A steady armada of utility service trucks drive through Waveland, Miss., to assist residents left without power from Hurricane Isaac, Thursday, Aug. 30, 2012. Signs of life returned to the Mississippi Gulf Coast on Thursday as curfews were lifted and some businesses and roads reopened, but many residents still couldn't make it home because of flooding in low lying areas and along rivers. (AP Photo/Rogelio V. Solis)
Gallery: More photos from Hurricane Isaac
Aug. 30, 2012 @ 11:37 AM
Hurricane Isaac poured unrelenting rain Thursday, flooding areas north and south of New Orleans even as the city's fortified defenses held and forcing officials to launch speedy evacuation and rescue efforts in the face of fast-rising waters.