Source data, hazard distribution grids and maps and population exposure distribution table

This section is divided into three parts covering: (1) the source data used in e-atlas; (2) the unclassified (geographic information system (GIS) format) and classified (GIS and portable document format (PDF)) versions of the different hazard distribution maps obtained through application of the different models; and (3) a table summarizing the distribution of people exposed to hazards, by level of intensity.

Source data

The source data used for the application of the different models in the three WHO Regions covered in this version of the e-atlas (i.e. Africa, Europe and the Eastern Mediterranean) are accessible from the table below.

Some of the layers cannot be accessed in GIS format owing to redistribution restrictions (in these cases, the map is only available in PDF format). The redistribution rights and data use constraints for these layers can be found in the corresponding metadata profile.

The method used for homogenizing this dataset can be found under Methodology.


Layer GIS file Regional map
Digital elevation model
Flow accumulation
Hydrographic network Not Available
International boundaries Not Available
Number of past flood events
Past significant earthquakes
Past significant volcanic eruptions
Tectonic plate boundaries
Precipitation (5 year return period)
Road network Not Available
Soil texture (simplified) Not Available
Soil texture (sub soil) Not Available
Soil texture (top soil) Not Available
Soil type Not Available
Tectonic activity
Weather stations


Hazard distribution grids and maps

The unclassified (GIS format) and classified (GIS and PDF format) spatial distribution of the different hazards obtained through the methodology and implementation documents of the three WHO Regions covered the e-atlas are accessible from the table below. The redistribution rights and data use constraints for these layers can be found on the corresponding metadata profile.

Hazard Unclassified Classified
GIS files Metadata GIS files Regional map
Heat wave


Population exposure distribution table

Using GIS, the numbers of people exposed to each hazard at each intensity level have been estimated by combining the hazard distributions maps with a population distribution grid adjusted to the United Nations’ projections for 2010 (United Nations, Department of Economic and Social Affairs, Population Division (2009). World Population Prospects: The 2008 Revision). Click here to download these tables in excel format.

Please refer to Modelling the spatial distribution of five natural hazards in the context of the WHO/EMRO Atlas of Disaster Risk as a step towards the reduction of the health impact related to disasters (El Morjani et al, 2007) for more information about the method used for this calculation.