Across the South and lower Midwest , floodwaters have already covered about 3 million acres of farmland , eroding for many farmers what could have been a profitable year for corn , wheat , rice and cotton , officials said . Louisiana : A parish official orders evacuation , " ` ` the fear of the unknown '' Mississippi : A Mississippi levee engineer says the next few days will be ` ` stressful '' The Army Corps of Engineers plans to open one - fourth of the Mississippi spillway 's gates .
Louisiana : A parish official orders evacuation , " ` ` the fear of the unknown '' Mississippi : A Mississippi levee engineer says the next few days will be ` ` stressful '' The Army Corps of Engineers plans to open one - fourth of the Mississippi spillway 's gates .