Links of interest, compiled here for your viewing pleasure:
Fly Fishing / Conservation
PFBC Biologist Reports
USGS Water Data for PA
Canaan Valley Institute - tons of interesting restoration info
USGS Board on Geographic Names - name your own stream!
Coldwater Heritage Partnership
PA Trout Unlimited
Back the Brookie
Other Similar Sites
Trout Predator Online - these guys really know how to catch fish
Mark's Flyfishin' Page - awesome pics and yearly fishing stats