TVA's system of dams along the Tennessee River and its tributaries has been tested by record flooding from Hurricane Helene, which drenched Western North Carolina and East Tennessee as a tropical storm , washing out interstate lanes and trapping residents as small streams in the Great Smoky Mountains suddenly became raging rivers.

"We do expect this number to change," spokesperson Myron Hughes of the Unicoi County Emergency Management Agency said Sunday.

Nuclear Fuel Services, which processes highly enriched uranium for the Navy in Unicoi County, said its plant posed no risk after flooding.

Hundreds of workers and thousands of volunteers working to search, rescue and clean up. But who is giving orders?

Hurricane Helene causes four deaths in East Tennessee, as communities work to address the resulting challenges.

Greeneville's water supply will run out Sept. 29, Laura White, Greeneville Water Commission superintendent told Knox News.

The remnants of Hurricane Helene thrashed East Tennessee on Friday, causing catastrophic flooding in several communities near the North Carolina border. The big picture: Towns were evacuated and whole homes were carried away by record-breaking floodwaters.

North Carolina officials are continuing to advise that drivers do not go out on the roads due to the floods and the structure damage the rising water may have caused, and some of the same advice is true in Tennessee as well.