More than 30 inches (75cm) of rain has fallen across North and SC since Friday, with tens of thousands of people evacuated from their homes. Earlier, the death toll stood at eight.
Hurricane Florence caused a record amount of rainfall in North Carolina and has created the highest rainfall total for any tropical system to ever strike the East Coast of the United States, according to CNN.
The slow-moving storm, a hurricane when it hit the North Carolina coast, has dumped up to 36 inches (91 cm) of rain on the state since Thursday, displacing thousands.
Rescue crews used boats to carry more than 360 people from rising water in the river town of New Bern, North Carolina, while many of their neighbors awaited help.
- A woman in SC who struck a downed tree while she was driving.
In addition to the physical damage being done by Florence - it has already left tens of thousands of homes damaged - experts warn of psychological disruption for residents along its path. Sarah Thompson, who is helping lead Save the Children's response to Florence, told NPR children are among the most vulnerable to emotional trauma from a major storm.
County commission chairman Woody White said officials were planning for food and water to be flown into the coastal city. "As you can expect this is a significant setback at the hands of mother nature but we will prevail".
Fresh evacuations were ordered further inland as rivers crested and spilled out of their banks.
At least 11 people were killed in North Carolina and six others in SC, including a 3-month baby killed by a falling tree.
"The worst is yet to come", said Fayetteville Mayor Mitch Colvin "Get to higher ground now".
Residents of the Carolinas were starting to confront the storm's after-effects, including power outages, impassable roads, and sewage spilling into flooded areas, while the hurricane's remnants headed north.
"We're going to try to spread out supplies as best we can in the areas that need it the worst, understanding that our citizens in Woodrow, off of Oaks Road, are in desperate need".
In Leland, a low-lying city north of Wilmington, homes and local businesses were engulfed by water yesterday. Conway city officials also expressed concerns with the county and state's flood-mitigation plan on the U.S. Highway 501 bridge.
About 17,000 customers were without service in SC, mostly in northeastern SC near the North Carolina state line. We are surrounded by pine trees, and the Carolina pines just danced around and didn't really fall.
On Sunday, Wilmington Police said it had received more than 800 emergency calls in a 30-hour period.
"There is a lot of farm land underwater, all over the southeastern part of the state", Cooper said.
"We lost all of our cars last night", Heath told her viewers, "because the water was above the headlights, even on our SUVs".
The National Weather Service issued a flash flood warning for the area until at least Monday morning and said up to 8 inches (20 cm) more rain could fall in some areas, creating an elevated risk for landslides in Western North Carolina.
Although the weather might have cleared up a little bit, rivers are still on the rise throughout the state with peak water levels in some places not happening until Tuesday.
Deadly Hurricane Florence has weakened but authorities warn the danger is far from over, with swollen waterways threatening catastrophic flooding.