Copyright 2013 James Marsh
Hatches and Trout Flies for Tulpehocken Creek Pennsylvania
As mentioned in the introduction, the Tulpehocken is fertile water because its source of
water, the upper Tulpehocken, is a limestone spring creek. The lake changes the chemistry
some but it still provides a good habitat for aquatic insects, especially caddisflies.
Several species of Blue-winged Olives hatch from March until November. The hatches
dwindle down in the summer months with only some hatches of small BWOs hatches. The
larger baetis and other larger olives hatch mostly in March and April and again in October.
There are also some Little Black and Little Brown Stoneflies that hatch early in the year in
March and April. Both are actually "Little Brown" Stonefly family members.
Sulphurs hatch in late April through June and into July sometimes. They are one of the better
mayfly hatches. Yellow Drakes hatch in the summer anywhere from June to August
depending on the releases and water temperature. Slate Drakes hatch off and on in late
summer around September and October but never in any large concentrations.
Tricos hatch from June until mid October. These hatches are fairly consistent and moderately
substantial. Some anglers consider this the best mayfly hatch.
The most plentiful aquatic insects, other than maybe midges which hatch in large numbers
year-round, are the caddisflies. There are several species including Green Sedges that
hatch in May and June; different species of Cinnamon Caddis and Spotted Sedges (both
net-spinners) that hatch from late April into July; Species of Little Sisters that hatch from June
to September; and Little Brown Caddis that hatch in July and August. There are several other
minor species of caddisflies that exist in this stream. Don't forget the craneflies.
Terrestrial insects become important from June to October. Imitations of grasshopper, ants
and beetles will catch their share of trout.
Streamers work great at certain times, depending on the releases and the water clarity.
Slightly off color water provide the best opportunity for them.
As always, we recommend our own "Perfect Flies". They not only are the most realistic
imitations, they are the most effective flies you can use. We have imitations of all the major
caddisflies in their larvae (if appropriate), pupae and adults stages of life. We hope you give
them a try.
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