Copyright 2013 James Marsh
Hatches and Trout Flies for the Blackfoot River, Montana
The river has an early season hatch of Skwala stoneflies that takes place during March and
April. Winter stoneflies (Nemoura) are also present these two months.

As with most all the streams in the area, baetis mayflies (Blue-winged Olives) hatch from mid
March until mid June. There is yet another hatch that takes place in September, October and
part of November. In the slower sections of the river there is usually a good hatch of Gray
Drakes during the last week of March and the month of April. There is yet another hatch of the
Gray Drakes the last week or so in August and during the month of September.

March Brown mayflies hatch starting about the last week of March and through he month of
April. Another March Brown species hatches starting about the last week of August through
September and into the first week of October. Green Drakes hatch from about the middle of
June into the first or second week of July. The runoff may catch part of this hatch.

Pale Morning Duns, or PMDs, as they are called, hatch from about the first of June all the way
through the month of September, depending on the location. This is one of the better mayfly
hatches. The little Mahogany Duns hatch in September and October.

Tricos hatch in the slower water sections of the stream starting about the last week of July all
the way until the first week or two in October. This is one of the better hatches provided you
can handle the small flies.

The river has a good Salmonfly hatch but it may occur during the spring runoff period. It occurs
from about the last week of May into June. Golden Stoneflies hatch during July and August.
Yellow Sallies hatch from about the first of June through August. All in all, stoneflies are very
important insects in the Blackfoot River.

Several species of caddisflies are present - the Spotted Sedge being the most plentiful. It
generally hatches from the middle of May until the end of August, depending on the particular
species. They are all very similar. Their Little Sister Caddisflies hatch from about the middle of
June through August. Little Short-horned Sedges hatch from about the middle of June through
July.

Different species of Green Sedges hatch from about the middle of June all the way through
September. The Rock Worm, or an imitation of their larva, works great just about all year. The
last big caddisfly hatch is the October Caddis which takes place from about the middle of
September through the middle of October.

Don't overlook terrestrial during the summer. Grasshopper work from about the first week of
July though the month of September. There are also plenty of beetles and ants. There are
even some flying ants, but it is difficult to pinpoint the time you will find them.

Midges hatch throughout the year but are more important during March and April and again in
October when other hatches are slack.

If you want to catch some big trout, don't overlook streamers. The river has a good population
of Sculpin, minnows and other baitfish.

If you haven't done so already, please give our "Perfect Flies" a try. We are certain you will find
them not only the most realistic imitations, but also the most effective flies you can use on the
Blackfoot River. Our stonefly imitations have proven to catch trout from this stream. Our
hatch
chart will provide the flies you need for the dates you plan on fishing the Blackfoot.
Blackfoot River, Montana
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