You're right on with your statements about the Clinch. "A mere shadow of itself". That's the 100% truth right there. I think its a combination of the regs, the capacity study, D. Geminata, and the flooding. Mother nature has a way of repairing herself so lets hope the Clinch returns to it's former glory.
May is a little early for the sulfurs up on the SoHo but you'll probably get to fish a small hatch of them. The thickest hatch occurs the last few weeks of June thru the first two weeks of July. Give or take a week or so. If TVA is generating during this time (with normal rainfall they probably will be) do yourself a favor and find a boat ride. You'll thank me later.