COP26: New map shows 20% of French coast at risk from erosion

Almost 20% of the French coastline is threatened by erosion and rising sea levels, a new interactive map shows, as climate change conference COP26 opens in Glasgow today (Sunday, October 31).

The interactive map, compiled by FranceInfo, shows exactly how this will affect the French coastal landscape. 

Using data from the Centre d’études et d’expertise sur les risques, l’environnement, la mobilité et l’aménagement (Cerema), experts compared aerial images dating from the 1930s to 1950s with more recent photos.

It shows that almost 20% (18.6%) of France’s coastline, or 900km, is ‘retreating’. So far, a total of 523 communes will “have at least one sector affected”. 

And the 59 most-affected municipalities may experience as much as 1.5 metres of erosion per year on average.