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Hatch Chart
The material for this chart was prepared by Don Puterbaugh of Salida, Colorado. Don is an accomplished Flyfishing Guide, Author and most importantly a good friend. Thanks Don!

For those of you wishing to learn more about fly tying we recommend The Basic Manual of Fly-Tying by Paul N. Fling and Donald L. Puterbaugh available at fly shops and bookstores everywhere.

Month
Hatching Insects
Conditions
Recommended Flies
Nymphs
Size
Dry Flies
Size
Jan
--
Poor
-- -- -- --
Feb

Midges

Fair
Beadhead Brassies
Beadhead Pheasant Tails
Beadhead Blackmagic
18-20
18-20
20-22
Midges
Elk Hair Caddis
22
18-22
Mar
Midges

Fair to Good

Beadhead Brassies
Beadhead Pheasant Tails
Beadhead Blackmagic
Beadhead Blue Wing Nymph
16-18
16-18
20-22
18
Midge, Elk Hair
Blue Wing Olive
Blue Wing Olive Emergers
22
18
18
Apr
Midges
Blue Wing Olives
Mayflies
Good to Very Good
Beadhead Pheasant Tails
Beadhead Brassies Blue Wing Olive Emergers
16-18
18

18
Midge, Elk Hair Blue Wing Olive
Blue Wing Olive Emergers
Caddis
11 16-18
16-18
16-18
May
Blue Wing Olives Mayflies Caddis
Excellent to Poor*
Beadhead Pheasant Tails
Blue Wing Olive Nymphs
Caddis Pupa Beadhead
Beadhead Prince Nymph
16
16
16
16
Caddis Adults
Caddis Emergers
Blue Wing Olives
14-16
14-16
16-18
Jun
--

Poor to Fair*

Stonefly Nymphs – Dark
Stonefly Nymphs – Golden
Caddis Emergers
Beadhead Prince Nymphs
8
8
14
14
Yellow Stonefly
Caddis Fly
Grasshoppers
12
14
8
Jul
Mayflies
Caddis
Pale Morning Duns
Grasshoppers
Adult Stonefly (yellow)
Good
Beadhead Pheasant Tails
Beadhead Prince Nymph
Dark Stonefly Nymph
Golden Stonefly Nymph
16-18
16
8
8
Yellow Adult Stonefly
Caddis Fly
Grasshopper
Pale Morning Duns
12
14-16
8
16-18
Aug
Mayflies
Caddis
Pale Morning Duns
Adult Stonefly (yellow)

Excellent

Beadhead Pheasant Tails
Beadhead Prince Nymphs
Golden Stone Fly Nymphs
16-18
16
8
Pale Morning Dun
Mayfly
Caddis
Grasshopper
16-18
14-16
14-16
8
Sept

Mayflies
Caddis
Pale Morning Duns Grasshoppers
Blue Wing Olives
Very Good
Beadhead Pheasant Tail
Beadhead Prince Nymph
16-18
16-18
Yellow Stone Fly
Blue Wing Olive
Pale Morning Dun
Caddis
Grasshopper
12
16-18
16-18
14-16
8
Oct
Mayflies
Pale Morning Duns
Some Grasshoppers
Good
Beadhead Pheasant Tail
Beadhead Prince Nymph
Egg Patterns
16-18
16-18
14
Blue Wing Olive
Yellow Stonefly
16-18
12
Nov
Mayflies
Blue Wing Olives
Fair
Beadhead Pheasant Tail
Egg Patterns
16-18
14
Blue Wing Olive

16-18

Dec
--
Poor
-- -- -- --
* Poor conditions are due to run off and can vary from day – to – day. When waters clear fishing is fair during this period.

 

 

 

 

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