Approvers Hub

Welcome to the susdrain Approver Hub. This section of our website provides tools, knowledge and resources which will help you to meet corporate objectives to protect your local community from flood risk.

This page provides a wealth of resources and evidence including; case studies, videos and fact sheets supporting the inclusion of SuDS on all projects.

July Spotlight

This month's spotlight is on our SuDS Manual. The one stop resource for all things SuDS.

Download your free copy.

Case studies

View more case studies here.

Fact sheets

View more fact sheets

Videos and webinars

View all of susdrain's videos here.


Take a look at more blogs and join the conversation here.

Latest news and updates

View all susdrain news here.


Upcoming events and training

Click here to view the susdrain events calendar.


Click here to view the training calendar.

Click here to view all CIRIA events.


  • Analysis of evidence including costs and benefits of SuDS construction and guidance - Download here.
  • Comparative costing of surface water drainage - Download here.
  • Costs and benefits of Sustainable Drainage Systems - Download here.
  • Lamb Drove Sustainable Drainage Systems (SuDS) Monitoring Project - Download here.

Comparative costing

  • Comparative costings for surface water sewers & SuDS - Housing, Caledonian Road, Islington  Download here.
  • Comparative costings for surface water sewers & SuDS - Mixed housing development, Hadley, Shropshire  Download here.
  • Comparative costings for conventional drainage and SuDS - Mixed housing development, Daniels Cross, Shropshire Download here

View all evidence documents

Other useful websites and links


Get in touch. 

We are always looking for new and exciting content so if you have something you would like to contribute or have ideas for new research, a fact sheet or a case study which you would like us to produce please get in touch  by contacting, 

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