CLIMBING ONTO SOAPBOX NOW...
I'd eat fish from any of them. If I was eating fresh fish three days a week, for year after year... I MIGHT worry about it.
But to have an occasional meal of fresh fish is no big deal. I am firmly convinced that I ingest more potential health hazards form the tons of "processed" food, or even fresh fish, on the grocery store shelf than I will ever ingest from the Tennessee River.
As for the Health Advisories from the state, many of those are based on certain heavy metals and how many "parts per billion" the fish contain. For many years there was no health advisory on Nickajack Lake (beneath Chickamauga Dam)... and then suddenly, there was.
There was absolutely NO CHANGE in the level of heavy metals in the fish. The only thing that changed is that the government lowered the threshold it considered "safe." Again, the fish or alleged level of pollution did not change... only the government's "policy" changed.
Yet commercial fishermen continue to catch TONS of fish (primarily catfish) from all of these waters and ship them off for sale. They DO NOT have to report where thos fish were taken... nor is there any requirement that buyers be notified that said fish came from waters with health advisories.
In other words, the government is telling sport fishermen the fish might be unsafe... scaring away some anglers (as illustrated here) as well as many tourists. Yet the government does absolutely to see that other people across the country who buy our commercially-caught fish are notified about said warnings on the fish they buy and eat.
I suspect there is a good chance that some of the fresh fish you buy at the grocery store might have come from waters with similar concerns, but you never know it. Out of sight, out of mind.
In my opinion the government is either grossly overstating the warnings needlessly and haphazardly... or it is grossly negligent, complacent and liable for not protecting all consumers of fish commercially caught in Tennessee.
It has to be one or the other and it makes me mad as hell.
CLIMBING OFF OF SOAPBOX NOW....
Oh wait... one more thing. Here is a link to an intense scientific health assessment (1998) conducted on 550 people who eat "moderate to large amounts of fish from Watts Bar Lake." The study found absolutely no appreciable health impact on any of the participants:
http://www.atsdr.cdc.gov/sites/oakridge ... gation.pdf