Risk of Flooding from Rivers and Seas (RoFRS)
This is a national assessment of flood risk for Wales produced using local expertise. The dataset shows the chance of flooding from rivers and/or the sea, based on cells of 50 m. Each cell is allocated one of four flood risk categories, taking into account flood defences and their condition. No more detailed resolution is provided. An online Flood Risk Map Browser is available via the NRW website.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS116276
- Teitl Amgen
-
- Risk of Flooding from Rivers and Sea (RoFRS).LYR
- Risk of Flooding from Rivers and Seas (RoFRS) Spatial Flood Likelihood Category Grid
- AfA378 RoFRS Property Flood Likelihood Category Database
- Perygl Llifogydd o Afonydd a'r Môr - Grid Categorïau Tebygolrwydd Llifogydd Gofodol
- Laith Metadata
- English
- Datganiad
-
Spatial dataset with the floodplain split into 50m x 50m cells and each allocated one of four flood risk likelihood categories. - High: each year, there is a chance of flooding of greater than 1 in 30 (3.3 percent). - Medium: each year, there is a chance of flooding of between 1 in 30 (3.3 percent) and 1 in 100 (1 percent). - Low: each year, there is a chance of flooding of between 1 in 100 (1 percent) and 1 in 1000 (0.1 percent). - Very Low: each year, there is a chance of flooding of less than 1 in 1000 (0.1 percent). Cells where the likelihood of flooding is greater than or equal to 1 in 75 (1.3 percent) each year are identified. Each cell has a suitability rating to show at what scale it is generally appropriate to use the data to assess flood risk, and how suitable the data is for a range of different uses. If data is displayed in map form to others it should be shown with a maximum zoom scale of 1:10,000 and that base mapping of 1:25,000 is used to give context. Risk of Flooding from Rivers and Seas (RoFRS) results are indicative of the scale and distribution of the likelihood of flooding and therefore we advise that viewing at more detailed scales may not be appropriate. - Because of the way they have been produced and the fact that they are indicative, the maps are not appropriate to act as the sole evidence for any specific planning or regulatory decision or assessment of risk in relation to flooding at any scale without further supporting studies or evidence. - This data is not raw, factual or measured. It comprises of estimated or modelled results showing expected outcomes based on the data available to us.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2017-09-20
Ystod amser
- Dyddiad cychwyn
- 2009-01-01
- Dyddiad gorffen
- 2014-12-31
- Categori pwnc
-
- Inland waters
- Environment
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
Geographic Information System
()
- Math
-
ESRI Feature Class
-
Geographic Information System
Geographic Information System
()
- Lleolwr Adnoddau
-
Download Data and Web Service
World Wide Web page
- Lleolwr Adnoddau
-
View Data
World Wide Web page
- Lleolwr Adnoddau
-
Web Mapping Service
World Wide Web page
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
Spatial dataset with the floodplain split into 50m x 50m cells and each allocated one of four flood risk likelihood categories. - High: each year, there is a chance of flooding of greater than 1 in 30 (3.3 percent). - Medium: each year, there is a chance of flooding of between 1 in 30 (3.3 percent) and 1 in 100 (1 percent). - Low: each year, there is a chance of flooding of between 1 in 100 (1 percent) and 1 in 1000 (0.1 percent). - Very Low: each year, there is a chance of flooding of less than 1 in 1000 (0.1 percent). Cells where the likelihood of flooding is greater than or equal to 1 in 75 (1.3 percent) each year are identified. Each cell has a suitability rating to show at what scale it is generally appropriate to use the data to assess flood risk, and how suitable the data is for a range of different uses. If data is displayed in map form to others it should be shown with a maximum zoom scale of 1:10,000 and that base mapping of 1:25,000 is used to give context. Risk of Flooding from Rivers and Seas (RoFRS) results are indicative of the scale and distribution of the likelihood of flooding and therefore we advise that viewing at more detailed scales may not be appropriate. - Because of the way they have been produced and the fact that they are indicative, the maps are not appropriate to act as the sole evidence for any specific planning or regulatory decision or assessment of risk in relation to flooding at any scale without further supporting studies or evidence. - This data is not raw, factual or measured. It comprises of estimated or modelled results showing expected outcomes based on the data available to us.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
-
- flood prevention (flood protection) (flood management)
- flood modelling
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
Allweddair
- Integrated Public Sector Vocabulary
-
- risk management
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2013-04-03
Allweddair
-
NRW SMNR Vocabulary
-
- Natural Resources (incl. Features and Processes) (SMNR)
- Coastal Margins (SMNR)
- Ecosystem (SMNR)
- Sustainable Management of Natural Resources (SMNR)
- Sea and Coast (SMNR)
- Management Areas (SMNR)
- Flooding (SMNR)
- Soil and Land (SMNR)
- Physical Geography (physiography) (SMNR)
- Hydrological Processes (SMNR)
- Freshwater and Wetlands (SMNR)
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2023-12-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© CNC/NRW and CEH Some features of this information are based on digital spatial data licensed from the Centre for Ecology and Hydrology © NERC (CEH). Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right 2015. Land and Property Services © Crown copyright and database right. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313136323736 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-30T15:17:20.314Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0