Five stages from a blank site to an adopted, maintained SuDS scheme. Quinnsite covers the full lifecycle of a UK drainage scheme. Use this page as your roadmap: each stage explains what to decide, which tool to open, and which standard you are discharging against before you move on.
A drainage design is only as good as the baseline underneath it. Map the catchment, classify the soils, run your infiltration tests, pick the right climate-change uplift and set the greenfield runoff rates you will have to match at discharge.
Under NSTS S1 every development must intercept the first 5 mm of rainfall. Under S4 and S5 the scheme must demonstrate a treatment train matched to the pollution hazard of the catchment. Plan the chain of source-, site- and regional-control components here, before you start sizing tanks.
Once the train is planned, each component gets sized against the greenfield discharge rates and the chosen design event. Attenuation, permeable paving, bioretention, swales, basins, ponds and wetlands all live here.
Pipes, manholes, gutters, channels, outfalls, pumps and exceedance routes. Check hydraulic grade lines against finished levels, pick orifice sizes to control discharge and design the overflow path for events that exceed the design standard.
Assemble the S1–S7 case, write the Flood Risk Assessment, cost the whole-life scheme, demonstrate biodiversity and amenity value, and produce the maintenance and adoption package the local authority or water company will accept.
Every tool opens with the same layout: inputs on the left, live results on the right, downloadable report at the bottom. Pick where you are today, and the workflow continues from there.