As a matter of information a biologist who has done entomological identification in more detail than anyone for a span of about thirty plus years on the Clinch has never found any BWO in any stage on the Clinch in any of his sample points on the tailwater. This is evidence based on insects "keyed " under magnification of adult stage. That is the only way to correctly ID a species. mAny
Many people talk about BWO ( and some even publish hatch charts showing BWO )in Clinch tailwater but scientific evidence does not support the BWO presence in the tailwater below Norris dam Fwiw.