It's definitely worth spending a few hours there, at least during this time of year. Powerful binoculars and/or camera zoom are very helpful, if you go. Most of the action seems to be on the far side of the river.

To find it on GPS, look for Conowingo Dam Fisherman's Park.

I live close to the Maryland border, but I also haven't spent much time in the state. Mostly just diving through, on the way to DC or VA.