wow, that's a lot of water!!!
I have a small bright side for you...
In my last house we had a bad rainstorm one day. Inches of water per hour and many basements in the area flooded. Mine did as well. There was a main storm drain in front of my house and it was completely full and the rain water was inches deep on the street. All that water created a lot of back pressure, which pushed sewer back into my house... human sewer. I found a couple of "gifts" on my basement floor. Let's just say I used many many many many many gallons of bleach for that cleanup.
Inside me is a thin woman trying to get out. I usually shut the bitch up with a martini.