Check out these great resources from the PA DEP and Fish and Boat. The DEP map that seems most interesting is located at the end of the presentation ( you have to scroll through), and links DEP Marco studies to water bodies. It is very scientific, so don't expect to see "March Brown" or Blue Winged Olive. A little google searching will get you the common names. The Fish and Boat Map that is shown here lets you map trout streams and narrow them by your chosen criteria. There are other great maps (click on "more interactive maps" near the top). Do a little digging, and you might find a new place to fish!