From CNN:

(CNN) — Water spilled over two levees on the Mississippi River
on Wednesday, surging into west-central Illinois, covering fertile
farmland and pushing residents from their homes, officials said.

The U.S. Army Corps of Engineers for the Mississippi Valley said water
flowed over the top of one levee, but local officials had a different
account, reporting that the levee — near Meyer, Illinois — breached
in two places about 6:20 a.m., pouring water into Hancock and Adams
counties.

Let’s just roll it all into oneinvestigation