There are studies about Stripers impact on Shad, Crappie and some other species in Alabama waters and according to state biologists they have little to no negative effect. I know that much of the effort was concentrated around Weiss Lake though. I do know that Stripers have been making spawning runs up into small creeks since well before lakes were impounded. In the summer when water temperatures soar they also seek out cool water refuges like spring fed creeks and deep holes in clear lakes. Now I guess something could have changed but that seems like normal behavior to me.