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Pennsylvania Hatch Chart

Published by Dave Kile [dkile] on 03/07/2010 (105144 reads)
Pennsylvania Hatch Chart

This is a brief list of the many thousands of hatches that are found across Pennsylvania.  All dates and time are approximations.  Sun, clouds, rain, and temperatures can have a wide range of effects on the timing of all hatches.  The first occurrence of most hatches generally start in the southern part of the state and then work there way north.

Hatch Common Name Hook Size Start Date Start time Latin Name
Little Blue Winged Olive 16-20 15-Mar 10:00 AM - 4:00 PM Ephemerella & Baetis
Blue Quill 16-18 17-Apr 11:30 AM - 3:00 PM Paraleptophlebia adoptiva
Quill Gordon 12-14 17-Apr 1:30 PM - 6:30 PM Epeorus pleuralis
Hendrickson Female 12 19-Apr 2:00 PM - 6:30 PM Ephemerella subvaria
Red Quill Male 14 19-Apr 2:00 PM - 6:30 PM Ephemerella subvaria
Sulphurs 14-16 10-May 7:00 PM Ephemerella rotunda, dorthea, & others
March Brown 10-12 12-May All Day Stenonema vicarium
Gray Fox 10-12 12-May 10:00AM - Noon Stenonema fuscum
Light Cahill 14 18-May 8:00 PM Stenacron
Blue Winged Olive 14-18 20-May 10:00 AM - 3:00 PM Baetidae
Green Drake 8-10 24-May 8:00 PM Ephemera guttulata
Brown Drake 10-14 26-May 8:00 PM Ephemera simulans
Slate Drake 12-14 26-May 5:00 PM Isonychia bicolor & sadleri
Trico 20-24 15-Jul 7:00 AM -Noon Tricorythodes stygiatus
White Fly 10-14 Early August 7:30 PM Ephoron lekon
Slate Drake 12-14 August-October Noon - 4:00 PM Isonychia

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