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Pennsylvania Fly Hatch Chart

This Pennsylvania Fly Fishing Hatch Chart is a collection of dry fly hatches for many Pennsylvania Streams.

A newly hatched caddis fly

Dates of the hatches are approximations and can change from year to year.

The best way of knowing what is hatching on the streams is to check the Fishing Reports often. Good Luck!

Blue Winged Olive

Mid March to beginning of April and again in early Summer and Fall

a newly hatched blue winged olive

18-20

Mid Morning to Late Afternoon

Early Dark Stone Fly

Mid March to beginning of April and again in early Summer and Fall

an early dark stone fly hatchling

Size: 18-20

Mid Morning to Late Afternoon

Grannom Caddis

Fishing Creek, Penn’s Creek, Little Juniata, First Fork Sinnemahoning- Mid April – End of April

a grannom caddis fly in pennsylvania

Size: 12-14

Mid Morning to Late Afternoon

Blue Quill

All Streams Except Spring Creek – Early April to Late April

a blue quill fly hatchling in pennsylvania

Size: 16-18

Mid Afternoon to Evening

Quill Gordon

First Fork, Pine Creek, Slate and Cedar Run, Fishing Creek – Early April to Late April

quill gordon flies hatching

14

Mid Afternoon to Evening

Caddis – Olive, Tan, Black

Mid April through September – Activity can vary greatly from stream to stream. You should have a variety of Caddis (color and size) with you from Spring through Fall

black caddis hatch

14-16

Late Morning to Evening

Hendrickson

All Streams Except Spring Creek – Early April to Early May

a hendrickson mayfly hatch

12-14

Early Afternoon to Early Evening

Red Quill

All Streams Except Spring Creek – Early April to Early May

a red quill fly hatch

14-16

Early Afternoon to Early Evening

March Brown / Grey Fox

All Stream Except Spring Creek – Mid May – Late May

a march brown/ grey fox hatch

10-12

Afternoon to Evening

Sulphur

All Streams – Early May – Mid June – Small Variety first and Large next

a sulphur fly hatch

14-16

Evening

Cahill

Mid May – Mid June – All streams

a cahill fly hatch

12-16

Evening

Terrestrials – Ants, Beetles, Grass Hoppers

All Streams – Late May to Mid September – Fish ants and beetles in high foliage areas and Hoppers in meadow areas

a grasshopper hatch

N/A

All Day

Green Drake / Coffin Fly

All Streams Except Spring Creek and Little J – Late May to Mid June

a green drake fly hatch

8-10

Evening

Brown Drake

Kettle Creek, First Fork Sinnemahoning, Pine Creek, Slate Run and Cedar Run – Late May to Early June

a brown drake mayfly

10-12

Evening

Slate Drake

Penn’s Creek, Little J and Fishing Creek – Mid May through September waning in the middle of Summer

a slate drake hatch

12-14

All Day – Early on cooler days and Later on Warmer days

Trico

Spring Creek, Little Juniata, Penn’s Creek, First Fork Sinnemahoning, Cross Fork (Kettle Creek), Slate Run, Cedar Run and Pine Creek – Mid July to Mid August

a trico fly hatch

22-28

Early Morning to Late Morning

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