Flood & Water
Surface Water Drainage Report
Runoff calculations and drainage design for planning.
At a glance
- Accepted by planning authorities UK-wide
- Fixed fee, quoted up front
- Fast, reliable turnaround
- One accountable point of contact
What it is
A surface water drainage report demonstrates how rainfall runoff from your site will be collected, attenuated and discharged at acceptable rates.
When you need it
Commonly required alongside an FRA, or to discharge a surface water drainage condition.
What you get
What's included
Runoff and attenuation storage calculations
Flow-control and outfall design
Discharge point and rate agreement
Report for council/LLFA
Not sure whether you need a Surface Water Drainage Report?
Send us your site postcode and a brief description of your proposed development, and we'll tell you whether a Surface Water Drainage Report is likely to be required and what level of assessment your site may need — usually within a day, at no cost.
How it works
From quote to consent
Share your site
Send the postcode, plans and any council correspondence — we confirm scope and fee up front.
We assess & value-engineer
Our specialists prepare your Surface Water Drainage Report, finding the most cost-effective route that still satisfies the regulator.
Consent-ready report
A clear report the authority will accept, with us on hand for any queries or conditions.
FAQs
Frequently asked
Is this different from a SuDS strategy?
They overlap heavily — a surface water drainage report often forms the technical core of a SuDS strategy.
When is it needed?
Whenever surface water management is a planning consideration or condition.
Related services
More in Flood & Water
Flood Risk Assessment (FRA)
Site-specific flood risk assessments, with proportionate mitigation and no unnecessary cost.
View service →SuDS Design & Drainage Strategy
Sustainable drainage designed to meet LLFA requirements — proportionate, practical and cost-conscious.
View service →Foul Drainage Assessment (FDA1)
Waste-water drainage assessment, including the FDA1 form.
View service →Tell us about your site
Send us your location and plans for a fast, fixed-fee quote — and honest advice on exactly which reports you do and don't need.