High risk of flooding from rivers

River flooding happens when a river cannot cope with the amount of water draining into it from the surrounding land.

What does ‘high’ mean?

High means that each year, this area has a chance of flooding of greater than 1 in 30 (3.3%).

This takes into account the effect of any flood defences that may be in this area. Flood defences reduce, but do not completely stop the chance of flooding as they can be overtopped or fail.

Floods destroy - be prepared

Don’t wait until it’s too late. Prepare for flooding by following some simple steps to reduce the impact of flooding on your home or business.

Planning a development

This information is not suitable for use in land-use planning. If you are planning a development, you need to use the Welsh Government's Development Advice Map. This is because for planning purposes you need to use information based on flooding without defences.

Further information

Flood risk in this area is ‘significant’ as per the definition in the ‘Statement of Principles’ agreement between the UK Government and the Association of British Insurers (ABI). ABI members voluntarily continue to meet their commitments to their existing customers under this agreement until a replacement is implemented. For more information, see:

You can use the information in this area to see the approximate areas that would flood.

If you have any further questions on how to prepare for flooding, please call Floodline on 0345 988 1188.

This area may be at risk from other types of flooding