- Are waves included in the Coastal Flood Boundaries?
- Coastal Flood Boundaries - additional help and further information
- How are levels within ‘Inland Extensions’ or ‘Estuaries’ derived?
- How can I generate my Base Tide Curves?
- How does the Coastal Flood Boundaries inform us about flood risk around the UK coast?
- How is sea level rise accounted for in the Coastal Flood Boundaries?
- How often is the Coastal Flood Boundaries dataset updated?
- How should I use Coastal Flood Boundaries levels in estuaries and tidal rivers?
- I am concerned about the large differences in values in some locations and the effects on my project
- I’ve been given mean high water springs (MHWS) and highest astronomical tide (HAT) predicted Tide Levels by another source. They don’t match up to those in the Coastal Flood Boundaries. Which should I use?
- Levels have fallen in my area of interest since the previous Coastal Flood Boundaries update. How can this be when sea levels are known to be rising?
- What are the Coastal Flood Boundaries?
- What are the key outputs of Coastal Flood Boundaries 2018?
- What has been done to update the Coastal Flood Boundaries in 2018?
- What has changed in Coastal Flood Boundaries 2018?
- What information is included in the extreme sea levels shapefiles?
- What is meant by Annual Exceedance Probability (AEP) and which extreme sea level probabilities are included?
- What is the accuracy of the Coastal Flood Boundaries extreme sea levels?
- What is the base year for Coastal Flood Boundaries levels?
- What is the vertical datum of the Coastal Flood Boundaries Level?
- Where can I access the Coastal Flood Boundaries data and guidance documents?
- Who should use the Coastal Flood Boundaries (CFB) data?
- Why are regular updates, and therefore likely change in the estimates, necessary?
What are the Coastal Flood Boundaries?
Created: 03 October 2019 Updated: 03 October 2019
Successful management of coastal flood risk and coastal protection work requires the best available information on extreme sea-levels (ESLs) and other important drivers of coastal flood and erosion risk. The Coastal Flood Boundary Conditions for UK Mainland and Islands (CFB), first published in 2011, supports this work with a robust and consistently derived evidence base. The CFB dataset includes:
a continuous and spatially consistent set of ESLs around the coasts of England, Wales, Scotland, Northern Ireland, Isle of Man and Jersey
a means of generating appropriate total storm tide curves for use with the extreme sea levels
best practice guidance on how to use these new datasets
This 2018 CFB update was carried out for the UK Coastal Flood Forecasting partnership, which includes the Environment Agency, Scottish Environment Protection Agency, Natural Resources Wales and the Department for Infrastructure Northern Ireland. The work was conducted by a project team including JBA Consulting, Professor Jonathan Tawn of Lancaster University and the National Oceanography Centre. The project also included extensive consultation with UK practitioners and subject matter experts.