Flooding

The Environment Agency operates a flood warning system, providing information to the public, media, emergency services and local authorities.

If flooding is forecast, warnings are issued using a set of four codes. These are as follows:

• Flood Alert - flooding is possible. Be prepared!
• Flood Warning - flooding is expected. Immediate action required
• Severe Flood Warning - severe flooding. Danger to life
• Warning no longer in force - Flood warnings and flood alerts have been removed in the last 24 hours.

When there is a risk of flooding, the Environment Agency issues warnings through the media. These are broadcast on TV weather bulletins, on radio weather and travel reports, and via social media.

The Environment Agency also provides the Floodline Service (0345 988 1188). You can listen to recorded flood warning information or speak to an operator for general information and advice 24 hours a day.

View the council's Flood Plan and appendices:

• Appendix A2- Flood zones
• Appendix A3 - Areas benefitting from flood defences
• Appendix A4 - Modelled flood outlines
• Appendix A5 - Historic flooding
• Appendix A6 - Modelled breach extents
• Appendix A7 - Areas at risk from surface water flooding
• Appendix A8 - Areas at risk from reservoir flooding
• Appendix A9 - Flood warning areas map
• Appendix B - Flood warning areas descriptions
• Appendix C - Agency considerations

Fish Island Section 19 flood investigation

Once we are aware of a flood in the borough, we must investigate it. The Fish Island Section 19 report covers how we responded to the heavy rainfall on 4 January 2024.

More information

For more information on the current flooding situation, visit the Environment Agency website or call the main switchboard on 03708 506 506