There was tons of damage. I work for a major automotive company and our entire technical center was shut down for the day due to building flooding, power outages and the like. Even though I returned the next day there were still buildings closed throughout most of last week. The IT center was pretty messed up too, they had to pull the plug on a lot of the sharepoint networking internally to try and move stuff to higher ground just in case.

The streets were super bad, cars flooded and stalled everywhere. There was tons of flooding over the walls of the expressways onto the lower ground and roads which made things worse for neighborhoods since they were already backed up to begin with.

One of my sisters lives in the main area just north of Detroit that was hit hardest and they have pretty much had to gut their entire basement and throw everything away that was down there. Her whole neighborhood pretty much has all of their basement possessions sitting curbside waiting for garbage pickup. That neighborhood is like a few hundred houses easy.

It was super crazy. I think at one point the metro Detroit area (the four to five miles north of Detroit proper in particular) had 5 or 6 inches of rain come down within an hour or two or something crazy like that.

A kind of odd thing is that I live about a 45 minute drive north of Detroit and I was so tired that night that when I got home I took a nap and woke up about 7 and decided to just go back to sleep for the night. I could hear it thundering in the distance but fell back asleep. I woke briefly at 1:30 in the morning but went back to sleep and woke up at 6 to my boss phoning me to tell me don't come in, that the tech center was a disaster zone. I had no clue as to how much it had rained in my area until my mom and brother told me that morning.