| A |
| Active
presentation |
|
Moving the fly through line action such as a retrieve or twitch |
| Attractor
Fly |
A
fly pattern that does not imitate a particular insect or other trout
food, but is still attractive to trout sometimes. |
| B |
| Back
Eddy |
|
A portion of the river where the shape of the river bank causes
the currant next to the shore to loop in a circle. |
| Behavioral
Drift |
|
Individuals of some insect species release themselves from the river
bottom and drift downstream several yards. This usually occurs at
predictable times of the day, most often dawn and dusk |
| C |
| Cascade |
|
A section of river that falls and drops.
|
| Catastrophic
Drift |
|
Nymphs
or larva that are dislodged and a drift for reasons beyond their instinctual
desires. |
| Cripple |
|
An
emerging insect that is stuck in its pupal or nymphal case and cannot
get out. |
| Cut
Bank |
Where
the water has worked its way under the river bank or lake shore, forming
overhead cover for trout. |
| D |
| Dapping |
|
Tapping the water surface with a dangling fly |
| Dead
Drift |
|
A
drag free drift of the fly either dry or wet. |
| Diptera |
|
The
insect order that includes midges. |
| Downstream |
In
a river, where the water is going to. |
| Downwing
|
Sometime
used to describe aquatic insects that are not Mayflies . Also used
to describe a fly pattern with the wing parallel to the body.
|
| Drag |
Unnatural
fly movement caused by the currant pulling the fly line. |
| Dropper
|
An
additional fly attached above the end of the leader. |
| Dry
Fly |
A
fly that is designed to stay above the surface of the water. |
| Dun |
The
first adult stage of a mayfly. Duns will molt once more into spinners |
| E |
| Emerger |
|
An insect in transition from nymph or pupa. |
| F |
| False
Cast |
|
Casting that does not put the fly on the water. |
| Flat |
|
A
section of river with slow currant and few obstructions |
| Floatant
|
A
material, generally silicon based that you put on the fly to make
it shed water and float better. Also used on the fly line |
| Floating
Line |
A
fly line designed to float on the water surface |
| Foam
Line |
Turbulent water generates foam, which may be concentrated by the currant
into a narrow line |
| G |
| Generic
Fly |
|
A fly whose appearance is general enough that it represents several
types of insects, The Adams is a generic dry fly and the Hares Ear
is a generic nymph. |
| Gillie |
|
In
Scotland and Ireland, a fishing guide. |
| H |
| Hackle |
|
The feathers on a fly. Generally refers to the stiff feathers that
make dry fly sit up on the water surface. |
| Hair
Wing |
A
fly pattern where the wing is made from hair. Typically Deer or Elk.
Hair wing patterns float well in rough water |
| I |
| Imitator
fly |
|
A
fly pattern that intentionally imitates a particular insect. |
| Intermediate
Line |
A
fly line that slowly sinks in the water. Often useful in lakes for
fishing flies near the surface. |
| K |
| |
|
|
| |
|
|
| L |
| Lake |
|
A large section of still water. Some portions of rivers require techniques
normally used on lakes. |
| Larva |
The
primary form of insects with complete metamorphosis, such as caddis
flies and midges. |
| Leech |
A
worm like aquatic critter that swims and is desired by trout. |
| Line
Dressing |
Material
applied to the fly line to make it float better of move through the
rod guides more easily. |
| M |
| Margin
|
|
Very
slow moving portions of a river next to the shore. |
| Mend |
Adjusting
the fly line and or leader to minimize the effect of drag once it's
on the water. |
| Meniscus |
Molecules of water at the surface will adhere to each other and make
a sticky barrier that is difficult for small emergers to break through
from underneath. |
| Molt |
In
the insect world, the process of shedding the external skeleton for
a new one. Nymphs may molt many times before adulthood, each stage
is called an instar. |
| Mud |
A
commercial substance used to help leader break through the surface
tension of the water and sink. |
| Multiple
Hatch |
When
two or more insect species are emerging at the same time. |
| N |
| Nymph |
|
The primary underwater form of insects with incomplete metamorphosis
eg; mayflies, stoneflies, damselflies, dragonflies. |
| Nymph
Net |
A
device used for collecting insects of all stages from the water. |
| O |
| Opportunistic
Feeding |
|
Feeding
upon whatever passes by them. |
| Oviposit |
The process of laying eggs.
|
| P |
| Point
of Vulnerability |
|
The
predictable times in the lifecycle of an insect when it is available
to feeding trout. |
| Pool |
|
A
section of river with almost no currant, usually deep. |
| Pupa |
The final underwater form of insects with complete metamorphosis.
The pupa rises to the surface or crawls to shore and the adult emerges. |
| Q |
| R |
| Rapids |
|
A section of river with fast current and large rocks. |
| Riffle |
|
A
section of river with fast currant and a broken surface. |
| Rise |
|
When
a trout takes an insect or fly near the surface. |
| River
|
A
body of moving water |
| Run |
A
section of river with moderate to fast flow and smooth surface |
| S |
| Sedge |
|
Another name for a caddis fly |
| Selective
feeding |
Feeding locked on a single food type |
| Shuck |
The
nymph case from which the dun emerges |
| Sinking
Line |
Fly
line, which is designed to sink in the water. The entire line sinks |
| Sink
Tip Line |
Fly
line is designed so that the first 10 - 20 feet of the line sinks.
The rest of the line floats |
| Slack
Line |
When
an angler casts the line upstream and it floats back downstream it
create s slack in the line making it difficult to tighten the line
when a fish takes the fly |
| Spinner |
The final adult form of mayflies. In this stage the adults are sexually
mature, mate, and the females lay eggs in the water. Many females
spinners die on the water with their wings spread out flat on their
sides |
| Spinner
Fall |
When
a large fall of spinners fall spent on the surface of the water at
the same time, Trout may feed selectively on them |
| Spring |
An
outflowing of ground water, possibly occurring subsurface |
| Stillborn |
An
adult insect that did not successfully emerge from its nymphal or
pupal case |
| Surface
Film |
Molecules
of water at the surface will adhere to each other and make a sticky
barrier that is difficult for small emergers to break through.
|
| T |
| Tailing
Loop |
|
A casting defect that results in knots in leaders |
| Tail
out |
In
rivers most pools start with a fast riffle or rapids, then a deep
pool, and last an increasingly shallow area prior to the next riffle
or rapids. This last shallow area is the tail out. |
| Thermocline |
A
sudden change in water temperature marking the boundary between masses
of water that are not mixing. Lakes often have thermoclines during
cooler seasons. |
| Tippet |
|
The
final , thinnest section of leader before the fly. |
Turnover
(casting) |
|
As
the cast un-rolls onto the water, the fly should "turnover"
so the fly, leader and line all land in a straight line
|
| Turnover
(lakes) |
|
In
the winter when the lakes ice over the cool water is at the top and
the warm water is at the bottom. After the ice melts the surface water
sinks to the bottom and the warmer water rises to the top |
| U |
| Upstream |
|
In a river, where the water is coming from |
| Upwing |
A
mayfly insect or any fly pattern that has the wing upright and perpendicular
to the body. |
| V |
| |
|
|
| W |
| Wet
Fly |
|
A fly that is designed to be fished under the surface of the water.
Includes nymphs, emergers, streamers, etc. |
| Wind
Knot |
A
knot in the leader usually caused by tailing loops |
| Window |
The
trout's field of view of the waters surface |
| |
|
|
| X |
| Z |
