Reminds me of the one in ankeny a few years ago that just parked right over here and dropped 9 inches.
So glad my power held out, unlike many in Ankeny that night. My sump pump was running overtime and still rising.
I think the year or so before we got something like 7 inches in a couple of hours in WDM. That was the day I found out there was an obstruction in one of my downspouts that led to water overtopping and dropping right into the landscaping right next to the house. It was also the storm where we found out that due to the nature of how our sump pump was positioned in the pit, the water pouring into it was hitting the top of the float and not letting it fully extend to turn on. My pit was also completely sealed up by the radon system installation, but I was fully prepared to cut it open if necessary. I watched as the water filled that pit, getting ever closer to filling up to the point where the it would backfill the subdrain and eventually start seeping up through the basement floor.
Out of frustration, I banged on the outlet pipe with my flashlight and the pump miraculously kicked on. What followed was probably over 12 hours, between my wife and I, babysitting that pump and tapping on the pipe when the pit would fill up. Somewhere around 3 or 4 in the morning then inflow of water slowed enough to where it wasn't hitting the float any more and it would kick on without assistance. I cleared the gutter obstruction (a ball that must have been thrown on the roof by the kids) and hoped that would take care of it.
When that 2018 event rolled through, a similar thing happened with bad overtopping of the gutter, so we had to babysit the pump again, though not as rough this time. Turns out there was another ball further down the downspout left from the previous owner's kids. After clearing that and installing a new style of sump pump, I don't think it's even kicked on more than once since 2018. Although the wife still gets nervous whenever we get more than a half inch of rain.