Flood Modelling
Our modellers build bespoke hydraulic models that challenge flood maps, quantify risk, and prove mitigation. We use TUFLOW, Flood Modeller Pro, HEC-RAS, and Infoworks to deliver defensible evidence.
Modelled data you can trust.
We design hydraulic models that align with EA and SEPA expectations. We build scenarios that test flood extents, depth, velocity, and hazard so you can plan mitigation with confidence.
We deliver model files, technical reports, and clear flood mapping outputs ready for submission.
Model build, verify, and apply.
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Data assembly
We collect survey, hydrology, and boundary conditions to build the base model.
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Model calibration
We validate outputs against historic events and published datasets.
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Scenario testing
We test baseline, climate change, and mitigation scenarios.
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Reporting and mapping
We deliver maps, statistics, and reports formatted for planning submissions.
We combine technical depth with speed.
- We provide clear evidence to challenge flood maps.
- We model complex catchments and infrastructure networks.
- We coordinate with FRA, drainage, and highways teams in-house.
Software stack
TUFLOW, Flood Modeller Pro, HEC-RAS, Infoworks, GIS.
Map your site in minutes.
Draw your site boundary and get an instant flood risk and constraints overview tailored to your parcel. Use it to brief your team, test planning viability, and move forward with clarity before commissioning detailed studies.
Map Your Site NowWhy map my site?
- Get an instant preliminary assessment of your site's constraints.
- Understand flood risk zones before investing in detailed studies.
- Identify potential planning issues early in your project.
- Receive a tailored quote based on your actual site boundaries.
- No obligation, completely free to use.
Frequently asked questions
- What is hydraulic flood modelling?
- Hydraulic flood modelling uses specialist software to simulate how water flows across a landscape during a flood event. It calculates flood depth, velocity, and extent for different scenarios — including climate change — to provide defensible evidence for planning applications and mitigation design.
- When is flood modelling required for planning?
- Flood modelling is typically required when a site is in Flood Zone 3, when existing EA flood maps need to be challenged, or when the local planning authority or EA requests detailed evidence of flood risk. Large developments and sites near watercourses often trigger a modelling requirement.
- What software is used for flood modelling?
- We use industry-standard software including TUFLOW, Flood Modeller Pro, HEC-RAS, and Infoworks ICM. The choice of software depends on the catchment characteristics, the type of flooding being modelled, and the requirements of the reviewing authority.
- How accurate is flood modelling?
- Accuracy depends on the quality of input data — including topographic survey, hydrology, and boundary conditions — and the calibration of the model against observed flood events. We validate our models against historic data and run sensitivity tests to quantify uncertainty.
- What is the difference between 1D and 2D flood modelling?
- 1D models simulate flow along a single path such as a river channel, while 2D models simulate flow across a surface in two dimensions, capturing overland flow paths and floodplain behaviour. We often use linked 1D-2D models to represent both in-channel and out-of-bank flooding accurately.