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Focus on the Data – Surface Water Flooding

Promap Functionality

Through the viewable data layers monthly subscription the Surface Water Flooding dataset can be overlaid onto the OS Openmap, Aerial. OS Vectormap Local and OS Mastermap topography layers, included in prints and the data exported to a CSV file. The data is also utilised for the Landsearch and Sitecheck Assess reports available from Promap.

What does it provide?

More than 80% of insurance claims for flooding over the last decade have been caused by surface water flooding. This dataset indicates the overall extent of a surface water (pluvial) flood event. This map assesses flooding scenarios as a result of rainfall with a 1 in 30, 1 in 100 and 1 in 1000 chance of occurring in any given year.



Dataset Name: Surface Water Flooding

Supplier: Environment Agency, Natural Resources Wales and Leading local flood authorities.

Coverage:  England and Wales

Update Cycle: As notified by the suppliers

Free or Subscription:  Free within Promap


See samples of the Surface Water Flooding data in action in :

Landsearch – Click Here

Sitecheck Assess – Click Here

Viewable Layers – Click Here


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