Flood Risk and Drainage Consultants

A flood risk assessment (FRA) is a document that reviews a development in its proposal form to assess it against the risk of flooding, whether that be from groundwater, river (fluvial), surface water (pluvial), estuary/coastal (tidal), or from sewer sources. It should also take the surrounding area into account and whether the development poses a flood risk to areas nearby. Generally a scheme can be in a flood risk zone 1, 2 or 3.

An FRA is required under the National Planning Policy Framework (NPPF) and the Environment Agency (EA) guidance on development and flood risk when a development is located in Flood Zone 2 or 3,  a Critical Drainage Area, or the site is greater than  or equal to 1 hectare in size, for sites in Flood Zone 1.

You’ll also need an FRA if your development is taking place within 20 meters of an EA main river. EA activity permits will be required if the proposal includes temporary and permeant works within 8m of a EA river and 16m of a tidal EA river.

We provide professional hydrology consultancy and advice for many different planning applications that span the whole of the UK.

These can include standard reporting for sites within flood zone1 to more complicated reports requiring flood compensation, sequential testing, exception testing and drainage impact assessments.

What Design Capabilities Do Our Flood Risk and Drainage Consultants Offer?

Everything that we do is compliant to BREEAM requirements to ensure your absolute peace of mind. With a flexible and efficient approach to your needs we help many clients gain the planning approval that they need in the timeframes needed.

We have a vast breadth of knowledge that sees us communicating with the Environment Agency, insurers and local planning authorities daily. What we do requires a completely bespoke approach to each of our client’s needs and we offer a professional approach that gets you what you need and when you need it.

Syntegra has experts specialising in flood risk, below ground drainage design, highways design, transportation, foul sewage and utilities assessment, geotechnics and land quality to inform critical decisions on infrastructure design. It’s an illustration of the importance of getting infrastructure right to ensure a site works seamlessly for all parties and provides ‘best value’ engineering.

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Our expert team of planning specialists, sustainability consultants and Chartered Engineers are here to help.

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Frequently Asked Questions

1 What is a Hydrology and Flood Risk Assessment and why is it important for planning applications?

A Hydrology and Flood Risk Assessment evaluates potential flood risks to a development site and proposes mitigation measures. It is crucial for UK planning applications to demonstrate compliance with national planning policy, ensuring the safety and sustainable development of the proposed site.

2 How do your services address drainage design and sustainable urban drainage systems (SUDs)?

Our services include comprehensive SUDs Design and Drainage Strategy, alongside Below Ground Drainage Design. These are essential for effectively managing surface water runoff, mitigating flood risk, and supporting sustainable site development in accordance with planning requirements.

3 What is the scope of your Flood Risk Assessment services in the UK?

Our expert Flood Risk Assessment services are provided across the UK to support various planning applications. We assess potential flood risks, develop mitigation strategies, and ensure compliance with regulatory standards for safe and sustainable site development.