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Fly Fishing Nymph

Michigan: Betsie River Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Little Black Stonefly14 - 16            
Blue Winged Olive18 - 20             
Caddis (various)14 - 18         
Hendrickson12 - 14             
Red Quill12 - 14             
Brown Drake8 - 10             
Gray Drake12 - 14             
Sulphur16 - 18            
Stoneflies (various)6 - 12            
Blue Winged Olive14 - 22         
Isonychia10- 12           
Light Cahill14            
Yellow Sallie12 - 16             
Hexagenia4 - 8             
Terrestrials (various)6 - 18            
Click Fly Name to see patterns that imitate it.