This is the Simon Estes Amphitheater in downtown Des Moines. On the left is what it should look like, and on the right is what it currently looks like. Yikes.
For more pictures of the flood thus far (I hear it's supposed to get worse this week), check out Des Moines: It's Kind of a Big Deal. I'm going to try to update as the week progresses, so we'll see what happens!