There are a few flood models: Hydroplate, Catastrophic plate tectonics (CPT), Asteroid impacts.  (note: These flood models assume that the Genesis Flood is a fact.)  The Hydroplate model has popular general public interest but few adherents among creationary scientists.  Rains come from water ejected from below crust.  Flooding is also by sinking of continents.  CPT is promoted by some PhD creationary scientists, problems with it are noted by other equally degreed creationists.  Flooding is by tsunami from oceans, rains are a side product.  Asteroid impacts are credited in two models  Asteroid impacts w/CPT and Asteroid impacts w/vertical tectonics.  There are critics of both among creationary scientists.  Flooding is by tsunami from oceans, rains are a side product.  Discussions of these models are found in creationary publications, which are, of course, automatically rejected as FRINGE so....... So all you get are anti-creationists misrepresenting creationists and claiming this is what creationists say.  No one cares what creationists actually say nor why. It's all automatically pseudoscience because everyone knows that creationism is pseudoscience.  It doesn't matter if they are misrepresented or not.  They're FRINGE freaks anyway....