Tools for the design and evaluation of sustainable drainage systems (SuDS)

Our suite of tools provides users with the facility to estimate:

• pre-development greenfield site runoff rates
• storage volumes required to meet site flow rate controls
• suitability of different SuDS for treating site runoff
• infiltration and rainwater harvesting system storage volumes
• the type of SuDS components applicable for specific site constraints
• the impact of downstream boundary conditions on design return periods (joint probability analysis).

Featured tools

Greenfield runoff rate estimation

Tool to estimate runoff rates based on basic site characteristics information.

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Surface water storage volume estimation

Tool to estimate storage volumes required to control stormwater runoff to meet peak flow and volume control criteria.

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Water quality assessment for SuDS developments (WaND)

Tool to provide an indication of the ability of different combinations of SuDS components to treat surface water runoff.

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Help and support

FAQs

Check out our frequently asked questions about sustainable urban drainage and our tools.

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Training

HR Wallingford provides training in the use of UK SuDS tools, plus planning and design of SuDS to meet current standards and best practice.

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Register for a free UK SuDS account 

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