And again, how much of that is global sea level rise vs subsidence? Florida doesn't exactly have a history of responsible coastal development. Combine that with mangrove and wetland destruction, high seasonal rainfall and hurricanes and it's not hard to imagine why the subsidence would be worse there than elsewhere. Carolinas are in a similar predicament because they have all of the drainage from the Appalachians.i never said it was happening fast, but certainly it has changed in my lifetime of 50 years
If you were to take the global average of all of the NOAA datapoints I have linked, the difference is maybe a foot per century.