4f4c4942-4343-5764-6473-313234373931 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-03-04T08:38:02.936Z NRW 1.0 wel British National Grid (EPSG::27700) National Flood Risk Maps 2019 National Flood Risk Maps 2019 Mapiau Perygl Llifogydd Cenedlaethol 2019 National Flood Risk Maps 2019.lyr 2020-06-29 NRW_DS124791 The National Flood Hazard and Risk Maps are based on generalised modelling only. The maps have been published to comply with the Flood Risk Regulations (2009) and the EU Directive (2007/60/EC), and used to inform the creation of Flood Risk Management plans across Wales. These maps have no official status for Planning or Insurance purposes, therefore the public and professionals are advised to use the information contained within the Flood Risk Assessment Wales Map and Development Advice Map/ Flood Map for Planning (as appropriate) for these purposes as these will be more up-to-date and incorporate improved modelling information. The National Flood Risk Maps have been created for 3 sources of flooding, namely, 1. Flooding from Rivers 2. Flooding from the Sea 3. Flooding from Surface Water & Small Watercourse The maps show Risk to a range of receptors, grouped in categories of People, Economic and Environment. Risk information is aggregated and displayed at a community scale. For Rivers and Surface Water & Small Watercourses, High risk is up to 1 in 30year; Medium risk is between 1 in 30 and 1 in 100year; and Low risk is between 1 in 100year and 1 in 1,000year Annual Exceedance Probability (AEP). For the Sea, High risk is up to 1 in 30 year; Medium risk is between 1 in 30 to 1 in 200 year; and Low risk 1 in 200 year to 1 in 1000 year. The National Flood Hazard and Risk Maps are based on generalised modelling only. The maps have been published to comply with the Flood Risk Regulations (2009) and the EU Directive (2007/60/EC), and used to inform the creation of Flood Risk Management plans across Wales. These maps have no official status for Planning or Insurance purposes, therefore the public and professionals are advised to use the information contained within the Flood Risk Assessment Wales Map and Development Advice Map/ Flood Map for Planning (as appropriate) for these purposes as these will be more up-to-date and incorporate improved modelling information. The National Flood Risk Maps have been created for 3 sources of flooding, namely, 1. Flooding from Rivers 2. Flooding from the Sea 3. Flooding from Surface Water & Small Watercourse The maps show Risk to a range of receptors, grouped in categories of People, Economic and Environment. Risk information is aggregated and displayed at a community scale. For Rivers and Surface Water & Small Watercourses, High risk is up to 1 in 30year; Medium risk is between 1 in 30 and 1 in 100year; and Low risk is between 1 in 100year and 1 in 1,000year Annual Exceedance Probability (AEP). For the Sea, High risk is up to 1 in 30 year; Medium risk is between 1 in 30 to 1 in 200 year; and Low risk 1 in 200 year to 1 in 1000 year. Mapiau Perygl Llifogydd Cenedlaethol Mae'r Mapiau Peryglon Llifogydd a Risg Cenedlaethol yn seiliedig ar fodelu cyffredinol yn unig. Cyhoeddwyd y mapiau i gydymffurfio â Rheoliadau Perygl Llifogydd (2009) a Chyfarwyddeb yr UE (2007/60/EC) a chawsant eu defnyddio i gyfarwyddo’r gwaith o greu cynlluniau Rheoli Perygl Llifogydd ledled Cymru. Nid oes gan y mapiau hyn unrhyw statws swyddogol at ddibenion cynllunio neu yswiriant, felly cynghorir y cyhoedd a gweithwyr proffesiynol i ddefnyddio'r wybodaeth sydd i’w chael yn Map Asesu Perygl Llifogydd Cymru, y Map Cyngor Datblygu/Map Llifogydd ar gyfer Cynllunio (fel y bo'n briodol) at y dibenion hyn gan y bydd y rhain yn fwy diweddar ac yn cynnwys gwybodaeth fodelu well. Mae'r Mapiau Perygl Llifogydd Cenedlaethol wedi cael eu creu ar gyfer tair ffynhonnell o lifogydd, sef: Llifogydd o afonydd Llifogydd o'r môr Llifogydd o ddŵr wyneb a chyrsiau dŵr bach Mae'r mapiau'n dangos y perygl mewn perthynas ag amrywiaeth o dderbynyddion, wedi'u grwpio yn y categorïau Pobl, Economaidd a'r Amgylchedd. Caiff gwybodaeth am risg ei chydgasglu a'i harddangos ar raddfa cymuned. Ar gyfer afonydd a dŵr wyneb a chyrsiau dŵr bach, risg uchel yw Tebygolrwydd Gormodiant Blynyddol (AEP) o hyd at 1 mewn 30 o flynyddoedd, risg ganolig yw AEP o rhwng 1 a 30 ac 1 mewn 100 o flynyddoedd, a risg isel yw AEP o rhwng 1 mewn 100 o flynyddoedd ac 1 mewn 1,000 o flynyddoedd. Ar gyfer y môr, risg uchel yw AEP o hyd at 1 mewn 30 o flynyddoedd, risg ganolig yw AEP o rhwng 1 mewn 30 ac 1 mewn 200 o flynyddoedd, a risg isel yw AEP o rhwng 1 mewn 200 o flynyddoedd ac 1 mewn 1,000 o flynyddoedd. Datganiad priodoliau Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru gwybodaeth © Cyfoeth Naturiol Cymru a hawl cronfa ddata. Cedwir pob hawl. Mae rhai nodweddion o'r wybodaeth hon yn seiliedig ar ddata gofodol digidol wedi'i drwyddedu gan Ganolfan Ecoleg a Hydroleg y DU © UKCEH, Asiantaeth yr Amgylchedd © EA a Getmapping Plc a Bluesky International Limited [2015]. DEFRA, y Swyddfa Dywydd ac Asiantaeth Afonydd yr Adran Amaethyddiaeth a Datblygu Gwledig © Hawlfraint y Goron. © Prifysgol Cranfield. © Sefydliad James Hutton. Yn cynnwys data'r AO © Hawlfraint y Goron a hawl cronfa ddata. Gwasanaethau Tir ac Eiddo © Hawlfraint y Goron a hawl cronfa ddata. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en JBA Consultancy JBA Consulting, 1 Belle Vue Square, Broughton Road, Skipton, BD23 1FJ andrew.gubbin@jbaconsulting.com https://www.jbaconsulting.com/ Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Area management/restriction/regulation zones and reporting units GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme floods (flooding) flood hazard flood risk NRW Thesaurus NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords SeaDataNet Parameter Discovery Vocabulary SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml IPSV Subjects List IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects NRW SMNR Keywords NRW SMNR Keywords 2024-06-26 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW. Some features of this information are based on digital spatial data licensed from the UK Centre for Ecology and Hydrology © UKCEH, © EA and Getmapping Plc and Bluesky International Limited (2015). Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right. 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. Contains Natural Resources Wales information © Natural Resources Wales and database right. All rights reserved. Some features of this information are based on digital spatial data licensed from the UK Centre for Ecology & Hydrology © UKCEH, the Environment Agency © EA and Getmapping Plc and Bluesky International Limited [2015]. Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right. Land & Property Services © Crown copyright and database right. English inlandWaters SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2019-01-01 2020-06-29 More information on the FRAW 2018 project can be found in the final project report JBA Consulting 2019 Flood Risk Assessment Wales Project Report. Report to Natural Resources Wales. https://cyfoethnaturiolcymru.sharepoint.com/teams/waterman/frm/ran/FRAW/2019/2018s0011%20-%20FRAW%20Project%20Report%20-%20And%20Appendices.pdf Geographic Information System ESRI Feature Class https://datamap.gov.wales/layergroups/inspire-nrw:NationalFloodRiskMaps WWW:LINK-1.0-http--link View and Download https://datamap.gov.wales/capabilities/layergroup/888/?ows_service=wms OGC:WMS Web Mapping Service https://naturalresources.wales/flooding/check-your-flood-risk-by-postcode/?lang=en WWW:LINK-1.0-http--link View 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 2010-12-08 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false The risk information has been generated from the Flood Risk Assessment Wales (FRAW) Economic Toolset (v2.0). The economic toolset used the flood hazard information, to establish the impact on a range of receptors, including: People, property, roads, railways and Environmental datasets. The risk information has been generated from the Flood Risk Assessment Wales (FRAW) Economic Toolset (v2.0). The economic toolset used the flood hazard information, to establish the impact on a range of receptors, including: People, property, roads, railways and Environmental datasets.