Tuesday, May 3, 2011

Levee Blown

NYT:
EAST PRAIRIE, Mo. — Ruben Bennett, his back bent and his fingers gnarled from a lifetime of labor, has lived all of his 88 years on an expanse of rich farmland here, just below where the Ohio River pours into the Mississippi. He survived his share of floods — including the record-setting one that swept away his boyhood home — but he has never run from one, until now.
For days he returned repeatedly, despite a mandatory evacuation, with the hope of riding out another major flood in his longtime home above his shuttered grocery store. But under threats from law enforcement officials, and the cajoling of his family, he finally agreed to retreat. As explosives tore open a protective levee Monday night, he waited for the news that his home has been destroyed.
“I can’t tell you how I feel, because there no feeling for that,” he said hours earlier, sitting in his daughter’s house — nearby, and safe from possible flooding — where he has been sleeping on the couch. “I hate it so bad.”
The Mississippi River, already at record levels here, keeps rising, fed by punishing rains. As the flood protection systems that safeguard countless communities groan under the pressure, federal officials executed a fiercely debated plan to destroy a part of the levee holding back the river in the area Mr. Bennett calls home for the greater good of the region.
With a flash of light and a massive rumbling that shook windows miles away, the Army Corps of Engineers set off explosives at 10 p.m. along the first of several sections of the earthen barrier, sending 550,000 cubic feet of water a second across the 130,000 acres of farmland known as the spillway. There were 90 homes in the spillway, but under the cover of darkness it was impossible to gauge the initial devastation. “This doesn’t end this historic flood,” said Maj. Gen. Michael J. Walsh, who commands the Mississippi Valley Division of the corps, explaining that the river may rise again in a few days. “This is not the end, this is just the beginning.”
Col. Vernie L. Reichling Jr., commander of the corps’ Memphis District, said the blast was successful, calling it “historic as well as tragic.”
The move was a desperate effort to lower the river, which had climbed to about 61 feet in nearby Cairo, Ill., to head off calamity up- and downriver. In Illinois, the pressure on the levee created a geyser, forcing the evacuation of Cairo. In Louisiana, there was concern about whether levees could survive a record flood.
And it raised a new risk in this part of Missouri, which had challenged the plan unsuccessfully in court, because any water filling the spillway would put pressure on an untested secondary levee that protects more populous communities.
Some of the 200 residents in the spillway have argued that the young shoots of corn and knee-high carpet of wheat offered evidence enough that the area was worth protecting. Their claims will be soon be forgotten as the attention shifts downriver. But for these people, some of whom watched the blast, the flooding represents the beginning of a long process they say will drastically change their lives.
That is just a brutal situation.  I remember reading about how the river bottom fields were covered in 3 feet of sand after the Mississippi River topped levees in the flood of 1993, and how it would take a couple of years for those fields to recover.  It would feel worse knowing those fields were intentionally flooded, but that is part of the Army Corps job in maintaining those levees, sometimes they just have to be removed.  When you have a record flood, those choices have to be made.  It will look like a pretty poor decision if those secondary levees fail, but I assume the Corps believes that is unlikely.

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