NATIONAL
August 30, 2012 | By Richard Simon and Molly Hennessy-Fiske
Thousands of residents north and south of the Mississippi-Louisiana border were ordered to evacuate Thursday because of the possible failure of an Isaac-battered dam. Officials are considering breaching the Lake Tangipahoa dam in order to direct water into a forested area and prevent massive flooding to low-lying residential communities downstream. "If you live in these areas, leave immediately for higher ground," the National Weather Service warned Thursday. PHOTOS: Isaac lashes Gulf Coast Gordon Burgess, president of Tangipahoa Parish in Louisiana, called for the mandatory evacuation -- believed to be about 40,000 to 60,000 residents -- along the Tangipahoa River.