4f4c4942-4343-5764-6473-313139313333 eng dataset Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk pointOfContact 2023-01-31 Gemini 2.2 urn:ogc:def:crs:EPSG::BNG OGP Water Framework Directive (WFD) River Waterbody Catchments Cycle 1 Dalgylchoedd Cyrff Dŵr Afonol y Gyfarwyddeb Fframwaith Dŵr – Cylchred 1 river catchments.LYR 2013-12-31 publication 119133 https://naturalresources.wales The 'WFD River Waterbody Catchments' are a polygon Shapefile dataset collated as defined for the implementation of the Water Framework Directive. Catchments are defined as an area of land from which all surface run-off flows through a series of streams, rivers and, possibly, lakes to a particular point in the water course such as a river confluence. Delineation of the river catchment boundaries primarily utilised the CEH Flow Grid hydrological model run with CEH Integrated Hydrological Digital Terrain Model (IHDTM) data so as to determine water drainage into river stretches. Upstream catchment size was calculated within an ESRI GIS environment using the extension Arc Hydro. Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk owner Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk originator notPlanned Geographic Information System Area management/restriction/regulation zones and reporting units GEMET - INSPIRE themes, version 1.0 2023-02-01 publication © CNC/NRW. Some features of this information are based on digital spatial data licensed from the Centre for Ecology & Hydrology © NERC (CEH). Contains OS data © 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. otherRestrictions This data is jointly owned by NRW and CEH There are no access restrictions on this data. NRW may release, publish or disseminate it freely. eng inlandWaters ISO3166 Countries 2023-02-01 publication Wales (WLS) -5.77774100 -2.60886500 51.24082900 53.51306700 2008-01-01 2013-12-31 Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk distributor https://datamap.gov.wales/layers/inspire-nrw:NRW_WFD_RIVERCATCHMENT_C1 Data Download and Web Services https://datamap.gov.wales/capabilities/layer/560/?access_token=i61nd1X0RwdwAgQrGW0sqAsWxBMiwx&ows_service=wms Web Mapping Service dataset Delineation of the river catchment boundaries primarily utilised the CEH Flow Grid hydrological model run with CEH Integrated Hydrological Digital Terrain Model (IHDTM) data so as to determine water drainage into river stretches. Upstream catchment size was calculated within an ESRI GIS environment using the extension Arc Hydro.