The photo is BTDT posted shows the fish better, but here's one I have of a Shenango quillback. This fish was one of the few quillbacks that was actually caught.......mixed in with gazillions of foul hooked ones.
It's hard to say exactly how good the redhorse fishing is there since I very, very, very rarely target them, but yeah it does seem to have a pretty darn good population of them. At least in certain spots. Some days when I'm wading the shallows for carp I see many more suckers than carp, and other days it's about even.....or there's more carp. I wouldn't say there's a spring run or anything(maybe in a few of its small tribs?) but numbers are pretty consistent during the warmer months in areas.
I will say that the redhorses there are a heck of a lot pickier than the carp. Not as picky as quillbacks though haha.