4f4c4942-4343-5764-6473-313136323238 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-04-21T16:45:15.729Z NRW 1.0 wel British National Grid (EPSG::27700) Recorded Flood Extents Recorded Flood Extents Meintiau Llifogydd wedi'u Cofnodi Historic Floodmap.lyr Historic Flood Outlines AfA013 Historic Flood Map 2026-04-20 NRW_DS116228 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. 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. Mae Meintiau Llifogydd wedi'u Cofnodi yn dangos ardaloedd lle ceir cofnodion o lifogydd yn y gorffennol o afonydd, y môr neu ddŵr wyneb. Daw'r cofnodion o nifer o ffynonellau tystiolaeth, gan gynnwys Cyfoeth Naturiol Cymru, ei ragflaenyddion neu awdurdodau rheoli risg eraill. Mae'n bosibl bod y patrwm llifogydd mewn ardal wedi newid a byddai llifogydd yn digwydd ynddi yn awr o dan amgylchiadau gwahanol. Yn ogystal, nid yw absenoldeb maint llifogydd wedi'i gofnodi'n golygu nad yw'r ardal wedi cael llifogydd erioed, dim ond nad oes gennym unrhyw gofnodion o lifogydd yn yr ardal hon ar hyn o bryd. Datganiad priodoli Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Chronfa Ddata Hawl. Cedwir pob hawl. 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 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 risk flood defence floods (flooding) NRW Thesaurus 2026-03-04 geonetwork.thesaurus.local.theme.converted_nrw-keywords Natural Resources (Incl. Features and Processes) (SMNR) Soil and Land (SMNR) Sustainable Management of Natural Resources (SMNR) Physical Geography (Physiography) (SMNR) Hydrological Processes (SMNR) Management Areas (SMNR) Sea and Coast (SMNR) Ecosystem (SMNR) Coastal Margins (SMNR) Freshwater and Wetlands (SMNR) Flooding (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 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. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English environment SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2013-04-01 Geographic Information System Unknown ESRI Feature Class https://datamap.gov.wales/layers/inspire-nrw:NRW_HISTORIC_FLOODMAP WWW:LINK-1.0-http--link Download Data and Web Services https://datamap.gov.wales/capabilities/layer/346/?ows_service=wms OGC:WMS Web Service 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 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. 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.