Officials in Florence County, South Carolina, are ordering almost 2,000 more people to leave their homes and get out of the way of the rising Lynches River.
As rivers swollen to record levels started to recede Thursday in North Carolina, officials tried to head off potential environmental disasters and prepared for more record flooding downstream in SC.
Officers say it appears the water knocked the man's vehicle off the roadway.
Flood waters and downed trees nearly entirely cut off Wilmington from the rest of the state, after Florence dropped more than 2 feet (60 centimeters) of rain over the coastal city. Some areas are expected to be at risk from even higher water levels through the end of the weekend. The storm also closed 1,200 North Carolina roads, including 357 primary roads.
Thousands of homes and roadways in the region remain underwater less than a week after the storm made landfall. One person was killed during a tornado in Virginia, which was part of the Florence storm system.
To the president's right is North Carolina's Democratic Gov. Roy Cooper; to his left, Homeland Security Secretary Kristjen Nielsen.
In Lenoir County, North Carolina, where the rising Neuse River has flooded some roads, emergency medical workers have been running a "mobile disaster hospital" to provide urgent care to those residents who were cut off from the nearest hospital.
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The detainees were women being transported from Waccamaw Mental Health and Loris Hospital to a behavioural health hospital in Darlington, South Carolina, according to the Associated Press. "We are just very sorry that this event has taken place".
The Little Pee Dee River and the Lumber River have started to drop near Nichols, where the whole town of 360 was under water for the second time in two years.
"Now it looks nice, but it's really the calm before the storm", he said.
Cooper said Florence was an "epic" storm and noted that farmers suffered significant losses and scores of people lost their homes.
The National Weather Service estimated that North Carolina got 8.04 trillion gallons of rain during Hurricane Florence, which weakened and lingered over the Carolinas for days. While Florence was downgraded to a Category 1 storm by the time it struck the area on September 15, it still managed to dump a record 23 inches of rain in SC and 35 inches in North Carolina, over the course of just four days.
Forecasters grew increasingly anxious about New Bern being flooded by storm surge on the Neuse River the closer Florence got to the coast, and their fears proved to be well-founded: a 10-foot (3-meter) surge was reported in the city, along with more than 16 inches (40 centimeters) of rainfall. Over 60,000 customers were without power in North Carolina early on Friday.
Mayor Lawson Battle said that as far as he knew, everyone in the town of about 360 people evacuated as the water first started to invade town Monday.