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Fly Fishing Nymph

Pennsylvania: Oil Creek Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Blue Quill16 - 18            
Hendrickson12 - 14             
Quill Gordon12 - 14             
Red Quill12 - 14             
Tan Caddis16         
Brown Caddis14 - 16            
March Brown10 - 12            
Gray Fox12 - 14             
Light Cahill14 - 16             
Sulphur16 - 18             
Terrestrials (various)10 - 18          
Click Fly Name to see patterns that imitate it.