Access to pluvial flood data

The result of computer simulations with the 2D hydrodynamic model Rana, these maps show the maximum flood depth that may occur at a particular location because of three short, extreme downpours: 70 millimetres in one hour, 90 millimetresin one hour and 155 millimetresin two hours. The maximum may occur at the end of the rainfall event or up to four hours later. Water depths below 2 centimetres are not shown. The maps also show flow paths, indicating the direction and relative volume of water flow. More information can be found in the Climate Impact Atlas map narrative.

Note: under a high-emissions scenario, these downpours have an average return period at a given location of 100, 250 and 1,000 years respectively. In the current climate, they occur less frequently.

Not linked to a specific year. The rainfall events represent a future climate under a high-emissions scenario.

About this dataset

Technical documentation (PDF)

Validation and sensitivity analysis (PDF)

For each building, this map shows the FCAB exposure score for flooding during a rainfall event of 70 millimetres in one hour. The score is based on the calculated water depth in a 0.5-metre zone immediately around the building, excluding the highest 1% of values. The score indicates which buildings are located where flooding is more likely to occur; it does not indicate how vulnerable the building itself is.

Not linked to a specific year. The rainfall events represent a future climate under a high-emissions scenario.

Framework for Climate Adaptive Buildings

FCAB exposure score – original method (PDF)

FCAB building score (PDF)