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

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.

An East Tennessee police department said one of its K-9 officers was found dead after going missing following historic flooding. The Erwin Police Department said K-9 Scotty went missing from the Bumpass Cove area,

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

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.

Area law enforcement and emergency management agencies are warning drivers to avoid high waters and use caution. Flood warnings are in effect for several counties in East Tennessee. 6 News’ crews and viewers have captured photos of flooding, heavy rain and trees down throughout the region.

Organized by the East Tennessee Foundation, the Neighbor to Neighbor Disaster Relief Fund "provides timely disaster grants to nonprofit organizations in our 25-county region in East Tennessee."

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