Copyright 2013 James Marsh
Hatches and Trout Flies for the San Juan River New Mexico
The San Juan River is where the San Juan Worm fly came from. It is still very popular and
used by many anglers. San Juan worms, aquatic worms, are thick in places.

All in all, the mighty midge is the most plentiful food available for the trout and imitations of
them are the most popular flies used on the San Juan River.

Black flies are also plentiful. We have excellent imitations of the black fly larvae, pupae and
adults at Perfect Fly.

Scuds are also plentiful in the San Juan River. Imitations of them will work year-round.
Leeches is another plentiful creature that trout eat in the river.

The most plentiful mayfly is the Blue-winged Olive. There are several species called
blue-winged olives that hatch from about the first of April through August. Pale Morning
Dun hatch in some parts of the river during June and July.

There are a few species of caddisflies but the only ones we have found that are plentiful
are Spotted Sedges. There may be others and if we confirm any additional species in any
significant numbers we will be adding it to the list. The Spotted Sedges hatch in June and

July, August and September is terrestrial season and imitations of ants, beetles and
grasshoppers work well during that time.

One of the most effective flies there is for catching the large San Juan brown trout are
streamers. Don't forget to have a good selection of them. Our "Perfect Fly" Yellow and
White Marabou Sculpin Streamers work great.

If you haven't tried our "Perfect Flies" yet, be sure you do. We have the most realistic and
effective imitations of all the insects, crustaceans and baitfish that are in the San Juan
River. Our midges have been tested and proven very effective on this river.
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San Juan River
New Mexico
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.