Copyright 2015 James Marsh
Hatches and Trout Flies for Soda Butte Creek- Yellowstone National
The hatches on the Soda Butte Creek are usually not very prolific but they are varied and
plentiful. The lower meadow sections of the stream have some aquatic insects that are not
present in the other areas of the stream. Something else quite unique to the Lamar Valley area
is the late season hatches of Green Drakes and Flavs. This upper part of this stream stays
cold until late in the summer.
Blue-winged Olives are hatching when the water first clears on Soda Butte Creek.There are
several species including the baetis. There's an early season baetis hatch the first part of July
and the another hatch near the first of September.
Like most other western trout streams, PMDs, or Pale Morning Duns, are the most consistent
hatches of the mayflies on Soda Butte Creek. They are usually hatching when the water first
clears and last into the middle of August.
Spotted Sedges are very plentiful, especially in the meadow sections. They start hatching
around the first part of July and last through August. Little Sister Caddisflies hatch during the
same time period. Green Sedges are very plentiful in the fast water sections. Species of these
caddisflies hatch from about the middle of July all the way into October. Little Short-Horned
Sedges hatch during the second half of July.
Gray Drakes hatch from about the middle of July until the first week of September. This hatch
occurs in the lower meadow sections of the stream. Pale Evening duns, or Heptagenia species
of mayflies, hatch from about the first of August until September.
Near the end of August, fall hatches of Green Drakes start occurring. This can really turn the
trout on. This hatch can last as long as three weeks or so.
Salmonflies are present in the fast water sections. They start hatching about the second week
of July and can last into the first of August depending on the water and weather. Golden
Stoneflies will start hatching about the same time. They will be present in good quantities in the
fast water sections of the stream. Yellow Sallies, or Little Yellow Stoneflies, are also plentiful.
They start hatching the later part of July and last until the second week in August.
You will find Yellow Quills, or the Eperous species, hatching from about the end of July through
August. Western March Browns start hatching about the same time and last through August.
Both of these mayflies prefer the faster sections of the stream such as the riffles and runs.
Grasshoppers, ants and beetles are very plentiful in the meadow sections of Soda Butte
Creek. The high grass along the banks of the meadows are a perfect habitat for them.
Imitations of these insect will work during late July, August, September..
Our "Perfect Flies" have been tested many times on Soda Butte Creek. They have proven to
be more effective than any of the generic or attractor flies. We have specific imitations of
everything that hatches and in all stages of life that the trout eat them in. If you haven't already
tried them, we certainly hope you will.
Soda Butte Creek, YNP
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