Welcome to Pond Boss, Zachary H.

RAH brings up a good point. You have to assess your own situation, and consider what impacts your actions will have. For me, if I'm just doing things with species of fish that readily exist around the area, I wouldn't worry too much about it. BUT, that is not advising you to do so. Consult the PA Fish Commission rules for sure.

I don't know if fatheads reproduce in flowing streams or not.

I also agree with MSC that if the water levels reach year round flow with depth, fish will appear.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."