"Glenn Ashmore" wrote in message
news:bRIVe.25298$hp.3729@lakeread08...
Looking at the Google Earth satellite pictures of the flooded area there
are
no barges in the 17th Street canal or anywhere close to the other break.
As
I understand it the 17th street canal break started as an underwash that
broke through the backing berm. When the berm washed out there was no
support for the wall.


The barge never actually escaped from Alcatraz and stayed in the levee.
Early on, when I watched the film footage, the levee top was destroyed to
what looked like a depth of 5 to 8 feet or so but that was it.
As the hole was just a bit wider than the barge was long and a witness
reported a lot of noise resembling an explosion, the surmise early on was
that the barge beat the top of the levee apart but didn't get through.

--
John R. Carroll
Machining Solution Software, Inc.
Los Angeles San Francisco
www.machiningsolution.com