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Public-images-osm logo.svg hazard_occurrence
Group: Hazards
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasmay be used on relations
Status: unspecified

This key is used to store occurrences of hazards. The project OpenHazardMap is aimed at collecting the hazard zones, i.e. the areas that are potentially prone to hazards, but it is also important to store actual events, both to corroborate the probabilistic approach of risk assessments and to start creating a worldwide database of local events.


The date of occurrence must be stored.

Given that hazards often occur on the same area, multiple values can be stored. E.g. hazard_occurrence=25-01-2005,28-03-2006,01-02-2012