If TVA holds it’s same schedule, there should be plenty of time to fish the sulphur hatch on low water. The last two days, TVA has statred running at 2 p.m. on the South Holston River. They are projecting the same for next three days. So you should have good hatches on low water and then the sulphurs should continue on high water.
The nymph, beetle and streamer bite has been good also.
As always , check the TVA web site or phone n umber in the evening before and the moring you are coming to verify schedule.
Rod