The map is incorrect for the Netherlands, because it simply looks at surface height. Large parts of the Netherlands are already below sea level and have been fo

The map is incorrect for the Netherlands, because it simply looks at surface height. Large parts of the Netherlands are already below sea level and have been for hundreds of years. Dutch water defense planning has already considered rising sea levels and increased the "Delta height" for dikes. They're made to resist 1 in 4000-10,000 year floods, depending on the value of the area they protect.