A Flood Risk Assessment (FRA) will determine the flood risk to a site from multiple sources. It is usual for a FRA to assess the flood risk from rivers, sea, surface water, sewers or groundwater. The level of risk is in part determined by future site users and/or sensitive receptors.
If an unacceptable risk is identified the Flood Risk Assessment will determine whether any mitigation measures are required and what measures are feasible to reduce the risk to an acceptable level.
The Environment Agency planning guidance contains criteria that sets out what is expected in a Flood Risk Assessment for different development scenarios depending on the size of the site, which flood zone the site is located in and its vulnerability.
As a minimum, the National Planning Policy Framework (NPPF) states that a Flood Risk Assessment must be submitted:
The scenario(s) which your site falls under has already identified as part of our initial site review when we prepared your proposal.
You can also see the flood risk by simply visiting the ‘Flood map for planning’ website and put in the site post code or grid reference. However, whilst this map may show which flood zone the site is in, it does not show the risk of flooding from all sources.
To ensure we provide you with a compliant assessment, your Flood Risk Assessment will be carried out in accordance with the Local Plan, best practice and planning guidance including the Environment Agency’s planning guidance, DEFRA’s sustainable drainage systems (SuDS) guidance and the National Planning Policy Framework (NPPF).
Our Flood Risk Assessments are prepared by experienced consultants who are committed to providing you with technically robust reports that are tailored to meet your needs.
The scope of your Flood Risk Assessment will include:
The report will determine whether site is at risk of flooding and give actionable recommendations depending on the accuracy and resolution of the data gathered during the assessment.
This could include a broad range of mitigation measures and/or more detailed flood risk assessment modelling if the site is found to be very vulnerable and at a high risk of flooding.
We would need to have the following items covered before we can get started on the Flood Risk Assessment:
Additional information which would be very helpful, but not essential for a Flood Risk Assessment:
Before we can finalise the Flood Risk Assessment report and the SuDS strategy aspect, we will need to agree:
NB. Depending on the quality and availability of data received from third parties, surveys, plans and ground conditions etc. there may be the need to supplement the assessment with additional surveys (including those listed above). Site specific flood modelling will not have been included as part of this proposal, although the flood regime may be assessed using existing Environment Agency approved flood models in the first instance.
The need for any supplementary information will be flagged up as the assessment progresses and could affect timescales for delivery of the assessment. The cost of or any supplementary tasks and any other third party information (i.e. sewer records) will be confirmed if required.
We will aim to provide a report within three to four weeks of having all the information we need from you. It is important that we have all the information listed above before we can start the assessment.
If our timescales are dependent on the availability of information from other third party stakeholders, external advisors and access to undertake an inspection (i.e. existing drainage), please ensure you have allowed additional time for this in your programme.
This is especially important because getting information back from the Environment Agency or Lead Local Flood Authority is often taking much longer than their usual 21 day statutory response time.
Our consultants are available to guide you through the complex process of undertaking a Flood Risk Assessment, so you can get your site approved and built.
We will strive to keep things as simple and jargon free as possible, so please feel free to contact the person who sent your proposal with any clarifying questions.
We are members of CHAS; a SSIP approved Health and Safety scheme.
Our team are ready to get started.
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