As the death toll from Florence mounted and hundreds of people were pulled from flooded homes, North Carolina is bracing for what could be the next stage of a still-unfolding disaster: widespread, catastrophic river flooding.After blowing ashore as a hurricane with 90 mph (145 kph) winds, Florence virtually parked itself much of the weekend atop the Carolinas as it pulled warm water from the ocean and hurled it onshore. Storm surges, flash floods and winds scattered destruction widely, and the Marines, the Coast Guard, civilian crews and volunteers used helicopters, boats and heavy-duty vehicles to conduct rescues Saturday. Evacuations ordered far inlandRivers are swelling toward record levels, forecasters now warn, and thousands of people have been ordered to evacuate for fear that the next few days could bring the most destructive round of flooding in North Carolina history.Stream gauges across the region showed water levels rising steadily, with forecasts calling for rivers to crest Sunday and Monday at or near record levels: The Little River, the Cape Fear, the Lumber, the Neuse, the Waccamaw and the Pee Dee were all projected to overflow their banks, possibly flooding nearby communities.Authorities ordered the immediate evacuation of up to 7,500 people living within a mile (1.6 kilometers) of a stretch of the Cape Fear River and the Little River, about 100 miles (160 kilometers) from the North Carolina coast. The evacuation zone included part of the city of Fayetteville, population 200,000.John Rose owns a furniture business with stores less than a mile (1.6 kilometers) from the river. Rain-soaked furniture workers helped him quickly empty more than 1,000 mattresses from a warehouse in a low-lying strip mall.“It’s the first time we’ve ever had to move anything like this,” Rose said. “If the river rises to the level they say it’s going to, then this warehouse is going to be under water.” On U.S. Route 401 nearby, rain rose in ditches and around unharvested tobacco crops along the road. Ponds had begun to overflow, and creeks passing under the highway churned with muddy, brown water. Further along the Cape Fear River, grass and trees lining the banks were partly submerged, still well below a highway bridge crossing it.“It’s hard to believe it’s going to get that high,” said Elizabeth Machado, who came to the bridge to check on the river.Fayetteville’s city officials, meanwhile, got help from the Nebraska Task Force One search and rescue team to evacuate some 140 residents of an assisted living facility in Fayetteville to a safer location at a church.Two feet of rain, more on the wayAlready, more than 2 feet (60 centimeters) of rain has fallen in places, and forecasters saying there could be an additional 1 feet (45 centimeters) before Sunday is out.As of 11 p.m. Saturday, Florence was centered about 40 miles (65 kilometers) east-southeast of Columbia, South Carolina, crawling west at 3 mph (6 kph), not even as fast as a person walking. Its winds were down to 40 mph (75 kph).In Goldsboro, North Carolina, home of Seymour Johnson Air Force Base, roads that frequently flood were closed Saturday by rushing water. Dozens of electric repair trucks massed to respond to damage expected in central North Carolina headed to the coast. Hundreds of thousands of outages have been reported.Coal ash landfill collapsesOn Saturday evening, Duke Energy said heavy rains caused a slope to collapse at a coal ash landfill at a closed power station outside Wilmington, North Carolina. Duke spokeswoman Paige Sheehan said about 2,000 cubic yards (1,530 cubic meters) of ash were displaced at the Sutton Plant and that contaminated storm water likely flowed into the plant’s cooling pond.Sutton was mothballed in 2013 and the company has been excavating ash to remove to safer lined landfills. The ash left behind when coal is burned contains toxic heavy metals, including lead and arsenic. Water rescuesIn New Bern , along the coast, homes were surrounded by water, and rescuers used inflatable boats to reach people Saturday.Kevin Knox and his family were rescued by boat from their flooded brick home with the help of Army Sgt. Johan Mackie, whose team used a phone app to locate people in distress.New Bern spokeswoman Colleen Roberts said 455 people were safely rescued in the town of 30,000 residents. She called damage to thousands of buildings “heart-wrenching.”Across the Trent River from New Bern, Coast Guard helicopters took off to rescue stranded people from rooftops and swamped cars.The Marines rescued about 20 civilians from floodwaters near Camp Lejeune, using Humvees and amphibious assault vehicles, the base reported.