4f4c4942-4343-5764-6473-313235363037 English NRW_DS125601 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2024-05-30T15:37:46.308Z NRW 1.0 wel British National Grid (EPSG::27700) Nutrient Review - Phosphorus and Nitrate Loading From Consented Discharges Nutrient Review - Phosphorus and Nitrate Loading From Consented Discharges Nitrogen and Phosphorus Loading from Consented Discharges.lyr NRW_DS125607 Estimated phosphorus and nitrate loading from consented discharges for sites with a numerical limit on phosphorus (kg/yr) Estimated phosphorus and nitrate loading from consented discharges for sites with a numerical limit on phosphorus (kg/yr) 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 Hydrography GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme nitrates (nitrogen) Nitrate directive phosphates phosphorus NRW Thesaurus NRW Thesaurus 2023-12-31 geonetwork.thesaurus.local.theme.converted_nrw-keywords SeaDataNet Parameter Discovery Vocabulary SeaDataNet Parameter Discovery Vocabulary 2021-01-06 geonetwork.thesaurus.external.theme.rdf+xml Integrated Public Sector Vocabulary Integrated Public Sector Vocabulary 2013-04-03 geonetwork.thesaurus.external.theme.subjects NRW SMNR Vocabulary NRW SMNR Vocabulary 2023-12-27 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords Restriction on this data have not been fully determined, however a preliminary assessment indicate part of this dataset is sensitive, and access may be restricted under relevant legislation. NRW may NOT release, publish or disseminate the sensitive data no limitations © CNC/NRW NRW does NOT grant permission to third parties to re-use or disseminate the full dataset. Subject to a full assessment, a redacted version of the data may be re-used under provision and in line with the terms of a NRW licence. English environment SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 Geographic Information System ESRI Feature Class 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 Data was extracted from NRW’s lists of discharge consents. The lists (a static WIMS dataset from 2016 and a live PALS extract from 2022) were combined, taking the more recent data where there were multiple or conflicting sources of information. As each discharge may have multiple consent lines describing different conditions, the analysis was carried out on the assumption that each consent reference represents one discharge. Duplicate sites were then removed where appropriate. CSOs and storm overflows were removed, as the consents do not generally give a good indication of discharged flows or loadings. An initial list of all discharges with a flow consent was created. This encompassed consents with “Flow” in the description (determined and codes 6425, 3527, 7782, 6426, 9827, 9843, 7435, 37). These were calculated to generate annual flows as follows: • Dry weather flow consents were multiplied by 1.3 to estimate mean daily flow • Maximum or total daily flows were multiplied by 0.5 to estimate mean daily flow • Hourly mean or weekly flows were treated as means for those time periods, and multiplied up to estimate mean daily flow • Instantaneous maximum flow was multiplied by 0.5 to estimate mean daily flow Mean daily flow was then multiplied up to estimate total average annual flow in l/yr for each discharge. Each of these discharges were then checked for nitrogen and phosphorus consents. Data was extracted from NRW’s lists of discharge consents. The lists (a static WIMS dataset from 2016 and a live PALS extract from 2022) were combined, taking the more recent data where there were multiple or conflicting sources of information. As each discharge may have multiple consent lines describing different conditions, the analysis was carried out on the assumption that each consent reference represents one discharge. Duplicate sites were then removed where appropriate. CSOs and storm overflows were removed, as the consents do not generally give a good indication of discharged flows or loadings. An initial list of all discharges with a flow consent was created. This encompassed consents with “Flow” in the description (determined and codes 6425, 3527, 7782, 6426, 9827, 9843, 7435, 37). These were calculated to generate annual flows as follows: • Dry weather flow consents were multiplied by 1.3 to estimate mean daily flow • Maximum or total daily flows were multiplied by 0.5 to estimate mean daily flow • Hourly mean or weekly flows were treated as means for those time periods, and multiplied up to estimate mean daily flow • Instantaneous maximum flow was multiplied by 0.5 to estimate mean daily flow Mean daily flow was then multiplied up to estimate total average annual flow in l/yr for each discharge. Each of these discharges were then checked for nitrogen and phosphorus consents.