Winchester Shops

Take part in survey to help Winchester flooding investigation

Following the significant flooding experienced across Winchester on the 27th August 2020, Hampshire County Council is undertaking a formal investigation into the causes and effects of the flooding.

Councillor Rob Humby, Deputy Leader of Hampshire County Council and Executive Member for Economy, Transport and Environment, said:

I promised a full investigation into the flooding in Winchester last summer and I am pleased to say it is well underway. Part of this investigation is a survey, and I would encourage as many people to take part in this as possible so that we can understand how the flooding affected people.

The County Council is committed to doing all it can to reduce the risk of flooding for communities across Hampshire. The rainfall we saw on 27 August was exceptional with 35mm falling in just 15 minutes, that is half of the average August rainfall.,.

The findings of this investigation will be published and we will use them to try and identify actions that will either reduce the likelihood of similar events happening again in the future, or reduce their impact. Extreme weather events such as these also underline the importance of all our efforts to mitigate and tackle the impact of climate change – whether those are extremes of heat, cold or rainfall.

The survey is open until Friday 15 January 2021 via the County Council’s web pages:

It is important landowners maintain their ditches and watercourses for which they are responsible to help prevent flooding. Watch a short video about responsibilities of landowners here

Find out who to report a flood or possible cause of flooding to at: In an emergency where there is a danger to life call 999.

If you believe the flooding is from a main river contact the Environment Agency at: or phone 0800 80 70 60

Urgent issues on the highway can be reported to the County Council by phoning 0300 555 1388 during office hours and 101 outside of office hours.

Surface water flooding on the highway can also be reported direct to Hampshire County Council at

For other incidents of flooding please report these at:

Flood prevention guidance on reducing the risks and impacts of flooding, with links to the organisations involved in different types of flooding, is available at:

Advice from Hampshire County Council, other local authorities and the Environment Agency on managing the risk of flooding is available at:

Advice on how householders can be prepared:

To sign up for flood alerts visit

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