Dear Ggrove,
I've only even fished it, and only briefly much further upstream in the Bald Eagle State Forest well above Route 45 and Woodward. It used to be stocked around Route 45, I know that from my cousin who had a HS buddy whose family had a camp on it. They always enjoyed opening day, and the first few weekends, but that was 30 years!
I understand that as it gets closer to Penns it gets to be private and posted. I imagine if your friend has friends down there it would be worth exploring as it is a significant tributary to Penns Creek.
If you don't fish it there are plenty of other places close by to explore. It's a beautiful area of the State.
Regards.
Tim Murphy 🙂