4f4c4942-4343-5764-6473-313231363732 English NRW_DS121668 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-12-01T17:23:26.97Z NRW 1.0 wel British National Grid (EPSG::27700) WINS Natural Flood Management: Catchment Zones WINS Natural Flood Management: Catchment Zones Rheolaeth Naturiol o Lifogydd: Parthau Dalgylch SCCAN Natural Flood Management: Catchment Zones 2018-04-01 NRW_DS121672 This dataset was created for the Welsh Information for Nature Bases Solution or WINS project (previously known as SCCAN) to identify opportunities to carry out land management interventions to increase ecosystem service delivery in a number of key policy areas. There is an accompanying User Guide to assist in the use of these datasets. A full list of datasets used and data limitations can be found in the project technical report. What the map shows: The map shows the area split into seven separate catchment zones, in which different types of NFM intervention can be used to achieve benefits. The catchment zones are: floodplains in valley bottom areas; floodplains in the mid-reaches; gentle and steeply sloping mid-reaches; floodplains in the headwaters regions, as well as gently and steeply sloping headwater regions. This dataset was created for the Welsh Information for Nature Bases Solution or WINS project (previously known as SCCAN) to identify opportunities to carry out land management interventions to increase ecosystem service delivery in a number of key policy areas. There is an accompanying User Guide to assist in the use of these datasets. A full list of datasets used and data limitations can be found in the project technical report. What the map shows: The map shows the area split into seven separate catchment zones, in which different types of NFM intervention can be used to achieve benefits. The catchment zones are: floodplains in valley bottom areas; floodplains in the mid-reaches; gentle and steeply sloping mid-reaches; floodplains in the headwaters regions, as well as gently and steeply sloping headwater regions. 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 Environment Systems Ltd 8G Vefn Llan Science Park, Aberystwyth, Ceredigion, SY23 3AH, Wales enquiries@envsys.co.uk http://www.envsys.co.uk/ Land use GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Area Statement SoNaRR NRW Thesaurus 2025-01-08 geonetwork.thesaurus.local.theme.converted_nrw-keywords Sustainable Management of Natural Resources (SMNR) Ecosystem Services (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 10 English planningCadastre society farming biota geoscientificInformation climatologyMeteorologyAtmosphere environment elevation imageryBaseMapsEarthCover inlandWaters SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2017-09-01 2018-04-01 Data gaps and limitations: This dataset shows a rough approximation of catchment zones to help target NFM measures; through more detailed hydrological modelling, more detailed catchment zones could be derived. Geographic Information System Unknown ESRI Feature Class https://smnr-nrw.hub.arcgis.com/apps/c7770d2881394c899123bae210afe370/explore WWW:LINK-1.0-http--link View Data 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 How the map has been created: For this map, the valley bottom floodplains have been defined as falling within flood zone 3 and having an elevation of less than 100m. The headwaters region has been defined as having an elevation of over 300m; the region is considered to be headwaters floodplain if the area also falls in flood zone 3; steep headwaters, if the slope is over 11°; and as gentle headwaters, if it is less than 11°. The area that is neither valley bottom nor head waters region forms the mid-reaches, with areas falling into flood zone 3 forming the mid-reaches floodplains and slope of 11° again forming the threshold between gentle and steep mid-reaches. This dataset was produced for NRW under contract by Environment Systems Ltd. How the map has been created: For this map, the valley bottom floodplains have been defined as falling within flood zone 3 and having an elevation of less than 100m. The headwaters region has been defined as having an elevation of over 300m; the region is considered to be headwaters floodplain if the area also falls in flood zone 3; steep headwaters, if the slope is over 11°; and as gentle headwaters, if it is less than 11°. The area that is neither valley bottom nor head waters region forms the mid-reaches, with areas falling into flood zone 3 forming the mid-reaches floodplains and slope of 11° again forming the threshold between gentle and steep mid-reaches. This dataset was produced for NRW under contract by Environment Systems Ltd.