Safe heights for buildings and highest significant wave heights in Helsinki

Data produced by the Finnish Meteorological Institute on the safe construction height and the highest estimated significant wave height in the Helsinki region. The material can also be downloaded in several formats, including: JSON, KML, GIF, Tiff, GeoTIFF, JPEG, PNG, CSV, Esri Shape. Available formats can always be found using the [GetCapabilities](https://kartta.hel.fi/ws/geoserver/avoindata/wfs?request=GetCapabilities) survey. **Coordinate system(s):** — ETRS-GK25 (EPSG:3879). Maintenance coordinate system. The material can also be projected to other coordinate systems. Other coordinate systems, if any, can be found in the GetCapabilities document of the interface service. **Addresses of the interface services:** — WFS interface: [https://kartta.hel.fi/ws/geoserver/avoindata/wfs](https://kartta.hel.fi/ws/geoserver/avoindata/wfs?request=getCapabilities) **WFS levels** — FMI_highest_estimated_marking_wave height_point — FMI_Secure_construction heights_point Administrator: City of Helsinki, Urban Environment Industry, Services and Authorisations, City Measurement Services **Level FMI_highest_estimated_mark_wave height_point characteristics** — information service_id (int). Unique identifier of the object. — significant_wave height (decimal). Value of significant wave height (m). — the measuring point (boolean). Indication whether the value is a measurement point (true) or a generalised value (false). — data owner (string). The owner of the material. — updated_Information Service (date). Date of storage of the information service (yyyy-mm-dd). — geom (GeometryPropertyType). The geometry of the target. **Level FMI_Secure_construction heights_point characteristics** — information service_id (int). Unique identifier of the object. — estimate_for year_2020 (decimal). Estimate of the combined value of wave and water level for 2020 for the N2000 altitude system (m). — estimate_for year_2050 (decimal).Estimate of the combined value of wave and water level for 2050 in the N2000 altitude system (m). — estimate_for year_2100 (decimal). Estimate of the combined value of wave and water level for the year 2100 in the N2000 altitude system (m). — the measuring point (boolean). Whether the value is the measurement point (true) or the generalised value (false). — data owner (string). The owner of the material. — updated_Information Service (date). Date of storage of the information service (yyyy-mm-dd). — geom (GeometryPropertyType). The geometry of the target.