Great Lakes vs Mississippi Usefullness

[kalos72]

I have done that basic research, thank you.

But really, if there is a General, of what unit? There isn't anything in any ORBAT I have found that shows where USACE gets its people or how they are organized. Surely 8 people in New Orleans aren't doing all the work for that district?

Do they use regular Army Engineers? Are certain US ARMY engineering units assigned to support them or a district?