.............................Fly Fishing Yellowstone National Park


I am calling this series Yellowstone Journals and Additional Information. It is a collection of a
rambling mixture of experiences on the streams with some notes, tips and additional
information thrown in. Some of this comes from my video tape logs (record of video shot)
and  notes made on my daily note books.

Fly Fishing the Upper Madison - Part 4

This continues the hatches that were covered yesterday in part 3. Another
mayfly that hatches in the Upper Madison is the Western Green Drake. We have
not found this one in large quantities on the Madison in the park, but we would
suggest you have flies available in the event you encounter a hatch. It starts
about the middle of June and last until the middle of July depending on the
particular section of the river. The hatch usually occurs mid-day, depending on
many factors and the spinner fall usually occurs near dark.

The next hatch we show is the Pink Ladies. These mayflies are the
species which are clinger nymphs. These are also called Slate Cream
Duns. Eastern anglers would find that they are close in looks and behavior to
the Quill Gordons. The female is called the Pink Lady. This hatch is best  
imitated with a wet fly because the duns hatch on the bottom or between the
bottom and the surface. They do not hatch on the surface. They will float down
the streams in the cold water for a few feet before departing the water and they
trout will take some from the surface very aggressively even in the colder water.
Most anglers prefer a dry fly imitation and the dry imitation of the dun will work
most of the time, just not as effectively as the wet fly. These mayflies usually
hatch in the late afternoon. These are our
"Perfect Fly" imitations. Notice the wet
fly emerger.

March Browns, or Rhithrogena species, hatch starting around mid-July and can
last until near the end of August depending on the location. You will find these in
the fast water sections of riffles and runs. These mayflies hatch during the day
from mid-morning until mid-afternoon but never in any large quantities. The
spinners fall usually takes place in the evenings.

At the same time, the Flavs or Small Western Green Drakes start hatching in
some locations. These clinger nymphs prefer the moderate water or smoother
sections of the Madison River in the park. The hatch usually occurs during the
late afternoon and is usually short unless the sky is overcast or cloudy. The
spinner fall also occurs in the late afternoons.

Tricos hatch in the slow water sections near the park boundary close to Hebgen
Lake. This hatch can last from mid-July to through September.

Callibaetis or Speckled-winged Quills will also hatch in the slow water sections
near the park boundary close to Hebgen Lake. Like the Tricos, this hatch can
last almost through the month of September. The spinners fall about the same
time the mayflies hatch, usually in late morning.

Tomorrow I will get into the Caddisflies hatches that occur on the Madison River.
They are just as, if not more important, as the mayfly hatches.

Copyright 2009 James Marsh
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