Lũ lụt sông Mississippi

Residents look out at the Atchafalaya River as floodwaters approach Melville, Louisiana May 15. Army engineers on Saturday opened a key spillway to allow the Mississippi River to flood thousands of homes and crops, but spare New Orleans and Baton Rouge. (

A NASA image shows the outlines of heavily flooded agricultural fields on the near Caruthersville, Missouri on the Mississippi river. (AP Photo/NASA)

Leandra Felton wades through rising floodwaters with items from her home in Memphis, Tennessee May 7. (Reuters)

Workmen carry a drainage hose along a temporary seawall adjacent to the Ameristar Casino in Vicksburg, Miss., as river floodwaters creep up the flood walls May 14. (AP Photo/Rogelio V. Solis)

People watch as water diverted from the Mississippi River spills through a bay in the Morganza Spillway in Morganza, La., on Saturday. A steel, 10-ton floodgate was slowly raised Saturday for the first time in nearly four decades, unleashing a torrent of

Members of the U.S. Army Corps of Engineers open the Morganza Spillway in Morganza, Louisiana. (Reuters/Sean Gardner)

A circle irrigation system on the underwater soybean crop along River Road, north of Yazoo City, Miss. Thousands of acres of corn, wheat, soybean and cotton crops are now underwater. (AP/Rogelio Solis)

Cyril Forck, age 90, catches a small perch from his backyard deck, which is usually 50 feet away from the edge of the Mississippi River, on Mud Island in Memphis, Tenn. (AP Photo/Lance Murphey)

Residents in Vicksburg, Miss. observe the water levels rise. (AP Photo/Rogelio V. Solis)

A boat filled with mattresses in Butte LaRose, Louisiana is transported away from floodwaters. (Reuters/Eric Thayer)

David Leonard, 16, helps carry sandbags to a house as water from the Morganza Spillway is expected to threaten the home in Stephensville, Louisiana. (Reuters/Sean Gardiner)