013 Historic Flood Map
- Metadata Language
- English
- Lineage
-
The data is updated every three months, but may not change quarter to quarter if there have not been any significant flood events in the preceding period.
Recorded Flood Extents are digitised in ArcGIS from a number of sources including surveyed flood events. Please note that this map shows flooding to the land and does not necessarily indicate that properties within the Historic Flood Map were flooded internally.
This dataset was updated in May 2017 to include attribution data on the flood events. This was previously made available in the product "Recorded Flood Outlines" (NRW_DS116226) which is no longer updated and no longer available.
This dataset was updated in April 2026 to include extra attributes:
• Flood Source – the source of the flooding e.g. Rivers, Sea, Surface Water
• Flood Cause – the cause of the flooding e.g. Blockage, defences overtopping etc.
• External Comments – any additional comments about the history of flooding
These extra attributes were published on DataMapWales in April 2026 and will be included on the FRAW map and FMfP viewers in the future once a project to update the technology has completed (date unconfirmed).
- Dataset Reference Date (Publication)
- 2026-05-20
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
Distribution
- Format Type and Description
-
-
Geographic Information System
(
Unknown
)
- Specification
-
ESRI Feature Class
-
Geographic Information System
(
Unknown
)
- Resource Locator
- Download Data and Web Services ( WWW:LINK-1.0-http--link )
- Resource Locator
- Web Service ( OGC:WMS )
Quality
Data quality
- Quality Scope
- Dataset
- Conformity
- Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Explanation
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
-
The data is updated every three months, but may not change quarter to quarter if there have not been any significant flood events in the preceding period.
Recorded Flood Extents are digitised in ArcGIS from a number of sources including surveyed flood events. Please note that this map shows flooding to the land and does not necessarily indicate that properties within the Historic Flood Map were flooded internally.
This dataset was updated in May 2017 to include attribution data on the flood events. This was previously made available in the product "Recorded Flood Outlines" (NRW_DS116226) which is no longer updated and no longer available.
This dataset was updated in April 2026 to include extra attributes:
• Flood Source – the source of the flooding e.g. Rivers, Sea, Surface Water
• Flood Cause – the cause of the flooding e.g. Blockage, defences overtopping etc.
• External Comments – any additional comments about the history of flooding
These extra attributes were published on DataMapWales in April 2026 and will be included on the FRAW map and FMfP viewers in the future once a project to update the technology has completed (date unconfirmed).
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- floods (flooding)
- flood risk
- flood defence
- Type
- Theme
Citation
- Date (Publication)
- 2026-03-04
Keywords
-
NRW SMNR Keywords
-
- Coastal Margins (SMNR)
- Hydrological Processes (SMNR)
- Soil and Land (SMNR)
- Management Areas (SMNR)
- Physical Geography (Physiography) (SMNR)
- Natural Resources (Incl. Features and Processes) (SMNR)
- Ecosystem (SMNR)
- Flooding (SMNR)
- Sustainable Management of Natural Resources (SMNR)
- Freshwater and Wetlands (SMNR)
- Sea and Coast (SMNR)
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-26
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Attribution statement: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Attribution Statement
- Other constraints
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313136323238 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-05-20T08:45:02.546Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0