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Coastal Defence Improvements at Llanfairfechan

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Conwy County Borough Council are seeking funding from the Welsh Government to improve the coastal flood defences around the county coastline to face the challenge of climate change and future sea level rise.

Llanfairfechan is one location where we’ve identified schemes that could attract funding to reduce the coastal flood risk and improve amenity access onto the foreshore.

What are the plans for Llanfairfechan?

We have created detailed designs for proposed improvements to the coastal defences at Llanfairfechan. The proposal is to increase the height of the existing wall by approximately 500mm along a 725m stretch to improve the level of flood protection.

The main focus of the scheme is improving the defences, but we would also like to provide other benefits if possible. This includes improving the promenade car park.

We registered two planning applications in February 2024, for the coastal defences and the car park.

View the planning application and submit comments

Please search for application number 0/51422 (coastal defences) and 0/51419 (car parking)

There will be a public information event on the proposals in Spring 2024.

Why are you considering changing the defences?

The current defences at Llanfairfechan provide some protection to the promenade and town against the risk of flooding from the sea. The frequency and severity of storms is expected to increase over the next 100 years, because of climate change. The defences need improving to increase their effectiveness and reduce the current and future risk to the town.

How will the scheme make a difference?

Height is the most important factor in reducing flood risk from high water levels. We carried out geotechnical and structural surveys in 2023 to find out whether the existing defences are stable enough to allow us to build on top. This means we could raise the height without having to demolish and replace the entire defence.

The Cob

A section of sea wall along the Cob at Llanfairfechan was breached during a storm on 5 October 2021. This sea wall is not owned by the Council, but a public right of way is located behind the breached section.

On 23 November 2021, the Cabinet approved carrying out emergency rock armour repairs at an estimated cost of £275,000 for the failed section, with an attempt to recover costs subject to identifying the landowner.

There was further damage caused by storms in late November and December and we carried out additional structural assessments and surveys.

Protection work started in March 2022 to install rock armour at the Cob, where the sea wall has collapsed due to storm damage.

The second phase of work in September 2022 extended and completed the rock armour. The accessible path was also reinstated.


Flood Risk & Infrastructure Section

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