Fly Fishing Trout Fly
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Fly Fishing Nymph

Pennsylvania: Slate Run Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Little Black Stonefly16 - 18             
Blue Quill16 - 18            
Quill Gordon14            
Hendrickson14             
Tan Caddis12 - 16            
Green Drake10            
March Brown12            
Blue Winged Olive16             
Gray Fox12             
Light Cahill14             
Sulphur16             
Slate Drake12 - 14            
Ants16 - 20           
Beetles12 - 18           
Caterpillars12           
Trico24           
Click Fly Name to see patterns that imitate it.