4f4c4942-4343-5764-6473-313234383635 eng dataset Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk pointOfContact 2023-06-13 Gemini 2.2 urn:ogc:def:crs:EPSG::BNG OGP Compliance Assessment of Welsh River SACs against Phosphorus Targets Compliance with NRW River SAC Phosphorus Targets 2017-19 by Catchment Waterbodies.lyr Phosphorus Sensitive SAC Freshwater Catchments.lyr 2023-02-22 publication 124865 https://naturalresources.wales Revisions to Joint Nature Conservation Committee (JNCC) monitoring guidance have required Natural Resources Wales (NRW) to review its conservation objectives for river Special Areas of Conservation (SACs) in Wales, notably with respect to phosphorus where targets have been substantially tightened. This data was created to identify compliance with the revised phosphorus targets for Welsh river SACs. Phosphorus concentration data were extracted from the NRW water quality database (KiWQM), for a three-year period from January 2017 to December 2019 for all sample points within water bodies in the nine SACs designated for one or more river features. These were Afon Gwyrfai a Llyn Cwellyn; Afon Eden – Cors Goch Trawsfynydd; Meirionnydd Oakwoods (Afon Glaslyn); Afon Teifi; Afon Tywi; Afonydd Cleddau; River Dee & Llyn Tegid; River Usk; and River Wye. In total, 125 water bodies (river sections) were in scope. Data were excluded where (i) detection limits were inadequate to assess compliance with the target or (ii) where the sample exceeded the recommended holding time of three days prior to analysis. Outliers in the data were identified and, if they were considered likely to be causing a failure on their own, data from other nutrient pollution indicators (biochemical oxygen demand, nitrate and ammonia) were checked to corroborate possible pollution events. The data consists of two products: 1. An Excel spreadsheet summarising results and 2. An ArcGIS layer consisting of the WFD catchment area water bodies, clipped to the Welsh border and excluding water bodies not overlapping with river SAC boundaries. 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 Delimited Hydrography GEMET - INSPIRE themes, version 1.0 2023-06-14 publication © CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number 100019741. 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 There are no access restrictions on this data. NRW may release, publish or disseminate it freely. eng environment inlandWaters ISO3166 Countries 2023-06-14 publication Wales (WLS) -5.77774100 -2.60886500 51.24082900 53.51306700 2017-01-01 2022-08-19 Hatton-Ellis TW, Jones TG. 2020. Compliance Assessment of Welsh River SACs against Phosphorus Targets. NRW Evidence Report No: 489, 95pp, Natural Resources Wales, Bangor Natural Resources Wales (NRW) 0300 065 3000 Maes-y-Ffynnon LL57 2DW enquiries@naturalresourceswales.gov.uk distributor https://datamap.gov.wales/layergroups/inspire-nrw:ComplianceAssessmentOfWelshRiverSacsAgainstPhosphorusTargets Download data and Web Service https://datamap.gov.wales/capabilities/layergroup/1113/?access_token=67k4GhAr91AqiAXnyngsm3l40RrZII&ows_service=wms Web Mapping Service dataset 1. Summarised from NRW KiWQM database; 2. WFD water bodies catchment layer on X drive. 3. The data was updated in June 2022 to correct mistakes in the original version