Louisiana : Army Corps of Engineers liable for catastrophic flooding during Katrina . New Orleans Mayor Ray Martin says he may ` ` open up the door '' for more suits . He calls the ` ` a surprise , '' says he expects feds to appeal . Overall , the storm damage covered more than 90,000 square miles and displaced nearly 300,000 people , causing more than $ 81 billion in damage . Plaintiffs awarded damages from Lower Ninth Parish and St. Bernard Parish .
Louisiana : Army Corps of Engineers liable for catastrophic flooding during Katrina . New Orleans Mayor Ray Martin says he may ` ` open up the door '' for more suits . He calls the ` ` a surprise , '' says he expects feds to appeal . Plaintiffs awarded damages from Lower Ninth Parish and St. Bernard Parish .