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Fly Fishing Nymph

Connecticut: Housatonic River Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Blue Winged Olive20 - 28      
Blue Quill16 - 18             
Hendrickson12 - 14             
Red Quill12 - 14             
Green Caddis14 - 18             
March Brown10             
Tan Caddis16 - 20             
Gray Fox12 - 14             
Brown Drake8             
Green Drake8 - 10 (2X             
Sulphur16 - 18            
Alder Fly12           
Black Caddis18 - 20           
Light Cahill12 - 14          
Terrestrials (various)14 - 24         
Trico24           
Slate Drake12           
White Fly12 - 14             
Click Fly Name to see patterns that imitate it.