Atchafalaya case history in river management.

Environmental-physical dynamics of birds foot deltas:

Taken from USGS site: http://gulfsci.usgs.gov/missriv/aerials.html.

Taken from USGS site: http://gulfsci.usgs.gov/missriv/aerials.html.

Taken from USGS site: http://gulfsci.usgs.gov/missriv/aerials.html.

Taken from USGS site: http://gulfsci.usgs.gov/missriv/aerials.html.

The geologic history of the Mississippi delta:

The Atchafalaya control structure and New Orleans.

Quotes from John McPhee, The Control of Nature:

"Rabalais works for the U.S. Army Corp of Engineers. Some years ago, the Corps made a film that showed the navigation lock and complex of associated structures built in an effort to prevent the capture of the Mississippi. The narrator said, "This nation has a large and powerful adversary. Our opponent could cause the the United States to lose nearly all her seaborne commerce, to lose her standing as first among trading nations . . . . We are fighting Mother Nature . . . . It's a battle we have to fight day by day, year by year, the health of our economy depends on the victory."Big question - for how long will the Army Corp be able to maintain the status quo?

"As we traversed the Mississippi, the depth, which was being sketched by a stylus on graph paper, dropped steadily and kept on dropping the closer we came to the bank. We were only a few swimming strokes from shore when the depth reached a hundred feet. It was notable that the riverbed was fifty feet below sea level more than three hundred miles from the mouth of the river, but what particularly astounded me was the very great depth so close to the west bank. It showed the excavating force of a tremendous river. The foundations of skyscrapers are rarely that deep. And this was the bend where the water swung off and into Old River Control - a bend armored with concrete where the Mississippi might break free and go to the Atchafalaya."


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