Report flooding

If it’s a flooding emergency you should focus on the safety of yourself and your family

Dial 999 if it is an emergency and you or someone else is in danger

Learn more about the different types of flooding and who is responsible for managing the risk.

Who to report a flooding issue to
floodingflow No No No Yes Yes Yes Yes Is water coming from a public sewer or a water supply site? Is water coming from a main river or the sea? Is water coming from the highway (e.g. a highway drain)? Is water coming from land or a ditch next to your property? Report to the relevant body Report to the Environment Agency Or, report the problem to Hampshire County Council, choosing option ‘private land, property boundary ditch or roadside ditch’ You might be responsible as a riparian owner, our guidance contains more details. Report to Hampshire County Council, choosing option ‘Road, pavement, cycle path, drain’ Southern Water Thames Water Wessex Water Other water companies
When the Lead Local Flood Authority investigates flooding

When we receive a report of flooding this is logged within our database. An initial review of information will be undertaken, with more information gathered from the reporter where necessary. The outcome of this review will determine the next steps taken.

Our flood investigations guidance sets out when and how we will investigate flooding. We will investigate ‘significant’ flooding in accordance with the requirements of Section 19 of the Flood and Water Management Act 2010 and these investigations are published below.

Report a flood

Track a report of flooding

Previous published flood investigations

Where ‘significant’ flooding has occurred in accordance with the requirements of Section 19 of the Flood and Water Management Act 2010 and a flood investigation report is available, these are shown below.

Significant flooding is defined as:

  • flooding that affects 20 or more properties internally in one flood event within the same location
  • flooding that affects significant lengths of highways affecting 20 or more properties and lasts for a period of 3 hours from the onset of flooding.

Winchester flood investigation (September 2020) – pending report

Following the exceptional rain event on Thursday 27 August 2020, when more than half of the city’s average August rainfall fell in just 15 minutes (Environment Agency) Hampshire County Council is undertaking a full report into the flood event which followed.

Under Section 19 of the Flood and Water Management Act (2010), each Lead Local Flood Authority across the UK are required to undertake investigation and reporting of ‘significant’ flooding events to ascertain the cause and whether all flood risk management authorities undertook their responsibilities before, during and after the event.

The County Council will be undertaking the investigation in partnership with Winchester City Council, the Environment Agency, Southern Water, the emergency services and local residents/business owners. The results of the investigation and a full report will be published on this website in due course.

We have appointed specialist consultants JBA and Satius to assist us in this work who have a considerable amount of experience in relation to flood risk management.

As part of the investigation, information has been sought from local residents and businesses and over 100 responses were received to our questionnaire identifying 37 properties with internal flooding as well as a considerable level of external flooding and other impacts.

This information has been taken into account in assessing the impacts of flooding, identifying the causes and flood mechanisms.

The results of the S19 investigation will be published in full in due course and this will inform what actions may be feasible or appropriate to reduce the impacts of a similar event occurring in future.

Fleet Flood investigation (August 2015) 

Romsey flood investigation (December 2013/January 2014)

Further work is being undertaken on a flood mitigation scheme for the Romsey area. See further information on Romsey flood alleviation scheme

Buckskin flood investigation (February/March 2014)

Further work is being undertaken on a potential flood mitigation scheme for the Buckskin area. See further information on Buckskin flood alleviation scheme

Other flood investigation reports