Copyright 2013 James Marsh
Hatches and Trout Flies for the Crystal River, Colorado
Keep in mind that the Crystal River headwaters are in a mining district and the river doesn't
have the best habitat for aquatic insects. You will find more of them near the tributary
streams and the area near its confluence with the Roaring Fork River than anywhere else.
The insects listed below may not exist in all parts of the river.
As with most Colorado streams, the Crystal Rivers first hatch of the year is the
Blue-winged Olives. They hatch starting in April and last through most of May. These are
bi-brooded insects that hatch again from the middle of August through September.
The Green Drakes start hatching around the middle of June and last through the month of
July. There are some Red Quills that hatch about the same time as the Green Drakes.
There insects are mostly found near the confluence with the Roaring Fork. You may also
find some PMDs, or Pale Morning Duns near the Roaring Fork. They start hatching in July
and last until the first week or two of August.
Golden Stoneflies hatch from about the middle of June through July. Yellow Sallies, or
Little Yellow Stoneflies, start hatching about the first of June and last on into August.
Neither of these are plentiful, but where they do exist, the trout seem to concentrate on
Probably the most important species of caddisflies are the Brachycentrus species. These
caddisflies start hatching in late April to the first of May and last until second or third week
of May. They are most plentiful near the Roaring Fork River. From June to September you
will find a few Spotted Sedges. They are the most plentiful species of caddisflies on the
river. There are also some Green Caddisflies, or Green Sedges. The larvae of these
caddisflies are called Green Rock Worms. Imitations of them are very effective year-round.
There are a few other species of caddisflies present on the river, but none that hatch in
Terrestrial insects become very important during the summer months from about the
middle of June through September. That is because there are few aquatic insects as
compared with most trout streams. Imitations of grasshopper, ants and beetles are
The Eagle River has some Sculpin, minnows and some baitfish. Streamers are very
effective when the brown trout start to spawn in the fall. They also work anytime the river is
a little off color from rain as well as early in the morning and late in the afternoons.
If you haven't already done so, be sure to try our "Perfect Fly" trout flies. They are the
most realistic and effective flies you can purchase. We are certain you will be glad you did.
We believe in them to the point we guarantee your satisfaction.
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Crystal River Colorado
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