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Nant Cae-Dudwg Flood Alleviation Scheme

11 residential and 3 Commercial properties in the Cilfynydd area will benefit from a project to help protect them from flooding.

Thanks to support from the Welsh Government’s Flood Risk Management Grant, European Regional Development Fund and Rhondda Cynon Taf Council capital funds a scheme will be implemented to alleviate historical flooding issues centred around the culvert inlet along side Pant Ddu Road and the locally known Lido area. 

The project will comprise the renewal and raising of the flood wall at the inlet together with a reconfiguration of the inlet grill.  As natural debris from the hillside is seen as a contributing factor exacerbated by the continual failure of the upstream “Lido” area, the “Lido” area will be modified to stabilise the collapsing walls, retain debris and allow fish to pass.  This will minimise the amount of debris travelling downstream onto the inlet grill and minimise the damage to the grill from on-going debris removal.  A warning system will be installed on the inlet to provide maintenance teams with advanced warnings of potential blockage.

Risk of localised flooding continues to be an issue during and after the project and RCTCBC Flood Risk Management team continues to work with our partners in the community and the Waste Management and Streetcare divisions of the Council to minimise that risk. 

However, the risk of flooding significantly increases where there is illegal tipping of rubbish in and around the streams and culverts.  We therefore request that the general public only uses official and legal means for disposal of their rubbish.

Further information on the Council’s waste collection service and enforcement policies can be found at or by calling 01443 425001.