About all I remember from Agnes were the caskets floating down the Occoquan. I didn't live in Ellicott City then to experience the devastation there first hand.
The 1983 Salt Lake City flood was the last straw for rogue caskets in Utah. Concrete burial vaults were already required in most cemeteries, but the '83 floods made it a 100% affair. There were enough floating caskets that the state started a program to exhume non-compliant burials, and rebury them in vaults (starting with the most vulnerable locations first, of course).
Good luck letting your basement dry. There's more weather on the way. If you're lucky, it might dump everything before it hits the east coast. I live about 20 miles south of SLC, and we had a forecast of a 20% chance of 0.03" of rain today. My rain gauge disagrees. So far: it's reading 1.9 inches; I have 4 inches of standing water in my back yard; an inch of driving rain has to be squeegeed back under my garage door every 30 minutes or so; and we appear to have 6 to 8 inches of water flowing down my street. It sure is a lot of rapidly deposited, unexpected water, for living in the middle of the #$%^@#& desert.
