I’ve seen a musky around the dam. I prefer fairmount for dams in the Schuylkill. I’ve caught huge hybrid stripers, stripers, flatheads, channel cats, walleye, carp, American shad, hickory shad, gizzard shad, largemouth, smallmouth, snakeheads just to name a few. In the summer you can go out and catch 15 stripers on any given tide. The shad fishing is pretty good. It’s not like Easton but you can catch fish. Every hybrid that I’ve caught has been over 25 inches long. It’s just a fishy spot. Depending on the species. I usually go low tide for shad. A lot of rocks become exposed and you can walk on them. They are slippery. High tide for everything else. The hybrids and striped bass like to hang right under the waterfall or at the mouth of the fish ladder. It’s a tough spot to fly fish but it can be done. Most the time I use live sunnies but have had successfully days on the fly.