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Nant Y Fedw Flood Alleviation Scheme

Over 100 properties in the Ynysboeth area will benefit from a project to help protect them from flooding.

Thanks to support from Rhondda Cynon Taf Council’s Capital Fund, the European Regional Development Fund and Welsh Government’s Flood Risk Management Grant, a scheme will be implemented to alleviate historical flooding issues centred around the Nant Y Fedw Culvert within the Nant Y Fedw housing estate in Ynysyboeth. 

The project will include the installation of a new section of grille at the main culvert inlet. The removal and replacement of an improved inlet headwall system on one of the minor inlets.

Within Abercynon Road, the surface water drainage is to be improved to allow for exceedance flows from watercourses. These improvements will also include the construction of a new outlet system to link in with the main culvert below Abercynon Road.

The existing main culverted system adjacent to the main highway is to be modified to enable improvements to the flows. These improvements have been designed to reduce the likelihood of future flooding. However, if the water within this system were to exceed the maximum capacity of the system or a blockage, then the flows would run onto the highway which is to have new drainage kerbs installed which will accept these exceedance flows.

An existing drainage system between properties within Nant Y Fedw estate is to be increased in capacity at the low point in the highway where flood water has historically accumulated.  This system will result in the construction of a new piped system which will connect to the main culvert at Cross Street.

Sections of the main culvert are to be repaired and the whole length of the main culvert is to be lined to improve capacity and strength.  Most of the culvert repairs will be carried out within the culvert to reduce the disturbance to local residents and other road users. 

However, access into the culvert will be required via existing manhole covers and at several other locations. Other sections of piped systems in the area of Abercynon Road will require lining works to be undertaken.

To enable the construction of some of these important infrastructure works, it will be necessary to have temporary traffic control measures in place. 

Risk of localised flooding continues to be an issue during and after the project and RCT CBC 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 on the Waste Services pages or by calling 01443 425001.

Abercynon Road Highway Improvements

The Council is proposing Highway Improvement works to Abercynon Road, Ynysyboeth.

It is intended that the works will run in parallel with the flood alleviation scheme to minimise extended disruption to the local area.

The project will comprise footway widened to allow for passing pedestrians and the construction of new fencing which will safeguard pedestrian users. The footway widening will result in the narrowing of the main road.