Storm Sally

we got 5" of rain 21 years ago here and my living room was under a foot of water. All the 5 apts in my building drained to my back yard and it flooded my unit. Father in law came over, dug a 5 foot long ditch from my backyard to a lower point next to my place and it drained in 10 minutes...brilliant! I cant imagine what 20" would do to anyone's property that wasn't set up for it, ie. 60" stilts! Stay safe!