Drainage in Newbury
Newbury is a market town in West Berkshire. The River Kennet and the Kennet and Avon Canal both run through its heart. Because the town grew up beside water, its drains and flood risk are closely linked to the river.
The Kennet flows through the town from west to east, and homes on both banks face flood risk in heavy rain. It is a chalk stream fed by springs from the Berkshire Downs, so it reacts fairly fast when the chalk fills with rain. Low areas such as Northcroft, the town centre and Greenham feel this most. The Environment Agency looks after flood defences on parts of the river, yet owners still need to keep their own drains in good order.
The canal runs beside the river and, in many places, sits higher than it. Locks and embankments hold it there. While the canal itself rarely floods, it can raise ground water in nearby homes, and a breach or overflow would affect the surrounding drains.
The old centre around Bartholomew Street, Northbrook Street and the Market Place has drains of many ages. Some date from the Georgian period, with Victorian and later additions on top. Because of that mix, the layout can be hard to map. New building in the centre, such as Parkway and the Camp Hopson site, has added modern drains beside the old ones.
Chalk lies under the Downs to the north and west, and it lets rain soak through before it comes out as springs that feed the Kennet. On the valley floor, where Newbury sits, the ground mixes gravel, silt and clay from the river. It behaves differently with the season and the water table, while higher ground has its own problems where chalk meets clay with flints.
Wash Common, south of the centre, sits on higher ground with better natural drainage. However, its homes from the 1930s onwards have ageing clay and pitch fibre pipes. Greenham, to the south-east, mixes older housing with new homes on the former Greenham Common airbase, where modern drains join the wider Newbury network.
Taken together, river flood risk, the canal, the old centre and the chalk valley make drains a tricky matter in Newbury. Because every property differs, a proper check of your own drain is the best way to know your risks.