This WWII-era minesweeper once was a floating museum in St. Louis. Swept away in a 1993 flood, it has been under water in the river for most of the years since. But the ship has been exposed as the river's water level has fallen. (Photo taken on Dec. 14.) Army Corps of Engineers hide caption

itoggle caption Army Corps of Engineers

IMF chief Dominique Strauss-Kahn, waits be arraigned on sexual assault charges at Manhattan Criminal Court in New York, on Monday, May 16, 2011. Emmanuel Dunand/AP hide caption

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IMF head Dominique Strauss-Kahn is taken out of a New York police station on May 15, 2011. JEWEL SAMAD/AFP/Getty Images hide caption

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Although the Lighthouse Point Casino in Greenville, Miss., is on a barge, the rest of the facility is on land and on May 5, 2011, staff spent the day clearing it out. Rogelio V. Solis/AP hide caption

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People view Mississippi River floodwaters on Sunday, May 8, 2011, in Memphis, Tenn. Mark Humphrey/AP hide caption

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Roy Presson (C) embraced his daughters Catherine (L) and Amanda on Tuesday as they stood on the edge of State Highway HH looking out at their family farm in Wyatt, Mo. The Presson home and 2,400 acres of land that they farmed was flooded when the Army Corps of Engineers blew a massive hole in a levee at the confluence of the Mississippi and Ohio Rivers to help save the town of Cairo, Ill. Scott Olson/Getty Images hide caption

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