Environmental management – guidance

Preparing for flooding: a guide for regulated sites

Flood planning guide to help businesses comply with their environmental permit and the COMAH regulations.



This flood guidance helps you comply with the Control of Major Accident Hazards (COMAH) regulations and covers:

  • how to check flood risk and get more detailed information for your site
  • the flood warning codes and how to get advance warnings
  • how to prepare for a flood
  • steps to improve the flood resilience of a site

How to prepare for a flood gives more general flooding advice.