Flood defences must provide for climate change in sea levels

08 November 2006
 
New flood defences must take into account rising sea levels caused by climate change, according to guidance by the Department for Environment, Food and Rural Affairs.
The guidance recommends flood defences are built for the long term by factoring in increasing rates of sea level rise which is likely to accelerate from the current 2.5mm to 4mm a year to up to 15mm a year between 2086 and 2115.
Defra says the new guidance will help authorities to calculate when and how best to build flood defences to allow for climate change and sea level rise.
It also includes updated allowances for other climate change-related changes, including an increase in the intensity and frequency of coastal storms, and rainfall events affecting river catchments and urban surface water flooding.

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