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Western Montana Hatch Chart

 

January

February March April May June July August September October November December

Caddis

 
Grannom  

Sizes 12-18, Brown to Light Green

 
Spotted Sedge  

Sizes 12-16, Brown to Tan

 
Brown Sedge  

Sizes 14-18, Brown

 
October Caddis  

Sizes 6 & 8, Burnt Orange

 

January

February March April May June July August September October November December

Mayfly

 
Baetis  

Sizes 14-22, Blue Winged Olives

 
March Brown  

Sizes 12-14, Brown

 
Ameletus

Sizes 14-16, Red/Gray to Gray

 
Pale Morning Dun  

Dull Yellow

 
Red Quill  

Sizes 10 -12, Rust to Red

 
Green Drake  

Sizes 8-12, Green

 
Gray Drake  

Sizes 10 -14, Gray

 
Mahogany Dun  

Sizes 12-16, Burgundy

 
Trico   Size 18, very tiny  
January February March April May June July August September October November December

Stonefly

 
Capnia

Sizes 16 & 18, Black

 
Nemoura  

Sizes 12 & 14, Brown

 
Skwala  

Sizes 10 & 12, Greens to Browns

 
Large Golden Stone  

Sizes 6 & 8

 
Small Yellows  

Sizes 14-18

 
Salmon Fly  

Sizes 4 & 6

 
January February March April May June July August September October November November

Midges

Small Black Midge

Just about the entire year

Small Green Midge

Just about the entire year

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John Perry's Montana Fly Fishing
68 Rock Creek Road - Clinton, MT 59825
Phone: (406) 825-2997  Toll Free: (800) 580-9703
Email: John Perry Outdoors

Home  |  John Perry Fly Fishing Outfitters  |  Clark Fork River Lodge  |  Fly Tying Materials  |  Flies  |  Site Map