Useful Resources
Design guidance for drainage assets for adoption
https://www.water.org.uk/sewerage-sector-guidance-approved-documents
GOV.UK Flood Mapping
Defra mapping giving details such as Source Protection Zones
River Flow and Rainfall Climate change allowances
Planning Practice Guidance - advice on SuDS
https://www.gov.uk/guidance/flood-risk-and-coastal-change#para55
Ciria Website - For access to the SuDS Design Manual and other Environmental Guidance
https://www.ciria.org/
https://www.susdrain.org/
Susdrain - SuDS Guidance and Resources
Non-statutory SuDS Design standards
https://www.gov.uk/government/publications/sustainable-drainage-systems-non-statutory-technical-standards