Insects and other foods the trout may be eating:
1. Blue-winged Olives - mostly Little BWO - Isolated hatches
2. Giant Black Stoneflies - starting any day, nymphs active
3. Hendricksons - hatching
4. Cinnamon Caddis - Mostly Abrams Creek
5  Light Cahills - Starting any day
6. Midges - hatching in isolated locations
7. Little Short-horned Sedges - should hatch randomly for 2-3 months
8. American March Browns - hatching
9. Streamers - matching sculpin, baitfish and small crawfish
10. Little Yellow Stoneflies - hatching
11. Eastern Green Drakes - starting any day Abrams Creek
12. Green Sedges - hatching
Green Sedges

The Green Sedges are one of the most important caddisflies there are. The reason
is the their larvae provides food for trout for most of their one year life. I did this a
year or so ago, but I will again show a list of different species of this caddisfly that
exist in Great Smoky Mountains National Park. Thank goodness they are all very
similar. It takes a microscope to tell the difference in them. The reason I am showing
the list again is to emphasise the extent of the availability and importance.

This caddisfly is as prevalent as any caddisfly that exist
in the Smokies.  They are in essence a fast water caddis.
Most of the water in the Smokies tends to have a lot of acid.
Most caddisflies prefer water on the alkaline side of the PH
scale. About fifty percent of all caddisflies in trout water
are net spinning caddisflies. They need algae for food.
Most of the cased caddisflies also prefer water that is
slightly alkaline.

Rhyacophila species are "free living" caddisflies. They
do not build cases to live in. They roam around on the
bottom of the streams on top of, down between and
sometimes under the rocks on the bottom. The larva is
called the "Rock Worm". It looks like a little fat worm. The
different species of them are different sizes. Most all of
them can be imitated with either a 18, 16 or 14 hook size fly.

Of course this caddisfly forms a pupa before it hatches into a full grown fly but for
most of its life it exist as a Rock Worm. The pupa is also important to imitate during
the hatch but the problem is determining when the hatch is underway. The different
species can hatch at different times of the year. They start hatching about now and
can hatch through the first part of July. That is a very long hatch period for the
Green Sedges. There may be periods that the hatches of the different species
overlap with one another and there also are periods of time when none of them are
hatching during that two-and one half month time. The problem with this is that you
really never know when to expect them. You just have to notice them when they are
hatching and that is another big problem. It is difficult to determine that a hatch is
occurring before it is to late to do you any good. By the time you start seeing the
Green Sedge adults on the banks and bushes, it is too late to fish the hatch. Your
only opportunity then is to imitate the egg layers.

What is easy to determine is when to imitate the larva. That is any day you are on
the water. You can catch trout year-round on imitations of the Rock Worm. It is a
very effective fly. The trout are used to seeing them. I'll get into that tomorrow.

Copyright 2009 James Marsh
Rhyacophila accola
Rhyacophila acutiloba
Rhyacophila amicis  
Rhyacophila appalachia
Rhyacophila atrata
Rhyacophila carolina  
Rhyacophila carpenteri  
Rhyacophila fuscula
Rhyacophila glaberrima  
Rhyacophila minor
Rhyacophila montana
Rhyacophila mycta  
Rhyacophila nigrita  
Rhyacophila teddyi  
Rhyacophila torva