6cba9db0-47c9-42e0-a84b-f4be6d05f38a English HELCOM Secretariat data@helcom.fi 2025-11-26T16:40:39 EPSG:3857 Nutrient inputs to the sea from various sources 2025-07-01 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/6cba9db0-47c9-42e0-a84b-f4be6d05f38a This dataset reflects the spatial distribution of area specific inputs to the sea of total nitrogen and total phosphorus from different land-based sources. Area specific inputs to the sea are calculated for each sub-catchment designated for the HELCOM PLC assessment. The sub-catchments are the smallest areas for which loads of nutrients and hazardous substances are assessed. Sub-catchments are always located within borders of a single country and drain into one Baltic Sea sub-basin. Sub-catchments may correspond to either monitored or unmonitored areas. Unmonitored sub-catchments may represent either unmonitored parts of river catchments or aggregated unmonitored areas (depending on the reporting format of each Contracting Party). Area specific inputs to the sea are calculated applying the load-oriented approach (see PLC-Water Guideline, http://www.helcom.fi/Lists/Publications/PLC-Water%20Guidelines.pdf). It means that computed values reflect nutrient inputs from identified sources into respective Baltic Sea sub-basins, considering also retention in downstream sub-catchments. The data on sources of nutrients is obtained through national monitoring programmes and periodically reported by Contracting Parties to the HELCOM Pollution Loads Compilation (PLC-water) database as an integral part of HELCOM Pollution Loades Compilation process. The data is produced, compiled and quality assured in accordance with the HELCOM Guidelines for the annual and periodical compilation and reporting of waterborne pollution inputs to the Baltic Sea (PLC-Water Guideline, http://www.helcom.fi/Lists/Publications/PLC-Water%20Guidelines.pdf). Dataset content: Polygonal feature class contains the following attributes: 1. Source_Code: Unique code for sub-catchment 2. Name: Name of river catchment or unmonitored area 3. SubBasin: Sub-basin of the Baltic Sea the sub-catchment drains to. 4. Country: Country on which territory the sub-catchment is located. 5. Polygon area in sq.km. 6. Retention of nitrogen (%) 7. Retention of phosphorus (%) 8. Area specific inputs of Nitrogen to the sea (kg/km2) 9. Area specific inputs of Phosphorus to the sea (kg/km2) 10. NBL_TN: Area specific background inputs of Nitrogen to the sea (kg/km2) 11. NBL_TP: Area specific background inputs of Phosphorus to the sea (kg/km2) 12. Diffuse_TN: Area specific total diffuse inputs of Nitrogen to the sea (kg/km2) 13. Diffuse_TP: Area specific total diffuse inputs of Phosphorus to the sea (kg/km2) 14. AGL_TN: Area specific agricultural inputs of Nitrogen to the sea (kg/km2) 15. AGL_TP: Area specific agricultural inputs of Phosphorus to the sea (kg/km2) 16. Dif_other_TN: Area specific diffuse nitrogen inputs to the sea from sources other than agriculture (kg/km2) 17. Dif_other_TP: Area specific diffuse phosphorus inputs to the sea from sources other than agriculture (kg/km2) 18. Trans_TN: Area specific transboundary nitrogen inputs to the sea (kg/km2). 19. Trans_TP: Area specific transboundary phosphorus inputs to the sea (kg/km2). Visualization: The following maps visualize the data on area specific loads of nutrients from various sources: • Retention of Nitrogen (%) • Retention of Phosphorus (%) • Area specific total inputs of Nitrogen to the sea (kg/km2) • Area specific total inputs to the sea of Phosphorus to the sea (kg/km2) • Area specific background inputs of Nitrogen to the sea (kg/km2) • Area specific background inputs of Phosphorus to the sea (kg/km2) • Area specific total diffuse inputs of Nitrogen to the sea (kg/km2) • Area specific total diffuse inputs of Phosphorus to the sea (kg/km2) • Area specific agricultural inputs of Nitrogen to the sea (kg/km2) • Area specific agricultural inputs of Phosphorus to the sea (kg/km2) • Area specific diffuse Nitrogen inputs to the sea from sources other than agriculture (kg/km2) • Area specific diffuse Phosphorus inputs to the sea from sources other than agriculture (kg/km2) • Area specific transboundary inputs of Nitrogen load to the sea (kg/km2). • Area specific transboundary input of Phosphorus load to the sea (kg/km2). HELCOM Secretariat data@helcom.fi Environmental monitoring facilities GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme agricultural pollution diffuse pollution point source phosphorus land-based marine pollution environmental assessment monitoring nitrogen GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS rentention area-specific loads nutrient sources Baltic Sea Denmark Russian Federation Lithuania Sweden Estonia Latvia Germany Poland Finland Continents, countries, sea regions of the world. 2015-07-17 geonetwork.thesaurus.external.place.regions Use constraints: Data can be used freely given that the source (HELCOM) is cited. Access constraints: No limitations on public access. English environment 7.530661 33.849351 52.45589 66.438436 2023-01-01 2023-12-31 ESRI Shapefile 1.0 https://maps.helcom.fi/website/mapservice/?datasetID=pressures70 WWW:LINK-1.0-http--link Open Area specific total inputs of Nitrogen to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures70 WWW:DOWNLOAD-1.0-http--download Download Area specific total inputs of Nitrogen to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures71 WWW:LINK-1.0-http--link Open Area specific background inputs of Nitrogen to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures71 WWW:DOWNLOAD-1.0-http--download Download Area specific background inputs of Nitrogen to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures72 WWW:LINK-1.0-http--link Open Area specific total diffuse inputs of Nitrogen to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures72 WWW:DOWNLOAD-1.0-http--download Download Area specific total diffuse inputs of Nitrogen to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures73 WWW:LINK-1.0-http--link Open Area specific agricultural inputs of Nitrogen to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures73 WWW:DOWNLOAD-1.0-http--download Download Area specific agricultural inputs of Nitrogen to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures74 WWW:LINK-1.0-http--link Open Retention of Nitrogen in percent in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures74 WWW:DOWNLOAD-1.0-http--download Download Retention of Nitrogen in percent dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures76 WWW:LINK-1.0-http--link Open Area specific total inputs of Phosphorus to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures76 WWW:DOWNLOAD-1.0-http--download Download Area specific total inputs of Phosphorus to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures77 WWW:LINK-1.0-http--link Open Area specific background inputs of Phosphorus to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures77 WWW:DOWNLOAD-1.0-http--download Download Area specific background inputs of Phosphorus to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures78 WWW:LINK-1.0-http--link Open Area specific total diffuse inputs of Phosphorus to the sea in map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures78 WWW:DOWNLOAD-1.0-http--download Download Area specific total diffuse inputs of Phosphorus to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures79 WWW:LINK-1.0-http--link Open Area specific agricultural inputs of Phosphorus to the sea in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures79 WWW:DOWNLOAD-1.0-http--download Download Area specific agricultural inputs of Phosphorus to the sea dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures80 WWW:LINK-1.0-http--link Open Retention of Phosphorus in percent in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures80 WWW:DOWNLOAD-1.0-http--download Download Retention of Phosphorus in percent dataset 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 The dataset is produced by regional expert group (PLC implementation group) utilizing data reported to the HELCOM database and quality assured by Contracting Parties to HELCOM. The assessment is performed in accordance with the HELCOM Guidelines for the annual and periodical compilation and reporting of waterborne pollution inputs to the Baltic Sea (PLC-Water Guidelines) and its results are approved by the HELCOM Heads of Delegations.