Due to global warming, sea level rise over the years around Miami Beach has gotten to the point of no return in some areas. Seawater has been rushing backwards through drains and back onto city streets, flooding streets even when it isn't necessarily raining out. It's a weird phenomenon that the city of Miami Beach is rectifying without much help from Florida state government.
This video shows how the city is doing its part to make sure that even if sea levels continue to rise, that at least water will still be pumped out. The plan here is to set the city up for good for about 30 years while they work on a longterm solution.