You are in the wrong part of the state to find pickerel as they are not very common in the western part of the state. Pike are certainly a lot more common in the western part but I'm not sure about Washington County. The Allegheny River has good numbers of pike but I don't think it extends that far south really and the pike are mainly in the more northern sections of the river. So, basically, I can't be much help. Lol. That one reservoir in Somerset County was mentioned on my pike thread and that shouldn't be too far away from you though.