The Tennessee Valley Authority is ready for the rainfall as it continues in East Tennessee.
TVA is already spilling at nine of its dams including Fort Loudoun, Chickamauga and Watts Bar.
It's also storing some water in its tributary dams to lower the risk of flooding downstream.
River Forecast Center Manager James Everett said the center starts planning days ahead of any rainfall.
"It's a 'round the clock job in terms of that chess game of trying to stay one or two moves ahead of when the rainfall does move in," Everett said.
He also says people should also be cautious around the dams with this surge of rain.
TVA is making reductions in flows at its dams to reduce flooding downstream.
"We expect those lake levels to begin to rise several feet as we store that water to provide flood protection," Everett said.
2018 is now the wettest year on record for the 41,000 square-mile Tennessee River Valley, according to TVA. The forecast center used 129 years of weather data to make that distinction.