Guidance: River modelling: technical standards and assessment
Summary
The Environment Agency has published guidance on river modelling technical standards and assessment for use in hydrological analysis and hydraulic modelling. It notes that the Fluvial Modelling Standards are being updated, with completion expected by the end of 2027, and includes a consultation survey closing on 6 November 2026.
Why it matters
Flood risk evidence and hydraulic modelling are important inputs to residential development, planning, and property risk assessment. Surveyors involved in flood risk reviews or advising on sites near rivers and coasts should be aware of the updated standards and associated assessment tools.
Key points
- Sets out standards for building and reviewing hydraulic models for flood risk management decisions.
- Fluvial Modelling Standards are under update, with completion expected by end of 2027.
- A consultation survey is open to support the standards update and closes on 6 November 2026.
- Guidance has been updated to reference coastal modelling standards and flood risk assessment use cases.
- An Excel-based fluvial model assessment tool is available to help assess model quality.
Organisations:
Environment Agency
Locations:
GOV.UK
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