Officials said opening the Morganza Spillway will help stabilize river levels but at the same time the controlled flood could be disastrous to about 2,500 people.
Morgan City could see up to twenty feet of water.
If the state gets the final okay to open up the Morganza Spillway, the Mississippi River will be diverted into the Atchafalaya.
That means the potential for water to rush into places that are dry right now.
Since the Bonnet Caree Spillway has been opened a massive amount of water will get pushed into the Pontchartrain basin.
There are concerns the rush of fresh water could do a number on the environment and fisheries there.