It was amazing to me how much of Miami looks like it had been swampland that had been re-engineered to hold houses by creating landfill surrounded by canals and retention basins. This is a Google Maps image of the housing neighborhoods surrounding a random part of the tollway we drove on. I looked up their water management department and it explained that this elaborate system is designed to keep home foundations dry, but that one should expect regular flooding of streets. That is part of the design.