SuDS Design and Evaluation Essentials

Important new guidance on Sustainable Drainage Systems – or SuDS – is being distributed by 16 forward thinking local authorities across England. The Guide provides a fresh approach to the design and evaluation of SuDS with easy to understand and practical information for all those involved with the development process.

SuDS provide a way of managing rainwater by mimicking natural drainage and are a requirement for all new major developments. To ensure successful and affordable Sustainable Drainage Systems, they should be fully integrated from the start of the design process along with other aspects of development design.

Developers and their consultants – including architects, landscape architects and engineers – as well as local authorities require clear, consistent and concise guidance on how to implement and evaluate SuDS design.

This ground breaking ‘Sustainable Drainage Design & Evaluation Guide’ follows the design process from concept, through outline, to detailed design and provides the reader with an easy to follow, step by step, process. The Guide is complementary to statutory requirements such as the National Planning Policy Framework, as well as CIRIA’s 2015 SuDS Manual and other recognised guidance.

Produced by Robert Bray Associates and McCloy Consulting – both leading SuDS design practices –  the Guide was developed with the support of 16 local authorities across England who felt a need for an accessible document that they could integrate into local planning policy and process. The Guide draws upon the experience of the authors, gained over 20 years of practical SuDS application.

The Guide creates a shared vision of SuDS for all involved in the development process, enabling design and evaluation to meet agreed standards and ensuring that SuDS are maintainable now and in the future.

The ‘Sustainable Drainage Design & Evaluation Guide’ will be distributed by each LA involved with the Guide via their website and can also be previewed on

The pioneering Local Authorities who have enabled the development of the guide are;

  • Lewisham Council
  • Lincolnshire County Council
  • London Borough of Bexley
  • London Borough of Enfield
  • London Borough of Hackney
  • London Borough of Hammersmith and Fulham
  • London Borough of Haringey
  • London Borough of Hillingdon
  • London Borough of Merton
  • Luton Borough Council
  • Oxford City Council
  • Oxfordshire County Council
  • Peterborough City Council
  • Royal Borough of Kensington and Chelsea
  • Worcestershire County Council
  • North Worcestershire Water Management

Wyre Forest District Council
Bromsgrove District Council
Redditch Borough Council

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