This is a “general” Pennsylvania Hatch Chart. Not all bugs occur on all streams, and timing can vary by stream and by year. This chart is a good starting point to prepare for hatches across Pennsylvania.
Water Flows, Gage Heights and Temperatures Available for Rivers and Streams.
Stream Name, Fishable Levels
Perkiomen Creek 20 cfs to 100 cfs Comes up fast
*Tulpehocken Creek 75 cfs to 200 cfs
Manatawny Creek 70 cfs to 250 cfs Comes up fast, and drops fast
*Pohopoco Creek 50 cfs to 180 cfs
Little Lehigh 50 cfs to 200 cfs
*Lehigh River 300 cfs to 1,000 cfs
Penns Creek 100 cfs to 300 cfs Comes up fast
Spring Creek 100 cfs to 250 cfs A stable creek
Pine Creek 200 cfs to 800 cfs Can rise quickly
Kettle Creek 70 cfs to 300 cfs
Little Juniata 100 cfs to 350 cfs
Susquehanna River Smallmouth 5,000 cfs to 20,000 cfs