Fly Fishing Trout Fly
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Fly Fishing Nymph

California: Upper Sacramento River Hatch Chart

FlySizeJanFebMarAprMayJunJulAugSepOctNovDec
Caddis (various)14 - 18         
Golden Stonefly6 - 10            
Salmon Fly4 - 6             
Ants14 - 16            
Beetles12 - 14            
Blue Winged Olive18 - 22        
Midges (various)18 - 22       
Little Yellow Stonefly14 - 16          
Grasshoppers10 - 12          
October Caddis8 - 10            
Click Fly Name to see patterns that imitate it.