I understand it has not rained much recently, and that is definitely something to ask about regarding Blue Hole at Roaring River. I've not been myself as I have always been told the water is too low to swim (usually Feb-March).

On the other hand, YS is usually nicer when the water is low, as it is cleaner (recent rain makes the water run too fast and it can be sort of muddy). So I'd not plan this until you get there if possible.