Irene killed 43 people from Florida to New England as it marched up the Eastern Seaboard over the weekend, dumping torrential rain. Some of the worst flooding struck Vermont, New Jersey and upstate New York.
Roughly 1 million customers remain without electricity from North Carolina to Maine, the U.S. Department of Energy said.
Vermont transportation officials made emergency repairs on roads to all but one of about a dozen previously isolated towns, officials said.
Vermont National Guard helicopters flew in water, food, diapers, baby formula, blankets and cots to other towns where residents can't safely get in or out.
About 12,000 local customers remained without power Wednesday after the catastrophic flooding. Grocery stores and residents gave away food when their freezers no longer had electricity.
CNN’s Amber Lyon reports from southern Vermont, where homes and businesses have been devastated by Hurricane Irene.