New Orleans and Baton Rouge from flooding saved cost of flooding farmland and buildings along the gutters.
Water overflowing Mississippi River flooded areas in the south Louisiana a day after engineers opened the floodgates in the hope of preventing flooding in major cities.
Residents of New Orleans and Louisiana's capital — the city of Baton Rouge for several days lived under the threat of flooding as it approaches the Mississippi flood.
Opening multiple gateways saved them from the flood, which could surpass in scale flooding in New Orleans caused by Hurricane Katrina six years ago.
However, removal of the river flow means that instead will be flooded homes and farms along the gutters. Could be affected by flooding 25,000 people and 11,000 buildings. In some areas, the water level can reach seven meters.
Authorities say that the opening of locks in the next few days will be slow and controlled, so that the people had enough time to pack and evacuation, and wild animals to move to higher ground.
However, the Governor of Louisiana Bobby Jindal warned people along the path of the water, that they should evacuate immediately, because "the water is suitable."
Officials hope that the output of water through gutters reduce pressure on the dam, downstream and protect Baton Rouge and New Orleans, as well as help protect the numerous oil refineries and chemical plants in the lower part of the Mississippi basin.
Governor Jindal said his staff will do everything possible to protect people and property in the flood zone.
The Red Cross said that a large number of shelters, where in a few weeks — until the water is gone — can accommodate residents who will be forced to leave their homes.
U.S. President Barack Obama plans to visit the flood zone on Monday. He will be the largest city in the state of Tennessee — Memphis, Mississippi, where the rise has reached near-record levels last week.