Contact Mike 07584 623267 or Chris 07877 251644

Groundwater Flooding Risk Assessment

For a quote, please email or call 07877 251644

If your property search or local authority has identified your property or land as being susceptible to groundwater flooding then we can provide technical support on groundwater flooding risk.  The data and assumptions used to generate these property search reports is often highly simplified and generalised over large areas. This means that many properties are frequently interpreted as susceptible to groundwater flooding when there is no risk.

Hydrogeologists at Hydrogeo can undertake a detailed study  by producing a Groundwater Flooding Risk Assessment, providing a clear conclusion of the level of groundwater flooding risk at your property.

If you are buying, selling or developing a property our groundwater flooding reports can provide the information that you and your local authority, insurer, mortgage company or solicitor require in order to support decisions.

What is groundwater flooding?

Groundwater flooding is caused when the water table rises up from rocks or soils above ground level, causing flooding to occur at the surface.  Groundwater flooding tends to occur after long periods of high rainfall.  The rainfall infiltrates into the ground causing the water table to rise in response above normal levels.  Groundwater flooding is likely to occur in low lying areas, areas where groundwater is close to surface or in subsurface structures such as basements and cellars.

Groundwater flooding is also known as clearwater flooding because unlike surface water flooding from rivers and streams, the water is often clear and clean due to the lack of silt.  Also unlike surface water flooding, it can be difficult to protect a property from groundwater flooding as flood defences such as embankments cannot prevent water rising from beneath the ground.  Groundwater flooding can last for long periods of time as groundwater slowly falls, and may contribute to surface water flooding. There may also be no clear indication that a property is susceptible to groundwater flooding – properties can be susceptible even if they are far away from any rivers or streams.

What is covered in a Groundwater Flooding Risk Assessment?

At Hydrogeo, our Groundwater Flooding Risk Assessments assess the following factors:

  • Groundwater levels, both beneath the site and locally
  • Groundwater features, such as springs, bournes and wetlands
  • Geological and hydrogeological mapping
  • Borehole logs and groundwater supplies
  • Topography
  • Historical mapping
  • Historical groundwater data and incidents of flooding
  • Available groundwater digital datasets

We assess all available data to allow a professional judgement of the risk of groundwater flooding to be made.

Why should I choose Hydrogeo?

Hydrogeo have undertaken Groundwater Flooding Risk Assessments for a wide range of clients and sites. At Hydrogeo we are a team of qualified geologists, hydrogeologists and contaminated land specialists with over 40 years of experience in geology and groundwater.  All of our staff are either Fellows of the Geological Society or Chartered Geologists.

The findings of our reports are presented clearly and concisely. We can recommend whether further action is required, detailing next steps such as layout rearrangement, installation of drainage or changes in design such as the tanking of basements. Alternatively, a site may be found to have a negligible risk of Groundwater Flooding and require no further protection.

Contact us today

As every site is different, please contact us to discuss your project and requirements. If you would like to speak to someone at Hydrogeo about Groundwater Flooding please call 07877 251644 or email  Alternatively, you may use the contact form at the top of this page.

Information and Guidance

Information on Groundwater Flooding – British Geological Survey

Groundwater Flooding FAQ – UK Groundwater Forum

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