I seem to recall the subject of the worldwide flood has cropped up a number of times on this forum and been discussed often and in some detail. Here is one such example:

THE HISTORY RULES THREAD

There is much to be said for the arguments in favour of a worldwide flood if one is willing and interested enough to read/view what has already been given.

I suggest that perhaps one may wish to re-read the thread again if they have forgotten what has already been discussed/addressed. Additions/concerns regarding the information given could perhaps go from there. It will help if people stick to the subjects on each thread as much as possible.