Copyright 2013 James Marsh
Hatches and Trout Flies for the Big Wood River Idaho
Like many trout streams, the Big Wood River has excellent hatches of Blue-winged Olives
that are about the most consistent hatches that occur. They start in March and last until
mid June and then hatch again during the fall months of September through the first part of

The Green Drakes hatch starting around the first of June and can last until mid July. The
smaller Western Green Drakes or Flavs, start hatching about the first of July and last until
the middle of August. Another consistent hatch is the Pale Morning Dun or PMD hatch that
starts occurring about the middle of June. It can last through the month of July.

Tricos begin hatching in the slow to moderate sections of the Big Wood River in mid
August. They can last through September. The Great Red Quills hatch during the same
time period or from mid August through September. The little Mahogany Duns start
hatching the first of September and can provide good fishing for the entire month.

Stoneflies are an important part of the trout's diet in the Big Wood River. Different species
of Golden stoneflies can hatch all the way from May through October, peaking at different
times depending on the species. Yellow Sallies, or Little Yellow Stoneflies hatch from about
the middle of June, through the middle of July.

Caddisflies are also very plentiful. The Spotted Sedges are the most plentiful species.
They start hatching about the first of June and last through the middle of August. The next
most abundant caddisflies are the Green Sedges.  They hatch from about the first of July
until the first of October. The larvae of these caddisflies, or Green Rock Worms, produce
all season. There are some Short-horned Sedges and other species of caddisflies that
hatch but not in heavy concentrations.

Midges hatch throughout the year. Fish can be taken year round on imitations of their
larvae, pupae and the adults but most anglers use them during the cold water times when
few other insects are hatching.

Terrestrial insects such as grasshoppers, ants and beetles become important about the
first of July. Imitations of them can be effective through September.

The Big Wood River has plenty of sculpin, minnows and baitfish. Streamer imitations of
work during the entire season, especially when there is a little color to the water. They also
produce during low light conditions.

Perfect Flies have been used and tested on this river on several occassions. They not only
are the most realistic trout flies you can purchase, they are the most effective at catching
trout. We have imitations of every type of trout food on the Big Wood River. Please give
them a try if you haven't already done so.
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Big Wood River Idaho
Options For Selecting Flies:
1. Email us with the dates you will be
fishing this stream and we will send
you a list of our fly suggestions. Please
allow up to 24 hours for a response.

2. Call us 800-594-4726 and we will
help you decide which flies you need.

3. Call or email us with a budget for
flies and we will select them and get
them to you in time for your trip.

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over $50 are shipped Priority Mail.