Every fact in a report traces to one of these sources, with the date it was last checked. Where something is not published at all, the report says so instead of guessing.
OpenStreetMap-derived layers are © OpenStreetMap contributors, available under the Open Database Licence (ODbL). Copernicus, EFFIS and European Environment Agency data carry their own attribution requirements, listed against each entry below.
| Flood hazard maps and potential flood risk zones | Ministry for Environment and Energy — YPEN geoportal (INSPIRE WFS)2nd cycle Flood Risk Management Plans (Floods Directive 2007/60/EC) · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| SEVESO III industrial establishments | Ministry for Environment and Energy — YPEN geoportalCurrent register as served by the WFS · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Industrial sites reporting emissions | Ministry for Environment and Energy — YPEN geoportalCurrent register as served by the WFS · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Natura 2000 protected sites | Ministry for Environment and Energy — YPEN geoportalCurrent national Natura 2000 network · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Natura 2000 site names | European Environment Agency (EEA) / European Commission Directorate-General for Environment (DG ENV)EEA Natura 2000 register, snapshot taken 25 September 2026 (446 Greek sites) · CC BY 4.0, copyright holder DG ENV: confirmed verbatim on the EEA SDI catalogue records for this dataset (records d713bff7-0cdf-4f0d-acd1-dc3c63af237e and 91357f39-7866-41ce-b447-43905c364ec8) · Checked: — |
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| Urban waste water treatment plants | Ministry for Environment and Energy — YPEN geoportalUWWTD reporting · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Air quality monitoring stations | Ministry for Environment and Energy — YPEN geoportalStation register, with the pollutants each one measures · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Verified annual PM10 and PM2.5 observations | European Environment Agency (EEA), AQ e-ReportingAnnual verified samples; reporting year retained at each station · EEA open data; attribute the EEA and preserve source/provenance metadata · Checked: — |
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| Designated bathing waters (locations) | Ministry for Environment and Energy — YPEN geoportalCurrent bathing season register · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Bathing water quality classification | European Environment Agency — WISE Bathing Water Directive databaseLatest assessed season in the EEA database · EEA open data — free reuse with attribution · Checked: — |
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| Burnt areas | EFFIS — European Forest Fire Information System (Copernicus EMS)Rolling archive of mapped burnt areas · Copernicus open licence — attribution required · Checked: — |
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| Objective property value zones | Ministry of National Economy and Finance, via data.gov.gr2021 revision of the objective value system · data.gov.gr open licence — attribution required · Checked: — |
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| Fuel prices | Fuel Price Observatory (Ministry of Development), via the fuelGR open datasetDaily snapshot · Open data; fuelGR releases are public · Checked: — |
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| Monthly climate normals | NASA POWER, MERRA-2 meteorological model2001–2020 climatology period returned by NASA POWER · NASA POWER data; attribution requested · Checked: — |
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| Everyday places, tourism, transport and nature | OpenStreetMap contributors, via the Overpass APILive database at the time of the query · ODbL 1.0 — attribution and share-alike · Checked: — |
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| Tourist attractions and natural landmarks | OpenStreetMap contributors, via a Geofabrik snapshotGeofabrik snapshot, downloaded 25 September 2026 · ODbL 1.0 — attribution and share-alike · Checked: — |
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| Post offices, car rental, taxis and EV charging | OpenStreetMap contributors, via a Geofabrik snapshotGeofabrik snapshot, downloaded 25 September 2026 · ODbL 1.0 — attribution and share-alike · Checked: — |
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| Wikidata landmarks: castles, monasteries, museums, archaeological sites and natural landmarks | Wikidata contributorsLive SPARQL query snapshot, taken 25 September 2026 · CC0 1.0: public domain, no attribution condition (Wikidata's own statements; a linked Wikipedia article or Commons image, neither of which this layer carries, is separately licensed) · Checked: — |
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| Airports | Fraport Greece; the Hellenic Civil Aviation Authority (ΥΠΑ/HCAA); Wikipedia (cross-checked for IATA/ICAO codes and coordinates)Checked 24 September 2026 · Facts (existence, IATA/ICAO code, coordinates, operator) are not independently copyrightable; no OpenStreetMap/ODbL content and no Wikipedia prose is reproduced here, only cross-checked facts · Checked: — |
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| Coastline | Ministry for Environment and Energy — YPEN geoportal1:90,000 national coastline · Open data (data.gov.gr terms) — attribution required · Checked: — |
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| Base map | OpenFreeMap, OpenMapTiles, OpenStreetMap contributorsODbL 1.0 (data); OpenFreeMap serves the tiles free of charge · Checked: — |
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| Address search and lookup | Photon (Komoot), built on OpenStreetMapODbL 1.0 (data); Photon is free to use, without a key · Checked: — |
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| Seismic hazard (ESHM20) | EFEHR / ETH Zürich — European Seismic Hazard Model 2020ESHM20, released 2022 — PGA, 10% exceedance in 50 years, on rock · CC BY 4.0 — cite Danciu et al. (2021), doi:10.12686/a15 · Checked: — |
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| Elevation and slope (Copernicus DEM) | ESA / Airbus Defence and Space — Copernicus WorldDEM-30, via AWS Open DataCopernicus DEM GLO-30, TanDEM-X radar data 2011-2015 · Copernicus WorldDEM-30 licence — free, redistribution and commercial use allowed with attribution (not CC BY 4.0 — a separate EU/ESA licence; see notes) · Checked: —Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. |
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| Land cover (ESA WorldCover) | ESA WorldCover consortium, via public AWS S3ESA WorldCover 2021, v200 · CC BY 4.0 — © ESA WorldCover project 2021 / περιέχει τροποποιημένα δεδομένα Copernicus Sentinel (2021) · Checked: — |
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| Sea temperature (NOAA OISST) | NOAA National Centers for Environmental Information / Physical Sciences LaboratoryOISST v2.1 monthly long-term mean climatology, 1991-2020 period · Δημόσιο κτήμα (έργο της κυβέρνησης των ΗΠΑ) — ελεύθερη αναδιανομή, χωρίς εγγραφή · Checked: — |
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| Land and minor islands for the display mask | Natural EarthNatural Earth 10m land 5.1.1, minor islands 4.1.0, lakes 5.0.0 · Public domain · Checked: — |
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| Projected coastal erosion | European Commission Joint Research Centre (JRC), LISCOAST2020 projections for sandy coasts, RCP4.5/8.5, horizons 2050 and 2100 · CC BY 4.0 — © European Union; cite Vousdoukas et al. (2020), Nature Climate Change · Checked: — |
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