Each 75 miles of distance west changes hatch timing by making it 1 week later.
Common Name
(Latin Name) |
Size |
Dry Fly
(Click for recipe) |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sept |
Oct |
Midge
(Chironomidae) |
16-26 |
Griffith's Gnat |
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Quill Gordon
(E. pleuralis) |
12-14 |
Quill Gordon |
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Blue Wing Olive
(B. vagans) |
18-20 |
Blue Wing Olive |
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Little Mahogany
(P. adoptiva) |
16-20 |
Pheasant Tail |
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Little Black Caddis
(C. aterrima) |
16-18 |
Elk Hair Caddis |
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Hendrickson
(E. subvaria) |
14-16 |
Hendrickson or Pheasant Tail |
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March Brown
(S. vicarium) |
10-12 |
March Brown or Pheas. Tail |
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Large Sulphur
(E. invaria) |
14-16 |
Extended Body Comparadun |
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Little Sulphur
(E. dorothea) |
16-20 |
Sulphur |
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Light Cahill
(S. candense) |
14-16 |
Light Cahill |
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Grey Fox
(S. fuscum) |
12-14 |
Grey Fox |
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Early Season Brown Stonefly
(S. fasciata) |
14-16 |
Early Brown Stonefly |
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| Elk Hair Caddis |
14-18 |
Elk Hair Caddis |
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Hexagenia
(H. limbata) |
6-8 |
Hazel Bomber |
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Slate Wing Olive
(E. lata/attenuata) |
16-18 |
Blue Wing Olive |
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Trico
(T. stygiatus) |
22-24 |
Trico |
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Tiny Blue Winged Olive
(P. anoka) |
22-24 |
Blue Wing Olive |
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