Dry pavement !Speculative Design
Another field that I have been research on the innovation that focusing no preventing flood which is call “Permeable Pavement”. This kind of innovation is help to keep road being dry. This kind of idea could be useful for the place where there are at risk of flash flood.
Here is the video of how the Permeable Pavement work.
However this kind of idea only fix the problem when there is just small flash flood but it could not protect the major flood incase if the river Thames water level is over limit and there is no water way to drain off the flood.