Copyright 2013 James Marsh
Hatches and Trout Flies for the South Fork of the Snake River
Hatches on the South Fork of the Snake River are different from many tailwaters. Some of
the insects, like the large stoneflies, hatch in huge numbers. Hatches occur throughout
much of the year. In order to fish the South Fork successfully and consistently, you must
be able to keep up with and match the hatches.
The first hatch of the year are the Blue-winged Olives. They start about the first of March
and last through April. There is a second hatch that occurs about the first of September
and last on into October. Since the water is usually low during this period of time, the
second hatch can be a good one to fish. March Browns also hatch from about the middle
of March through April.
The last week of April through the month of May, you will usually find the Grannom
(Branchycentrus species) caddis hatching. This hatch is called the Mother's Day hatch in
some areas. The most abundant hatches of caddisflies are different species of Spotted
Sedges. They hatch during July, August and the first part of September. Their Little Sister
Caddisflies also hatch from about the middle of August into September. The final major
caddisfly hatch is the October Caddis which hatches during September and October.
There are several other minor hatches of caddisflies but these are the most important
There is a Skwala Stonefly hatch that occurs from about the middle of April through May.
The huge Salmonflies, a hatch most anglers consider the highlight of the year on the
South Fork, start hatching near the end of June. It is usually at its peak the first two weeks
of July. The Golden Stoneflies start about the same time, or maybe a week later than the
Salmonflies, but last a little longer on through the month of July. The Little Yellow
Stoneflies, often called Yellow Sallies, are almost overlooked because of the larger ones.
They hatch from about the first of July through August and into the month of September.
The Pale Morning Duns represent one of it not the best hatch of the year. These little
mayflies hatch from about the middle of June through August. Mahogany Duns hatch from
about the first of August through the month of September, extending the mayfly hatches
for almost another month. From the middle of June into July you may find a hatch of the
Great Olive Winged Drakes. They hatch on the more moderate sections in the lower part
of the river.
Don't forget the terrestrials. The farming areas surrounding the river tends to increase
what would be a normal population of grasshopper, ants and beetles into large
populations of these land based insects. Imitations of them can be very effective during
June, July, August and September.
As with most any tailwater, midges hatch in huge quantities and for many days of the year.
They are often ignored on the South Fork because of the numerous other hatches, but
imitations of the larvae, pupae and adults will catch fish almost any day of the year.
Some of the most popular flies are streamers. They work great in fooling the larger brown
and cutthroat trout. Imitations of sculpin, minnows and baitfish are very effective at times.
They work great during high water conditions and during the fall when the brown trout
We recommend our "Perfect Flies" not just because we sell them. We recommend them
because we feel they are the best trout flies you can purchase. Our stonefly imitatons are
very realistic and very effective. We have specific caddisflies and mayfly imitations of
every species that hatches on the South Fork of the Snake River. If you haven't done so
already, please give them a try. We guarantee you will be satisfied.
Free Shipping Continental U. S.
100% Satisfaction Guaranteed
South Fork of the
Snake 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.
Shipping is free in the U. S. Orders
over $50 are shipped Priority Mail.