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Fly Fishing Nymph

Michigan: Indian River Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Streamers (various)6 - 12 
Blue Winged Olive18 - 20          
Little Black Caddis16 - 18         
Hendrickson12 - 14              
Caddis (various)16 - 18        
March Brown12 - 14            
Gray Drake12 - 14            
Sulphur16 - 18            
Brown Drake10 - 12            
Terrestrials (various)6 - 12          
Hexagenia4 - 8            
Trico22 - 28          
White Fly12 - 14            
Click Fly Name to see patterns that imitate it.