My daddy's company had a dispatcher's trailer (like a little temporary office) in Fourchon, Louisiana. Dad told me that there were barges on top of the levees, but I think they were oil field barges. These things are HUGE. Like four stories tall and I cannot even estimate how long and wide. If a grain barge is anything like that, I can imagine that it could destroy the levee if it was being hurtled into it.
Katrina was unbelievable. My dad was telling me that one of the bouys (that has got to be misspelled!) measured waves in excess of 80 feet. In the Gulf of Mexico!! That is incredible.
He has been back and forth trying to salvage company property and he says SE LA looks like it was hit by an atomic bomb. Total complete devastation. He says the pictures on tv don't "do it justice."