4f4c4942-4343-5764-6473-313136323331 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-05-20T08:46:12.97Z NRW 1.0 wel British National Grid (EPSG::27700) Flood Storage Areas Flood Storage Areas Ardaloedd Storio Llifogydd Floodmap Flood Storage Areas.LYR Map Llifogydd: Ardaloedd Storio Llifogydd AfA031 Flood Map: Flood Storage Areas 2026-05-20 NRW_DS116231 Flood Storage Areas show those areas that act as a balancing reservoir, storage basin or balancing pond. Their purpose is to attenuate an incoming flood peak to a flow level that can be accepted by the downstream channel. It may also delay the timing of a flood peak so that its volume is discharged over a longer time interval. Flood Storage Areas that are not yet shown will be gradually added as information becomes available. Flood Storage Areas show those areas that act as a balancing reservoir, storage basin or balancing pond. Their purpose is to attenuate an incoming flood peak to a flow level that can be accepted by the downstream channel. It may also delay the timing of a flood peak so that its volume is discharged over a longer time interval. Flood Storage Areas that are not yet shown will be gradually added as information becomes available. Mae Ardaloedd Storio Llifogydd yn dangos yr ardaloedd hynny sy'n gweithredu fel cronfa gydbwyso, basn storio dŵr neu gronbwll. Eu diben yw gwanhau brig llifogydd sy'n cyrraedd i lefel lifo y gall gael ei derbyn gan y sianel i lawr yr afon. Gallant oedi amseriad brig llifogydd hefyd er mwyn i'w gyfaint gael ei ryddhau dros gyfnod hirach o amser. Ychwanegir Ardaloedd Storio Llifogydd na ddangosir eto yn raddol wrth i ragor o wybodaeth ddod ar gael. Datganiad priodoli Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a hawl cronfa ddata. 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 risk management NRW Thesaurus 2026-03-04 geonetwork.thesaurus.local.theme.converted_nrw-keywords Risk management IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects Flooding (SMNR) Ecosystem (SMNR) Soil and Land (SMNR) Hydrological Processes (SMNR) Natural Resources (Incl. Features and Processes) (SMNR) Physical Geography (Physiography) (SMNR) Sustainable Management of Natural Resources (SMNR) Freshwater and Wetlands (SMNR) Management Areas (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. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English environment imageryBaseMapsEarthCover inlandWaters Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2013-04-01 Geographic Information System Unknown ArcGIS Format. https://datamap.gov.wales/layers/inspire-nrw:NRW_FLOODMAP_FLOOD_STORAGE WWW:LINK-1.0-http--link Download Data and Web services https://datamap.gov.wales/capabilities/layer/347/?ows_service=wms OGC:WMS Web Mapping 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. true This data is made available spatially by extracting the information from an Asset Management eXpert (AMX) system. This data is made available spatially by extracting the information from an Asset Management eXpert (AMX) system.