It is a situation devoid of happy choices: Flood hundreds of square miles of rich agricultural land, sweeping away farms, homes, villages; or, risk the Mississippi flooding Baton Rouge and New Orleans, oil refineries and port facilities. The former choice had to be made, but at least the residents of the affected area were informed on a yearly basis, in writing, that this event was always a possibility.
An account of the levee opening and map of the affected area is here.
Still recovering from the oil spill, facing an historic flood, Louisiana merits our prayers, and Red Cross donations would be welcomed as well.