FLOODING DUE TO THE TIDE HAS BEEN HAPPENING FOR CENTURIES IN FLORIDA.  It was true during the initial settlements created by the Spanish and it is true now.

"Due to changing geography such as subsidence, and poorly planned development, tidal flooding may exist separate from modern nuisance flooding associated with sea level rise" " In the New Orleans area on the Gulf Coast of Louisiana, land subsidence results in the Grand Isle tide gauge showing an extreme upward sea level trend."

Of course when you build in a TIDAL SWAMP you have to expect tidal flooding.