The dataset contains sand and gravel extraction activity during 2016–2021. The dataset is based on data submitted by HELCOM Contracting Parties in response to a data call. The dataset contains active sand and gravel extraction sites as reported by Estonia, Finland and Germany. Attribute specification and units with predefined values specified from the data call Name: Name of the extraction site Area: Area where the activity is taking place in km2 amount2016 - 2021: Amount of extraction reported per year in tonnes or/and m3 Depth: Metres per event Category: Recurrence of the extraction (one-time, recurring event) Start_day: Start day of the dredging activity Start_mont: Start month of the dredging activity Start_year: Start year of the dredging activity End_day: End day of the dredging activity End_month: End month of the dredging activity End_year: End year of the dredging activity Sediment: Type of sediment extracted (mud, sand, hard substrate, mixed sand, other) Method: Method used in the extraction (digging/dredging device (open, enclosed), suction device, other) Notes: notes regarding the reported data

The dataset contains dredging sites in the marine environment that were made available by HELCOM Contracting Parties in response to a data call. Data were reported by Estonia, Finland, Germany, Poland and Sweden for the period 2016-2020. The data for 2021 was reported within HELCOM EG DREDS. Attribute specifications and units Type: Type of dredging (maintenance or capital) classified under the precautionary approach principle Start_day - Start_month - Start_year: Date in which the dredging activity started End_day - End_month - End_year: End date of the dredging activity Amount_ton: Amount of dredged material (tonnes) per event Depth: Depth of area (m) Area: Area of the actual dredging site in m2 per event Sediment: Type of sediment dredged Method: The method utilized in the dredging Notes: Notes regarding the data amount_m3: Amount of dredged material (m3) per event source: Source of the data original_t: Original type declared by the Contracting Parties

The dataset contains the extent of the land claim (permanent or temporary establishments of the sea) and the type of construction reported by the Contracting Parties for the period 2016-2021. The data was made available by HELCOM Contracting Parties in response to a data call. The data was reported by Denmark, Estonia, Finland, Poland, Russia, and Sweden. The activity was declared as not relevant in Germany and Latvia. Attribute specification and units (for points and polygons): Name: Name of the site Descrip: Brief description of the type of land claim Year: Year of construction, especially if built between 2016-2021 Area: Area in km2 Notes: Notes regarding the data Attribute specification and units (for lines): Country: Contracting Party that reported the information Type: Brief description of the type of land claim Estimated: Estimated year Area: Area in km2 Name: Name of the site descripto: Description of the site in national language Notes: Notes regarding the data

The dataset contains the location of oil refineries downloaded from the European Pollutant Release and Transfer Register. E-PRTR covers all HELCOM Contracting Parties except Russia. See attribute specification and units at: https://www.eea.europa.eu/data-and-maps/data/industrial-reporting-under-the-industrial-5/database-structure-and-use-information/eea_industrial_reporting_metadata_v6/at_download/file

The dataset contains cables in the marine environment that was made available by HELCOM Contracting Parties in response to a data call. Data were collected by the HELCOM Secretariat in 2022. Data were reported in polylines (Estonia, Finland, Poland, Denmark and Germany) and polygons (Poland). For Estonia and Sweden, HOLAS3 dataset was supplemented with HOLAS2 data. Attribute specification and units with predefined values specified from the data call Status: The status of the cable harmonized with the values from a predefined list (operational, under construction, application submitted, planned, approved, other), and following a precautionary approach that attributed the value operational for values that were out of the predefined list Type: Cable type (telecommunication, power, other) Capacity: Potential capacity of the cable or amount of data Unit: Capacity unit (kV or GB) Year: Year the cable was built Cab_prot: Specify the type of cable protection (none, sediment fill, rock fill, other) Sediment: Sediment type (mud, sand, hard, substrate, mixed sand, other) Cab_posit: Cable position in the seabed (in the sediment, on the sediment) Lay_depth: Laying depth in meters Refiling: Refilling of the trench (YES, NO) Method: The method utilized when laying the cable (digging/dredging device [open, enclosed], suction device, flushing, other) Cab_width: Widht of the cable Notes: Notes regarding the reported data and HOLAS 2 data indication. orig_stats: Original status declared by the Contracting Parties

The dataset contains point data describing the location of oil platforms in the Baltic Sea as reported by the Contracting Parties for the period 2016-2021. The data was made available by HELCOM Contracting Parties in response to a data call. The data was reported by Poland (HOLAS 2 data) and Russia. The activity was declared as not relevant by Estonia, Denmark and Latvia. Attribute specification and units: COUNTRY: The country where the structure is located LATITUDE: Latitude of the point location LONGITUDE: Longitude of the point location Name: Name of the structure Notes: Notes regarding the data

This dataset contains depositing sites reported by HELCOM EG DREDS. The depositing sites are grouped by spatial data type to pointwise, line, and polygon datasets. Data covers the years 2016-2021. Attribute specifications and units Helcom site ID (Helcom_sit): Unique id for deposit site Dredging ID (Dredging_I): Dredging site id, where material originates from Unique ID (Unique_ID): Unique id for each depositing activity (Helcom site ID + Dredging ID + year) Site name (Site_name): Name of the deposit site Type of area dredged (Type_of_ar): Type of area that was dredged (e.g. harbour or sea) Dredging activity (Dredging_a): Maintenance or capital dredging Material deposited (Material_d): The type of material deposited (e.g. sand, silt) Amount deposited (tonnes) (Amount_dep): Amount of material that has been deposited to deposit site, tonnes dry weight Amount beneficial use (tonnes) (Amount_ben): Amount material used for beneficial purposes, tonnes dry weight Beneficial use (Beneficial): Description of beneficial use Year (Year): Year of activity Country (Country): Contracting Party of HELCOM Sub-basin (Sub_basin): HELCOM sub-basin (assessment unit level 2) where activity has taken place Comments (Comments): General comments related to activity Contaminants Cd - SPAH9: Amount of contaminant deposited, in tonnes dry weight Contaminants SPCB7 - MBT : Amount of contaminant deposited, in kilograms dry weight Other contaminants (kg) (Other_cont): Any other contaminant deposited (substance indicated in "notes") Petroleum HC (tonnes) (Petroleum_): Amount of Petroleum HC deposited, in tonnes dry weight HCB - DEHP DBP BBP: Amount of contaminant deposited, in kilograms dry weight Contaminant notes (Contaminan): Notes related to contaminant load Permit (Permit): Deposit site permit reference Quality flag (Quality_fl): Quality flag of data - Quality assured: Data is quality assured either in the annual verification or in a separate quality assurance process by EN DREDS - No quality assurance: Data is not quality assured due to the reason that process has not been carried out - No Quality assurance possible: Data quality assurance process has been made, but it was not possible to find the reference data to verify the parameters original_dreda: capital or maintenance as reported by the Contrasting Party

This dataset contains polyline data of bridges and other constructions downloaded from OpenStreetMap. Attributes specification and units osm_id: OpenStreetMap ID name: Name of the construction, if available man_made: description of the construction other tags: tags related to the construction

The dataset represents the radioactive discharges from nuclear facilities in the Baltic Sea area. Data includes isotopes CS137, CO60 and SR90 Aquatic discharges in 2016-2021 with decay corrections. Attribute specification and units SITECODE: Code of the site SITENAME: Name of the site COUNTRY: country in which the site is located CO_2016 - 2020: isotope CO60 discharge during the reporting period SR_2016 - 2020: isotope SR90 discharge during the reporting period CS_2016 - 2020: isotope CS137 discharge during the reporting period CO_avg: average of isotope CO60 for the period CS_avg: average of isotope CS137 for the period SR_avg: average of isotope SR90 for the period

Created from EEA data, this dataset contains point data with the location of bathing sites downloaded from EEA (https://www.eea.europa.eu/data-and-maps/data/bathing-water-directive-status-of-bathing-water-13). No data from Russia. Attributes specification and units countryCod: International Country Code (ISO 3166-1-Alpha-2 code elements) bathingWat: Bathing water name reported by a Member State specialise: Specialised zone type lon: Longitude lat: Latitude bwProfileU: Hyperlink to documents or web pages with bathing water profile, if available