Flood Risk and Drainage
We support clients with flood risk, drainage strategy and surface water management advice to help unlock sites, satisfy planning requirements and deliver resilient, sustainable schemes.
Flood risk and drainage constraints can affect site viability, planning approval, design coordination and long-term performance.
Early advice is critical to avoid delays, and costly redesign.
We provide clear, practical guidance to help clients understand flood risk and drainage strategies and progress schemes through planning and technical approval.
Our Flood Risk and Drainage services
Pre-development SuDS & Floods Appraisal
We will provide you with a due diligence summary report detailing what sources of flood risk may be present and whether further assessments are required. Potential options for SuDS and flood risk mitigation will be considered in the report.
Read moreSustainable Drainage Strategy (SuDS)
We can develop a SuDS strategy for your development as a separate piece of work or in conjunction with your flood risk assessment. Every development will need one of these. We can also provide SuDS strategies for SuDS Approval Body (SAB) approval, which are currently required in Wales and are due to be implemented in England.
Read moreDetailed Site-Specific Flood Risk Assessment
A detailed site-specific assessment of the flood risk to your site, including review of hydrological model data, where applicable, and online mapping and data, along with consultation with regulators (e.g. EA, LLFA, sewer undertaken and IDB as appropriate) and project team. Constraints and opportunities will be reviewed and solutions developed to support your development proposal and planning application.
Read moreFeatured Projects
Greenfield Land | Ground Investigation
Roxalina Street | Ground Investigation
Common Questions...
Do I need a flood risk assessment for planning permission?
You're likely to need one if your site is in Flood Zone 2 or 3, is over 1 hectare in Flood Zone 1, or is identified as being at risk of surface water flooding. Check with your local planning authority.
What is SuDS and why is it required?
Sustainable drainage systems (SuDS) manage surface water in a way that mimics natural drainage, reducing flood risk and improving water quality. Most new developments are expected to include SuDS.
How long does a flood risk assessment take?
This depends on site complexity and data availability, but a standard assessment can typically be produced in a few weeks, with more complex sites taking longer.
Speak with an expert
Planning a site with flood risk or drainage constraints? Let’s help you find the right solution.
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How can we help?
Whether you're just starting a project or need expert support along the way, we're here to help.
Request a free, no-obligation quote today and discover how our expertise can make a difference.
