A random thought: what if the Boring company created a tunnel under the riverbed. Spring loaded doors upstream would open up to the tunnel when the water was deep enough (weight), representing a coming flood. But the flood water would be mostly diverted down the tunnel to safety exit miles down stream.
A couple of small dams would be another option. They would supply warning and warning time. But the destruction would be the same.
I don’t think he is dead. The body at the time didn’t match. I don’t think we will hear from him directly. I am guessing a series of video shorts were created, one for each major perp. This allows selective release with the appropriate timing. The DS thought everything was sealed by the judge. But not this. This is speculation, but remain patient.
The State Department is real swampy.