Copyright 2013 James Marsh
Hatches and Flies for the Penobscot River Maine
Most of the mayfly hatches occur from May into the first half of June. The middle of June
starts some huge and prolific caddisfly hatches.

Little Black Stoneflies are the first hatches to occur on the Penobscot River. The problem is
that they are usually all gone by the opening of the season.

There are several species of Little Blue-winged Olives that hatch during the year. They
start in April and usually a peak around the middle of May. These last through most of June
and then slack off until about the middle of August. They fall hatches last through
September. There's a Great Olive Winged Dun locally called the Hexagenia hatch that
starts about the middle of June and can last through most of July.

Quill Gordons start hatching about the same time the season opens in April and last until
the middle of May. Hendrickson mayflies hatch about the same time or from about the first
of May through the first week of June. March Browns start about the first week of June and
last until near the first of July. Light Cahills start about the first of June and last on into the
middle of July. All of the above are clinger mayflies that will be found in the moderate to fast

Little Yellow Stoneflies hatch from about the first of June into the first of July. These
stoneflies are called Yellow Sallies by some anglers.

There are several species of Spotted Sedges and Cinnamon Sedges. These caddisflies
hatch from about the middle of April all the way through September. There are also lots of
Green Sedges that hatch during June and July. Imitations of their larvae, often called
Green Rock Worms, are very effective.

Ants, beetles and grass hoppers are all important terrestrial insects. These normally
become important around the middle of July. They can be found along the streams until as
late as the end of September. Dragonfly nymphs can also be effective in some areas.

You definitely need streamers to match the smelt if you fish early in the season. Also
streamers that imitate sculpin work great. Our Perfect Fly Yellow Marabou Sculpin and
White Marabou Sculpin work great in this stream according to our customers.

We always recommend our "Perfect Flies" not only because we sell them but also because
we know they are the best trout flies you can purchase. If you haven't tried our "Perfect
Flies" yet, be certain to do so. You will be glad you did. We have specific imitations of all
the insects that hatch on the Penobscot River.
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Penobscot River Maine
Photo Courtesy of Dennis McCarthy
Options For Selecting Flies:
1. Email us with the dates you will be
fishing this stream and we will send
you a list of our fly suggestions. Please
allow up to 24 hours for a response.

2. Call us 800-594-4726 and we will
help you decide which flies you need.

3. Call or email us with a budget for
flies and we will select them and get
them to you in time for your trip.

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over $50 are shipped Priority Mail.