From: John Cuccia 

On Fri, 02 Sep 2005 11:54:08 -0400, Monte Davis
 wrote:

>The coastal marshes are eroding not
>primarily because of Eeeevull Developers (although that doesn't help),
>but precisely *because* we've kept the river in one relatively swift,
>dredged and re-dredged channel, so sediment is carried out into deeper
>water instead of spreading across the delta as it used to.

That channel is growing, too.  At one point (Southwest Pass, I believe), it
now reaches the edge of the outer continental shelf.  As it gets longer and
longer, dredging becomes more and more difficult, and it takes ships longer
and longer to reach ports.

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