Tennessee dam that sparked fears of failure during Helene gets inspection results
Engineers with the Tennessee Valley Authority said Thursday they've completed thorough inspections along the Nolichucky Dam using an underwater camera, laser measurements and drones.
Swollen river pours over Tennessee's Nolichucky River Dam.
The swollen Nolichucky River sweeps over a dam in eastern Tennessee after 1-2 feet of rain fell in the nearby mountains. (Video courtesy: Tennessee Valley Authority)
GREENEVILLE, Tenn. — A Tennessee dam that took the brunt of Hurricane Helene’s historic flooding and was feared to be at the brink of failure has been given a relatively clean bill of health.
Engineers with the Tennessee Valley Authority said Thursday that thorough inspections along the Nolichucky Dam using an underwater camera, laser measurements and drones have found that the dam structure has avoided any major damage.
During the height of the storm, emergency managers scrambled to get people downriver to safety after water levels rose well over the dam, sparking fears of an "imminent breach." The TVA estimated water levels reached 8 feet over the record elevation.
Nolichucky Dam seen during Helene's record flooding, and about three weeks later in calmer conditions.
(Tennessee Valley Authority / FOX Weather)
While the dam held, the river caused significant damage to its right abutment, the TVA said, requiring continued repairs.
The Nolichucky River still caused widespread devastation. Floodwaters buried the town of Erwin, leaving several dead at Impacts Plastics when the waters rushed through the factory.
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Image 1 of 4Repairs on Tennessee's Nolichucky Dam (Tennessee Valley Authority)
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Image 4 of 4Repairs on Tennessee's Nolichucky Dam (Tennessee Valley Authority)
Dozens had to be rescued via helicopter from the rooftop of Unicoi County Hospital when floodwaters rose so fast and burst into the hospital that it was too late to evacuate on the ground.
‘DANGEROUS RESCUE OPERATION’ SAVES DOZENS TRAPPED ON ROOF OF FLOODED TENNESSEE HOSPITAL
In all, at least 17 people have died in Tennessee from Hurricane Helene, which dropped 15-30 inches of rain in western North Carolina and the eastern Tennessee mountains.
Tennessee dam near 'imminent' failure after heavy rain from Helene
Waves of raging river water were seen crashing over the Nolichucky Dam in Tennessee as authorities feared its imminent breach on Friday. The Tennessee Valley Authority said the breach could cause potentially life-threatening flooding downstream.
The TVA said engineers will continue to evaluate the information from their inspection.
Editor’s Note: This story has been corrected to revise a prior error stating Erwin was located downstream of the Nolichucky Dam.