4f4c4942-4343-5764-6473-313136323339 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-02-26T10:20:00.8Z NRW 1.0 wel British National Grid (EPSG::27700) Flood Alert Areas Flood Alert Areas Ardaloedd Rhybuddion Llifogydd Byddwch yn Barod Flood Alert Areas.LYR AfA055 Flood Alert Areas 2026-02-25 NRW_DS116239 Flood Alert Areas are geographical areas where it is possible for flooding to occur from rivers or the sea. A single Flood Alert Area may cover the floodplain within the Flood Warning Service Limit of multiple catchments of similar characteristics containing a number of Flood Warning Areas. A Flood Alert Area may also match that of a corresponding Flood Warning Area and warn for the possibility of flooding in that area. In some coastal locations a Flood Alert may be issued for spray or overtopping and be defined by a stretch of coastline. Practical and administrative factors may also influence the exact extent of a Flood Alert Area. An online viewable version of the dataset is available here: https://naturalresources.wales/flooding/check-your-flood-risk-on-a-map-flood-risk-assessment-wales-map/?lang=en Flood Alert Areas are geographical areas where it is possible for flooding to occur from rivers or the sea. A single Flood Alert Area may cover the floodplain within the Flood Warning Service Limit of multiple catchments of similar characteristics containing a number of Flood Warning Areas. A Flood Alert Area may also match that of a corresponding Flood Warning Area and warn for the possibility of flooding in that area. In some coastal locations a Flood Alert may be issued for spray or overtopping and be defined by a stretch of coastline. Practical and administrative factors may also influence the exact extent of a Flood Alert Area. An online viewable version of the dataset is available here: https://naturalresources.wales/flooding/check-your-flood-risk-on-a-map-flood-risk-assessment-wales-map/?lang=en Mae Ardaloedd Rhybudd Llifogydd (Flood Alert Areas) yn ardaloedd daearyddol lle mae'n bosibl i lifogydd ddigwydd o afonydd neu'r môr. Gall un Ardal Rhybudd Llifogydd o fewn Terfyn Gwasanaeth Rhybuddio am Lifogydd gynnwys gorlifdir nifer o ddalgylchoedd â nodweddion tebyg sy'n cynnwys nifer o Ardaloedd Rhybuddion am Lifogydd (Flood Warning Areas). Gall Ardal Rhybudd Llifogydd gyd-daro hefyd ag Ardal Rhybuddio am Lifogydd gyfatebol a rhybuddio am y posibilrwydd o lifogydd yn yr ardal honno. Mewn rhai lleoliadau arfordirol gall Rhybudd Llifogydd gael ei gyhoeddi ar gyfer ewyn a thonnau'r môr yn torri dros y lan a chael eu diffinio gan ddarn o arfordir. Gall ffactorau ymarferol a gweinyddol ddylanwadu ar union faint Ardal Rhybudd Llifogydd hefyd. Mae fersiwn ar-lein o'r set ddata ar gael yma - https://naturalresources.wales/flooding/check-your-flood-risk-on-a-map-flood-risk-assessment-wales-map/?lang=cy Datganiad priodoli Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl. Yn cynnwys data Arolwg Ordnans. Rhif Trwydded Arolwg Ordnans AC0000849444. 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 Environment Agency Wales Environment Agency Wales, Cambria House, 29 Newport Road, Cardiff, CF24 0TP enquiries@environment-agency.gov.uk http://www.environment-agency.gov.uk/regions/wales Natural Resources Wales (NRW) Environment Agency Wales, Cambria House, 29 Newport Road, Cardiff, CF24 0TP 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 risk zones GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Flood Alerts Floodline Flood Warnings Warning System Severe Flood Warnings floods (flooding) Warning Plan NRW Thesaurus 2026-01-16 geonetwork.thesaurus.local.theme.converted_nrw-keywords Flooding IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects Water Resources (SMNR) Freshwater and Wetlands (SMNR) Management Areas (SMNR) Ecosystem (SMNR) Physical Geography (Physiography) (SMNR) Water Quality (SMNR) Coastal Margins (SMNR) Natural Resources (Incl. Features and Processes) (SMNR) Flooding (SMNR) Sea and Coast (SMNR) Hydrological Processes (SMNR) Sustainable Management of Natural Resources (SMNR) 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 All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. 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. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right. Open Government Licence English health environment society SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2004-01-01 Further information on our flood warning codes is available on the NRW website. Live flood warnings in force are shown on the NRW website in both tabular and map based formats. The live information is updated every 15 minutes. It is also available on our Flood Alerts Wales mobile app. Customers can also obtain recorded messages on the current Alerts and Warnings in force and information on the latest flooding situation for the Flood Alert or Flood Warning Area by telephoning Floodline on 0345 9881188 and using the menu options, or by entering a QuickDial code for the respective Alert or Warning Area. Geographic Information System Unknown ArcGIS layer https://datamap.gov.wales/layers/inspire-nrw:NRW_FLOOD_WATCH_AREAS WWW:LINK-1.0-http--link Download Data https://datamap.gov.wales/capabilities/layer/348/?ows_service=wms OGC:WMS Web Mapping Services 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 A Flood Alert is issued to warn people of the possibility of flooding and encourage them to be alert stay vigilant and make early / low impact preparations for flooding. Flood Alerts are issued earlier than Flood Warnings to provide advance notice of the possibility of flooding and may be issued when there is less confidence that flooding will occur in a Flood Warning Area. A Flood Alert is issued to warn people of the possibility of flooding and encourage them to be alert stay vigilant and make early / low impact preparations for flooding. Flood Alerts are issued earlier than Flood Warnings to provide advance notice of the possibility of flooding and may be issued when there is less confidence that flooding will occur in a Flood Warning Area.