I realize my use of the term "flood level" may be unclear-this 2008 flood is worse than the 1993 flood because the crest is much higher and it affects a large geographical area.

Here's the figures from that excerpt I quoted in my first post to this thread:

To give some perspective on just how bad it is, here are the river crests for the previous big floods:

Previous record flood in 1929: 20 feet
The Flood of 1993: 19.3 feet
Current river level in downtown Cedar Rapids: ~30 feet and still rising.

-snip-

I think I remember reading somewhere that the river level in downtown Cedar Rapids, Iowa got to 31.5 feet before beginning to recede today. That's 12.2 feet more than in 1993.