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Flooding and coastal erosion

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Identified six areas of action and put forward 47 recommendations.
The toolkit is based on an evaluation of the effectiveness of recent flood risk management schemes.
This TAN provides guidance which supplements the policy set out in Planning Policy Wales in relation to development and flooding.
Over 3,800 properties all around Wales will benefit this autumn and winter from the coastal erosion risk management programme.
Flooded house

We are responsible for developing flood and coastal risk management policy in Wales.  

We largely fund flood and coastal activities undertaken by operating authorities across Wales.

Flooding is an important issue for Wales and one which we take very seriously. It is a constant but unpredictable threat that can occur at any time during the year, although the risk of flooding is greatest during the period October to March.

In Wales, there are around 208,500 properties that are at risk of flooding from rivers or the sea and around 163,000 properties at risk from surface water flooding. Changes in our climate, such as more severe storms and wetter summers and winters, will increase the risk of flooding. Therefore, there is a greater chance that flood defences and drainage systems alone will not prevent flooding.

Defence against flooding will grow greater in significance as time progresses and is currently one of our most significant challenges. Where properties are protected by flood defences the risk of flooding is reduced but can never be eliminated.

We need to ensure our future systems operate effectively when they are required to and also have preparations when those systems are beaten.

Flooding Emergencies


If you are worried about flooding you can sign up for Natural Resources Wales Floodline Warnings Direct service. Interested? Just call Floodline on 0345 988 1188.


Information on current flood warnings is available on the Natural Resources Wales website (external link)


General information on how to prepare and deal with flooding can be found on the Directgov website (external link).


Shoreline Management Plans

A Shoreline Management Plan (SMP) is a non-statutory policy document for coastal flood and erosion risk management planning. It takes account of other existing planning initiatives and legislative requirements, and is intended to inform wider strategic planning. There are 4 Plans covering Wales: