Construction has commenced on an ambitious new flood defence scheme designed to protect 2,800 homes from rising flood threats. The Welsh government primarily funds this initiative, which extends 3 km along the foreshore from Tidefields Road to the River Rhymney estuary. Over the next three years, this project will fortify Cardiff against rising sea levels and severe weather events, including those anticipated due to climate change, protecting properties for the next century.

 

The project will see the installation of 100,000 tonnes of rock armour along the coastline to mitigate erosion and manage high tides, supplemented by sheet piling and fortified earth embankments at the river estuary. Additionally, enhancements will be made to the Wales Coast Path within the project boundaries, boosting community access and usage. These comprehensive efforts reflect a strong commitment to collaborative community protection and ensuring a sustainable future for Cardiff and its inhabitants. The project is a result of years of research and planning, taking into consideration the potential impact of climate change and its effect on coastal communities. With sea levels projected to rise significantly in the coming decades, it is crucial to take proactive measures to protect vulnerable areas like Cardiff.

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In addition to protecting properties from flooding and erosion, this project will also have long-term environmental benefits. The installation of rock armour will create new habitats for marine life, promoting biodiversity and supporting local ecosystems. Furthermore, the improved access to the Wales Coast Path will encourage outdoor activities and promote a closer connection between residents and their natural surroundings.
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Based on comprehensive assessments, a selection of tailored construction solutions have been determined for distinct sections of the project, which covers approximately 3km of coastline and river frontage. Each chosen option optimally balances technical, financial, and environmental considerations, catering to the unique needs of each section. The construction methods are as follows:

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Location 22: Along the west bank of the Rhymney River, the existing earth embankment will be elevated to meet required flood defence standards, including the addition of a double flood gate for additional protection at the entrance to the Rhymney River Motor Boat, Sail & Angling
Club off Rover Way.

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Location 32: New earth embankments will be built along segments of the west bank of the Rhymney River from the Lamby Way road bridge to Page Drive, enhancing existing flood defences set back strategically from the river.

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Location 32: Adjacent to Rover Way and Lamby Way, concrete erosion protection mats will be installed to fortify flood defences, with their base secured beneath the riverbed by rock armour.

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Location 32: Alongside Lamby Way, new sheet piles will be introduced to strengthen the natural riverbank’s flood defences.

 

Location 32: At the river meander beside Rover Way, the construction of new sheet piles with a concrete capping beam will be implemented to enhance erosion protection in the confined space available.

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Location 42: Increase the flood embankment height between Lamby Way and A4232 Southbound.

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Location 52: Increase the flood embankment height between A4232 Northbound and rear of 46 Page Drive (at the rear of Starollot Community Gardens).
 

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