Coastal Flood Hazard

Simply use the slider to drown your town.

As a web-based system, users do not need to install any GIS software to interact with spatial data.

The data cannot be edited or altered in any way

The viewer is compatible with multiple devices and operating systems.

LiDAR data providers
We make use of LiDAR data to produce the elevation models for this DeST, these providers may include national, provincial and local government departments and any private entities who are willing to contribute
DFFE
The GIS-based bathtub model was produced in-house by the DFFE and is being updated as technologies advance
Everyone else
NGOs, NPOs, citizen groups and anyone interested in contributing their data

Can I use the DeST to create a scenario based on real parameters?
No, the DeST is 'static' and does not accept any input parameters of dynamic data such as wind speed, water level etc. The outputs rendered only considers the increase in water level above mean sea level.
What is a bathtub model?
A bathtub model is commonly used in GIS to depict elevations below a given threshold that may be flooded during a storm event or due to sea level rise. It only considers elevation and does not take dynamic variables into account.
What is the benefit of a bathtub model?
The bathtub model is not scenario based and can therefore show, based on the ground elevation and independent of dynamic variables, areas that may be prone to flooding. Knowing where susceptible areas can help in planners implement mitigation measures before events occur. It may also inform medium and long term planning.
Are there other models that use dynamic variables?
Yes, have a look at the Coastal Operations at Sea DeST that relies on operational ocean models.