Pennsylvania Hatch Chart For Mayflies, Caddis and Stoneflies

 This is a “general” Pennsylvania Hatch Chart. Not all insects 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 Eastern and Central Pennsylvania.




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All Flies on this page were tied with the UP DN TROUT Wing Material (and some CDC, Stonefly and Green Drake).