Natural catastrophe losses in 2013 were dominated by floods and the trend in weather patterns suggests that flooding is set to increase in frequency. So the need for accurate, clear flood mapping has never been greater. Our hazard maps cover the globe, and are available in three resolution levels. These can be licensed individually or as a whole, depending on what’s needed.
Find out more about our hazard maps.
Our event sets have been created by applying advanced statistics to historical river discharge data. They capture the inherent uncertainty associated with future flooding by describing the spatial pattern of severity and frequency of many possible future events. In this way, they serve to extend the observational record of extreme flows. Interesting fact: so far we have simulated some 600,000 events in our probabilistic models.
Global Flood Event Set
Our Global Flood Event Set (GFES) is a multi-peril event set which covers a wide range of possible events in their natural frequencies, including those caused by hurricanes. GFES is created using advanced statistical analysis of historical precipitation, river and hurricane track data to generate an extensive set of flood events at observation points around the world. North America is available now, with the rest of the world to follow by early 2016.
Interesting fact: there are 325,609 hurricane events in the North America event set.
We have event sets available immediately for:
- Europe river flood - which can be licensed either as a pan-Europe event set or by individual countries
- Great Britain river flood - which forms a crucial component of our high resolution Great Britain River Flood Probabilistic Model
- Thailand river flood
- Malaysia river and surface water flood
- India river and surface water flood
To learn more about our event sets, get in touch.
Built Environments and Vulnerability Functions
Flood loss varies depending on the type of structure affected – a detached house will differ from a bungalow and commercial sites may suffer different losses to a residential site.
With this in mind, our built environment structures provide a probable distribution of structure types, acting as a reliable proxy for insurers lacking structural information. They also allow the most appropriate vulnerability functions to be applied, translating the potential hazard into clear and concise monetary loss.
We have built environment models available for twelve European countries, Malaysia, Thailand, India and Great Britain.
There are currently over 1.5 million unique post-codes in the residential component of JBA Risk Management’s Great Britain built environment model - to learn more get in touch.
Variable Resolution Grids
A variable resolution grid (VRG) is a group of polygon cells of different sizes. Very fine resolution cells are applied to areas of high exposure, such as towns and cities, with increasing cell sizes applied to areas with a lower risk density such as rural or wilderness areas. Varying the resolution by exposure concentration improves computational efficiency whilst still providing high resolution information where it matters most - in populated areas. Most of our probabilistic models incorporate a VRG to support coordinate level analysis (and require a portfolio to have geocoded lat/long coordinates on the WGS84 coordinate system). A VRG is also used to calculate and output some of our Annual Damage Ratio datasets.