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

07/03/09


Fly Fishing Yellowstone - Brown Drake Nymph

The Brown Drake is a common Mid-western and Western large mayfly. Their
Latin name is the
Ephemera simulans. They are members of the Ephemeridae
family. We have found them in the Yellowstone River below the lake and the
meadow sections of the Gibbon River. I feel quite sure there are some in many
other streams or areas of other streams with soft bottoms that provide the right
habitat for the burrowing nymphs. They prefer slower moving water of streams
with sand and small stones or pebbles on the bottom. The nymphs spend most
all of their life in the burrows and only come out to molt or feed and of course,
when they get ready to hatch. They feed mostly in low light situations or at night.


When it is time for the hatch, the nymphs come out of their burrows and accent
to the surface hanging just below the surface skim where they shed their
nymphal shuck. They usually drift only a short distance before flying away.
Hatches normally start occurring just before darkness approaches. The hatch
last for just a few days, usually only a week or so in any one location.  

Nymph Presentation:
If you fish during the evening in an area known to hold Brown Drakes, you may
very well catch trout feeding on the feeding nymphs. As just a general rule, we
advise anglers to wait until it get near the time for the nymphs to hatch before
fishing an imitation of the nymph.

You can try to imitate the erratic actions of the nymphs wiggling up and down as
they try to reach the surface, but we usually just allow the fly to dead drift. Our
"Perfect Fly" has a lot of built-in action and movement. If you do add action,
make it short, erratic darts across the stream bottom as you slowly stripping in
line.
Our "Perfect Fly" Brown Drake Nymph

Copyright 2009 James Marsh