Copyright 2018 James Marsh
Hatches and Flies for Duck Creek (YNP)
Duck Creek and its many tributaries all are meadow streams with slow to moderate water
and soft bottoms. Some bottoms are cobble and sand.
Blue-winged Olives, Baetis species, are hatching when the season first opens. They last
until the end of the month of June. Runoff can affect this period of time. They are
bi-brooded and hatch again staring about the first of September and lasting until the
Most of the caddisflies are Spotted Sedges. They are very plentiful. Some species of long
horn sedges are present but we haven't found them in large quantities. They hatch from
about the first of July until the end of September.
As you may expect, the PMDs, or Pale Morning Duns, are the most plentiful mayfly on
these small streams. They start about the end of June, and last all the way to the first of
August. We have also found a few Green Drakes and Flavs, or small Western Green
Drakes present in July, but they are not plentiful.
Gray Drakes and Brown Drakes are two of the better hatches that occur in these small
meadow streams. The Gray Drakes hatch from near the end of June until the second week
of July most years. The Brown Drakes hatch around the same time period. Speckled-wing
Quills or Callibaetis hatch from about the middle of July through the middle of September in
some parts of the streams.
Terrestrial insects are very plentiful on Duck Creek. Imitations of grasshoppers, ants and
beetles will catch trout from about the first of July until the middle to end of September.
We have "Perfect Fly" imitations of every insect that hatches in Yellowstone National Park.
Many of our flies were developed there. If you haven't already done so, we encourage you
to give them a try. They are not only are the most realistic flies you can buy, they are the
most effective at catching trout.
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Duck Creek (YNP)