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Chalgrove Flood Alleviation Scheme

One of the most evident consequences of climate change is an increase in the intensity and frequency of extreme weather. Taking steps to reduce risk, the South Oxfordshire and Vale of White Horse District Council appointed Greenford Limited to undertake flood alleviation works in Chalgrove.

Greenford excavated and cleared the ditches along the edge of the fields in Chalgrove, increasing the size of the ditch where necessary to hold greater excess rainfall. Using a culvert flow diversion structure, most surplus rainwater will now divert away from the village.

The water will divert to a newly installed underground 750mm diameter pipe. The 240-metre-long pipeline is encased in concrete.

The pipe has been expertly finished with two red brick culvert headwalls at both the inlet and outfall of the pipeline.

Greenford has constructed a 3-metre-wide limestone road above the new pipeline, making sure this new road is strong enough to withstand use by heavy farm machinery by installing a layer of structural Geogrid which acts to spread out load weight across the surface area of the road.

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