Flood Risk Assessments

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Flood risk assessment is now an integral and unavoidable part of any planning application and we can provide FRAs to accompany applications by referencing the National Planning Policy Framework and Local Planning Authorities’ Core Strategies.

Flooding from rivers and coastal waters can damage property, in addition surface water flooding from overland flows can also intensify flood risk. Location, design, site use and the consequences of future climate change are factors that must be considered.

We provide Flood Risk Assessments and advice on the use of Sustainable Urban Drainage Systems (SUDS) for the development of both Brownfield and Greenfield sites. Hydraulic modelling is used to analyse the conveyance of stormwater on site, its treatment and to control runoff rates and limit these to realistic levels.

We offer expertise at planning stage for:

  • Flood Risk Assessments (Outline and full planning)
  • Surface and foul water drainage strategies including SUDS
  • CIRIA SUDS Manual compliance
  • Sequential and Exception tests
  • Calculations for pre and post development surface water runoff for varying storm events
  • Surface water flooding assessments and exceedance events
  • Overland flow modelling
  • Flood Management and Evacuation Plans



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