40f29ba5-56df-476f-9983-a4c5c57beeae English HELCOM Secretariat data@helcom.fi 2025-11-20T12:15:16 EPSG:3857 Availability of data on riverine inputs of selected hazardous substances 2025-07-01 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/40f29ba5-56df-476f-9983-a4c5c57beeae Dataset description: This dataset displays spatial coverage of available data on riverine inputs of hazardous substances to the Baltic Sea. The data illustrates availability and where available contains values of annual average inputs of hazardous substances (the latest assessment period) from sub-catchments and coastal areas 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). The data is obtained through national monitoring programmes and annually reported by Contracting Parties to the HELCOM Pollution Load Compilation (PLC-water) database as an integral part of HELCOM Pollution Load Compilation process https://nest.su.se/helcom_plc/. However, the assessment of inputs and respective data updates are performed periodically in accordance with the workplan of respective PLC-projects. 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 (HELCOM PLC-Water Guideline). Dataset content: Polygonal feature class contains the following attributes: Source code (source_code): Unique code for river sub-catchments and unmonitored areas Source name (source_name): Name of river catchment or unmonitored area Sub-basin code (subb_code): Sub-basin of the Baltic Sea the sub-catchment drains to. Country code (c_code): The Country on which territory the river mouth is located, for border rivers both are mentioned. Area km2 (area_km2): Polygon area in sq.km. Cd_20XX: annual average input of cadmium in each year of the assessment period (tonnes/year) Cd_average: average input of cadmium in the assessment period (tonnes/year) Cr_20XX: annual average input of cadmium in each year of the assessment period (tonnes/year) Cr_average: average input of chromium in the assessment period (tonnes/year) Cu_20XX: annual average input of cadmium in each year of the assessment period (tonnes/year) Cu_average: average input of copper in the assessment period (tonnes/year) Hg_20XX:annual average input of cadmium in each year of the assessment period (tonnes/year) Hg_average: average input of mercury in the assessment period (tonnes/year) Ni_20XX: annual average input of cadmium in each year of the assessment period (tonnes/year) Ni_average: average input of nickel in the assessment period (tonnes/year) Pb_20XX: annual average input of cadmium in each year of the assessment period (tonnes/year) Pb_average: average input of lead in the assessment period (tonnes/year) Zn_20XX: annual average input of cadmium in each year of the assessment period (tonnes/year) Zn_average: average input of zinc in the assessment period (tonnes/year) Year: year of the assessment Visualization: The following maps visualize the data: Map of data coverage for zinc Map of data coverage for chromium Map of data coverage for copper Map of data coverage for nickel Map of data coverage for lead Map of data coverage for cadmium Map of data coverage for mercury Data update: Metadata is updated by HELCOM Secretariat periodically after adoption of PLC report on sources of nutrients. The dataset is updated by HELCOM Secretariat periodically after adoption of PLC report on sources of nutrients. HELCOM Secretariat data@helcom.fi Environmental monitoring facilities GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme cadmium land-based marine pollution mercury monitoring station lead river pollution hazardous substance catchment area monitoring GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS data coverage Denmark Russian Federation Baltic Sea Germany Latvia Lithuania Poland Sweden Finland Estonia 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 2018-01-01 2021-12-31 ESRI Shapefile 1.0 https://nest.su.se/helcom_plc/ WWW:LINK-1.0-http--link HELCOM PLC-water database https://helcom.fi/wp-content/uploads/2022/04/HELCOM-PLC-Water-Guidelines-2022.pdf WWW:LINK-1.0-http--related HELCOM PLC-Water Guideline https://maps.helcom.fi/website/mapservice/?datasetID=pressures237 WWW:LINK-1.0-http--link Open Data coverage for cadmium in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures237 WWW:DOWNLOAD-1.0-http--download Download Data coverage for cadmium dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures236 WWW:LINK-1.0-http--link Open Data coverage for chromium in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures236 WWW:DOWNLOAD-1.0-http--download Download Data coverage for chromium dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures235 WWW:LINK-1.0-http--link Open Data coverage for copper in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures235 WWW:DOWNLOAD-1.0-http--download Download Data coverage for copper dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures234 WWW:LINK-1.0-http--link Open Data coverage for mercury in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures234 WWW:DOWNLOAD-1.0-http--download Download Data coverage for mercury dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures233 WWW:LINK-1.0-http--link Open Data coverage for nickel in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures233 WWW:DOWNLOAD-1.0-http--download Download Data coverage for nickel dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures232 WWW:LINK-1.0-http--link Open Data coverage for lead in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures232 WWW:DOWNLOAD-1.0-http--download Download Data coverage for lead dataset https://maps.helcom.fi/website/mapservice/?datasetID=pressures231 WWW:LINK-1.0-http--link Open Data coverage for zinc in Map Viewer https://maps.helcom.fi/website/MADS/download/?id=pressures231 WWW:DOWNLOAD-1.0-http--download Download Data coverage for zinc 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.