Yep, that sounds about right.
If a previous post on here was correct, Plaquemines Parish is pretty much toast.
I'll be it's hard to see where the river starts and stops now because the hurrican likely obliterated its current course.
The Corps keeps full time dredging equipment in the mouth / delta area because of shifting sand bars and shoals. With the storm surge, large waves and rain caused flooding there is a HUGE mass of sediment moving around right now. Moving ships in at this time may just mean more people in need of resque.