Risk of Flooding from Rivers and Seas (RoFRS)
Perygl Llifogydd o Afonydd a'r Môr - Grid Categorïau Tebygolrwydd Llifogydd Gofodol
AfA378 RoFRS Property Flood Likelihood Category Database
Risk of Flooding from Rivers and Seas (RoFRS) Spatial Flood Likelihood Category Grid
Risk of Flooding from Rivers and Sea (RoFRS).LYR
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.
dataset
http://lle.gov.wales/catalogue/item/Rofras/?lang=en
name: Download Data and Web Service
http://lle.gov.wales/services/wms/nrw?
name: Web Mapping Service
https://naturalresources.wales/evidence-and-data/maps/long-term-flood-risk/?lang=en
name: View Data
116276
https://naturalresources.wales
eng
OGP
urn:ogc:def:crs:EPSG::BNG
inlandWaters
environment
Hydrography
Natural risk zones
publication
2019-01-12
-5.77774100
-2.60886500
53.51306700
51.24082900
publication
2019-01-12
Wales (WLS)
2009-01-01
2014-12-31
publication
2016-04-01
irregular
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.
© 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.
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Natural Resources Wales (NRW)
0300 065 3000
enquiries@naturalresourceswales.gov.uk
owner
Environment Agency Wales
08708 506 506
enquiries@environment-agency.gov.uk
originator
Natural Resources Wales (NRW)
0300 065 3000
enquiries@naturalresourceswales.gov.uk
pointOfContact
2019-01-11