Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what steps he is taking to investigate the cause of floods in (a) Calne and (b) other areas that have not experienced flooding for decades.

Over 300 properties flooded across 50 communities in Wiltshire alone during the winter of 2023/24, which was the wettest since records began 1871. These same areas of Wiltshire also experienced heavy rainfall in September 2024. The rural catchments that have seen numerous floods during this period are sensitive to both rainfall intensities and durations. It is understood that it has been a combination of both high intensity and prolonged durations during these storm events combined with saturated catchments resulting in localised flooding.

Wiltshire Council are in the process of undertaking Flood & Water Management Act 2010 Section 19 flood reports investigating the flooding issues experienced across the county last winter. We will input information and evidence into these reports.

We are working with flood risk management authorities, through a Wiltshire Rural Runoff project, to improve understanding of the causes of flooding, and it will look for potential for interventions to reduce the impacts of these types of flood events. The Calne catchments is in one of the five focus areas, and the evidence and understanding is being gathered this winter with support of the Wildlife Trusts and local landowners and farmers.

As these types of rainfall events are expected to become more frequent with climate change, The Environment Agency are exploring how they can make our flood warning service more effective for these types of rural catchment, that respond quickly to heavy intensity rain.