Confidently understand flood risk and develop optimal solutions to manage the impacts of climate change.

Have you upgraded to Flood Modeller 5.1.1? Upgrade today and access more than 80 enhancements

Be confident in your modelling results

Developed for over 40 years, Flood Modeller has become the #1 software for modelling rivers, surface water and urban drainage systems.


Independently benchmarked, Flood Modeller  is trusted by government agencies, utilities, insurers and engineering consultants across the globe due to its speed and accuracy.

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Independently benchmarked


Government approved

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Fast and

Everything you need in
one package

Seamlessly combine surface and sub-surface flows using the 1D river solver to model open channels, or its 2D solver to model surface water, whilst linking to the 1D urban solver to model the interaction with and the impact on the drainage system.


This flexibility makes it an ideal choice for a range of applications, from site specific studies to modelling entire catchments or countries.

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Model open channels

Model drainage systems

Model surface water


Accelerate your simulations using our industry-leading 1D and 2D solvers - some of the fastest and most robust solutions available.


More than 40 structures, including weirs, culverts and bridges are available, allowing you to improve the accuracy of your model.


Access a range of globally applicable hydrological and tidal boundaries for your 1D and 2D models, directly within the software.


A user-friendly GIS interface that delivers an intuitive environment for building, running and visualising models.


Integrated with third-party software, incorporate existing models and systems directly within Flood Modeller.


Streamline your projects, improve productivity and reduce costs using the extensive Flood Modeller toolbox.

Quick to learn and

intuitive to use

Switch to Flood Modeller and benefit from our user-friendly GIS interface where you can build, run and visualise your models.


We provide a wide range of learning resources to get you started, including an extensive user guide, getting started guides, free webinars and various online training course to fast track your learning.

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User-friendly interface

Online learning resources

Webinars and  training

Improve productivity and efficiency 

Streamline your modelling with Flood Modeller’s extensive toolbox. Save time and money on your projects by simplifying the building, running and visualisation of your models. 

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Automate model build

Accelerate run time

Communicate risk quickly


Improve your understanding of flood risk

Use the integrated capabilities to model the river, urban drainage and surface water flood mechanisms across an entire catchment.


Accelerate your model development

Take advantage of the enhanced productivity and efficiency features to automate your model build.


Enhance your modelling experience

Benefit from our user-friendly modelling environment to quickly build, run and visualise your models.

Rely on a responsive

team of experts

Our dedicated team of experts are on hand to give you the support and guidance you need. Whether you’ve got a question about a particular feature, need us to help troubleshoot a model or are unsure which licensing solution is most appropriate for your business, we’re here to help. 

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Dedicated support team

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Telephone and email support


Extensive user manual

Accelerate your project


Integrated with Flood Modeller, our award-winning Flood Cloud service enables you to seamlessly run your flood modelling simulations in the cloud. It empowers users to run compute-intensive simulations faster, at greater scale, and more cost effectively than ever before.


Reduced run time


Unlimited licences

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Charges by the minute