Nolichucky River

Park and Play spot.

For more info check Chris Bells Boatingbeta.com.

from boatertalk:

It's actually on the outskirts of Greeneville on Hwy
70. Anything over 1500 cfs is acceptable, 3000 rocks!
Take a rope! Bill J

also from boatertalk:

The spot is on river left, you can see the dam from the wave. most times I have gotten there from the left bank because on the river right side there is a long ferry to get there. I have not ben there for a couple of years but I will get the road numbers for you and it is not a secret any longer, maybe eight years ago it was but now if the Noli is running over 2.5 or 3 cfs it is a fun place.

From Regional Streamkeeper Chris Bell:

There's already some information there about levels, but the upper limit is too high. The wave starts to wash out about 3,800 cfs. To get the level, figure that the level at the wave is about 12 hours behind the level on the Embreeville gauge. In other words, if the level on the gauge is 3,000 cfs at 9pm, you'll have about 3,000 cfs at the Secret Spot the next morning at 9am.