Authorities also reminded homeowners to clear snow from heating vents to prevent carbon monoxide from seeping back into houses.
In Maine, the Penobscot County Sheriff’s office said it recovered the body of a 75-year-old man who died after the pickup he was driving struck a tree and plunged into the Penobscot River during the storm. Investigators said Gerald Crommett apparently became disoriented while driving in the blinding snow.
Christopher Mahood, 23, of Germantown, N.Y., died after his tractor went off his driveway while he was plowing snow Friday night and rolled down a 15-foot embankment.
In eastern Long Island, hundreds of cars were stuck on roads, including the Long Island Expressway, a 27-mile stretch of which was closed Sunday for snow-removal work. Officials hoped to have most major highways cleared in time for the morning commute Monday.
In Massachusetts, eight teams were formed to assess damage from flooding along the state’s coastline, with the hardest hit-areas including historic Plymouth and portions of Cape Cod.
‘‘Considering the severity of the storm, the amount of snow and the wind, we've come through this pretty well,’’ Gov. Deval Patrick told CBS’s Face The Nation after meeting with local officials in Plymouth.
The U.S. Postal Service said that mail delivery that was suspended in the six New England states, as well as parts of New York and New Jersey, because of the snowstorm would resume Monday, where it is safe to do so.
Utility companies also reported steady progress in restoring power to customers.
In Massachusetts, some 180,000 customers remained without power on Sunday — down from 400,000 at the height of the blizzard, the vast majority in the southeastern part of the state. Rhode Island reported about 34,000 outages Sunday, down from 185,000. Connecticut still had about 4,700 without power, while in New York, about 500 remained without power.
Newport resident Christine Carreiro, who spent time at a shelter with her 2-year-old son, who suffers from asthma and needs treatment from an electrically powered nebulizer, said she was thankful for the effort by line workers.
‘‘Whoever was fixing the power lines left their families to help us,’’ she said. ‘‘I'm very grateful.
Salsberg reported from Wayland, Mass. Associated Press writers Stephen Singer in Manchester, Conn., and David Sharp in Portland, Maine, contributed to this report.