Geospatial Data
Copernicus Digital Elevation Model (DEM)
- Provider
- European Space Agency (ESA) / Copernicus
- Resolution
- 30 m global (GLO-30)
- License
- Copernicus Data Space Ecosystem License
- Usage
- Elevation, slope, flow accumulation, terrain analysis, 3D visualisation
- URL
- https://spacedata.copernicus.eu
"Contains modified Copernicus Sentinel data [2024], processed by ESA"
JRC Global Surface Water
- Provider
- European Commission, Joint Research Centre (JRC)
- Resolution
- 30 m global
- License
- Copernicus Data Policy (free and open)
- Usage
- Historical water occurrence (1984–present), flood history scoring
- Reference
- Pekel et al. (2016), Nature 540, 418–422
- URL
- https://global-surface-water.appspot.com
"Source: EC JRC/Google" — Pekel et al. (2016)
GloFAS — Global Flood Awareness System
- Provider
- Copernicus Emergency Management Service (CEMS), ECMWF
- Version
- GloFAS v4.0
- Resolution
- ~5 km global (0.05° grid)
- License
- CEMS-FLOODS datasets licence
- Usage
- River discharge thresholds, return period analysis (2–100 year), upstream catchment area
- URL
- https://global-flood.emergency.copernicus.eu
"Contains modified Copernicus Emergency Management Service information [2024]"
Open-Meteo Flood API
- Provider
- Open-Meteo, Switzerland
- Data source
- GloFAS via Copernicus Climate Data Store
- License
- CC BY 4.0 (non-commercial); commercial license available
- Usage
- Real-time and 90-day forecast river discharge data
- URL
- https://open-meteo.com/en/docs/flood-api
Open-Meteo Historical Weather API
- Provider
- Open-Meteo, Switzerland
- Data source
- ERA5 reanalysis (ECMWF / Copernicus Climate Change Service)
- Resolution
- 9 km global, hourly/daily, 1940–present
- License
- CC BY 4.0 (non-commercial); commercial license required for production use
- Usage
- Historical precipitation analysis for extreme rainfall frequency assessment (40-year daily records, 1984–2024)
- Attribution
- Zippenfenig, P. (2023). Open-Meteo.com Weather API. Zenodo. https://doi.org/10.5281/ZENODO.7970649
- URL
- https://open-meteo.com/en/docs/historical-weather-api
OpenStreetMap
- Provider
- OpenStreetMap contributors
- License
- Open Data Commons Open Database License (ODbL)
- Usage
- Water feature names, types, and locations (waterways, lakes, dams, coastlines)
- URL
- https://www.openstreetmap.org/copyright
© OpenStreetMap contributors
Methodology & Scientific References
JRC Depth-Damage Functions
- Provider
- European Commission, Joint Research Centre
- Usage
- Depth-damage curves for Expected Annual Loss (EAL) calculation
- Reference
- Huizinga, J., De Moel, H., Szewczyk, W. (2017). "Global flood depth-damage functions." JRC Technical Report. EUR 28552 EN.
- URL
- JRC Publications Repository
IPCC Climate Projections
- Provider
- Intergovernmental Panel on Climate Change
- Report
- IPCC Sixth Assessment Report (AR6)
- Usage
- Sea-level rise scenarios (SSP1-2.6 through SSP5-8.5) and climate change adjustment factors to 2100
- URL
- https://www.ipcc.ch
Disclaimer
TerraFlood provides modeled flood risk estimates for informational purposes. Our analysis is based on publicly available geospatial datasets and statistical models. Results should not be used as the sole basis for property purchase, insurance underwriting, or construction decisions. Actual flood risk may differ due to local factors not captured in our data sources, including drainage infrastructure, flood defenses, recent land use changes, and weather events exceeding historical records. Consult qualified professionals for site-specific flood risk assessments.