HAMILTON COUNTY, TN (WRCB) -- If the mother of all Tennessee Valley floods had occurred last year, results at Watts Bar or Sequoyah nuclear plants could have been catastrophic, nuclear regulators and TVA officials say.

This year, the plants have a better chance against rising water. And in the next two years, Tennessee Valley Authority officials say, the seven reactors at all three nuclear plants built on the Tennessee River should be monster-flood proof.

Come Monday, they have to convince the Nuclear Regulatory Commission of that.

"We're trying to show as much as possible that we're dead serious about eliminating this issue and fixing the problem and restoring confidence that the NRC can count on us to do the right thing," said Preston Swafford, TVA's chief nuclear officer and executive vice president for the nuclear power group.

Read more from our news partner the Times Free Press.