Fly Fishing Trout Fly
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Fly Fishing Nymph

Oregon: Hosmer Lake Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Boatman/Backswimmers10 - 12      
Streamers (various)6 - 10      
Caddis (various)10 - 16       
Callibaetis14 - 18       
Dragonflies6 - 8       
Leeches6 - 10       
Midges (various)12 - 16       
Scud12 - 16       
Damselfly10 - 12          
Click Fly Name to see patterns that imitate it.