A water main break flooded a busy shopping center in Philadelphia on Thursday. A Philadelphia Water Department official said the flood damaged businesses and forced about 100 people in the area to be evacuated, some of them by raft. Philadelphia Water Department spokesman John DiGiulio said a 48-inch pipe running through the parking lot of the Bakers Square complex in the northwest part of the city ruptured. It flooded the area with about 13 million gallons of water. DiGiulio said nearby railroad tracks used by the company CSX Corp appeared to have been damaged.