The 532 Essential Trout Flies
If you carry these 532 flies, you can fish anywhere in North America with confidence. Below is a quick reference — tap any fly for a full breakdown including sizes, water temperature ranges, rigging, presentation, and pro tips.

Midge pupa (Chironomid)

Mayfly nymph (BWO, PMD, Callibaetis)

Caddis pupa, mayfly nymph, generic buggy stuff

Mayfly emerger (BWO, PMD, midge)

Mayfly/stonefly nymph + sinking weight

Aquatic worm (annelid)

Midge or BWO emerger

Flashy mayfly/caddis attractor

Adult caddisfly

Adult Baetis mayfly

Generic mayfly adult

Attractor — no specific bug

Ephemerella mayfly adult

Drunella adult mayfly (one of the largest)

Tricorythodes spinner

Cluster of midges mating on the surface

Adult grasshopper

Adult beetle

Emerging caddis or mayfly

Baitfish, leech, crayfish, big nymph — everything

Midge pupa with air bubble (Chironomid)

Emerging caddis pupa rising to the surface

Sulphur mayfly dun (Ephemerella invaria, E. dorothea)

March Brown mayfly dun (Maccaffertium vicarium)

Adult stonefly, large caddis, or generic big bug attractor

Hopper, large stonefly, or generic foam attractor

Stonefly nymph, mayfly nymph, generic attractor nymph

Trout or salmon egg drifting in the current

Sculpin (bottom-dwelling baitfish trout eat year-round)

Crane fly larva, hellgrammite, or unidentified juicy thing

Generic mayfly nymph with a hot-spot trigger

Generic mayfly nymph — slim, sinks like a stone

Generic small mayfly nymph (BWO, midge), attractor

Mayfly nymph or small stonefly with a flashy back

BWO (Baetis) nymph or emerger

Emerging mayfly dun (BWO, PMD, Callibaetis, Trico)

Adult mayfly dun (PMD, BWO, March Brown, Sulphur)

Generic mayfly attractor (Adams variant)

Emerging caddis pupa rising to the surface

Aquatic worm or earthworm washed into the river

Emerging mayfly or caddis hanging in the surface film

Generic foam attractor — beetle, small hopper, stonefly adult

Adult grasshopper

Stonefly nymph (Salmonfly, Golden Stone, Skwala)

Cranefly larva, caddis larva, generic buggy nymph

Mayfly nymph with extra weight to get deep fast

Yellow Sally / Little Yellow Stonefly nymph

Big baitfish, sculpin, juvenile trout

Leech robbing trout/salmon eggs from a redd

Caddis pupa or scud — heavily weighted

Wounded baitfish, leech, attractor in stained water

Leech, sculpin, baitfish, large nymph

Scud, sow bug, attractor — rainbow flash trigger

Freshwater scud (Gammarus), sow bug, cress bug

Leech

Sculpin, baitfish, large leech — fast-sinking

Baitfish — attractor pattern

Baitfish — minnow, smelt, juvenile trout

Sculpin, baitfish

Sculpin, grasshopper, minnow

Adult Pteronarcys californica (giant Western salmonfly)

Adult Isoperla / Little Yellow Stonefly

Yellow stonefly nymph (Isoperla) before emergence

Black stonefly nymph (Pteronarcys, Acroneuria)

Golden stonefly nymph (Acroneuria, Hesperoperla)

Stonefly, hopper, beetle, generic big-bug attractor

Adult black stonefly (Pteronarcys, early-spring stones)

Adult Skwala stonefly (early spring olive-tan stone)

Stonefly nymph, big terrestrial nymph, attractor

Generic mayfly dun (BWO, PMD, Callibaetis, midge cluster)

Adult caddis, emerging caddis pupa in film

Emerging caddis with trailing pupal shuck

Adult caddis (egg-laying or skittering)

Adult Hexagenia limbata mayfly (largest North American mayfly)

Adult Isonychia bicolor mayfly (Slate Drake)

Adult Paraleptophlebia mayfly (Mahogany Dun)

Adult Epeorus pleuralis mayfly — first major Eastern hatch of spring

Mayfly nymph, caddis pupa, generic buggy nymph (Euro nymphing)

Crane fly larva, grub, big juicy worm-like food

Adult ant, flying ant, drowned terrestrial

Adult field cricket or house cricket

Large hopper, stonefly, and attractor terrestrial

Sculpin, dace, juvenile trout, baitfish

Baitfish, shiner, dace, smolt, minnow

Blue-winged olive emerger

Emerging midge in the surface film

Emerging or crippled Callibaetis mayfly

Swimming damselfly nymph

Leech, dragonfly nymph, bloodworm, suspended stillwater forage

Aquatic sowbug (Asellus / Cress bug)

Freshwater scud (Gammarus / Hyalella), often when molting or wounded

Caddis pupa, scud, and generic buggy bottom forage

Wounded baitfish, juvenile trout, sculpin

Juvenile brown trout, golden shiner, large baitfish

Big leech, large baitfish, generic predator-trigger profile

Sculpin, juvenile trout, large baitfish

Aquatic worm, midge larva, generic high-water trigger

Small leech, juvenile baitfish, generic dark forage

Trout, salmon, or steelhead egg

Mayfly nymph, midge larva, and hot-spot Euro attractor

Mayfly nymph, midge larva, and flashy Euro attractor

Tiny mayfly nymph, midge pupa, and generic slim bait

Mayfly nymph and slender emerging nymphs

Large mayfly nymph, stonefly nymph, and general searching nymph

Midge larva, small worm, and Euro attractor nymph

Leech, baitfish, and large aquatic nymphs

Small leech and tiny baitfish

Sculpin, baitfish, and compact articulated preyfish

Adult caddis

Generic mayfly nymph and small attractor food forms

Generic mayfly nymph with a hot-spot trigger

Adult ant and small terrestrial

Emerging mayfly and soft-hackle nymph

Tiny baitfish, midge pupa, and Euro attractor nymph

Caddis larva and free-living caseless caddis

Aquatic sowbug (Asellus)

Slim mayfly nymph and Euro attractor

Mayfly nymph attractor and slim Euro nymph

Adult spruce moth (Choristoneura) and large tan caddis

Emerging caddis or mayfly trapped in its pupal/nymphal shuck

Attractor — no specific natural; a flashy general invitation

Emerging mayfly, drowned adult, or generic active nymph

Pale evening mayfly duns (Stenacron, Stenonema, light sulphurs)

Small black terrestrials, midges, and dark caddis adults

Attractor — small dark hatching insects, midge clusters, terrestrials

Large baitfish, sculpin, or simply a big intimidating meal

Sculpin and large baitfish

Mid-size baitfish and small sculpin

Sculpin and broad-bodied baitfish

Midge pupa, caddis larva

Midge pupa with gas bubble

Adult midge / blood midge pupa

Caddis larva (free-living rhyacophila)

Trout or salmon egg

Mysis shrimp (freshwater opossum shrimp)

Leech, baitfish, large nymph

Sculpin, large baitfish

Baitfish (shad, shiner, perch, trout fry)

Wounded baitfish, sculpin

Stuck-in-shuck mayfly emerger (PMD, BWO, Callibaetis, Green Drake)

Mayfly emerger / midge emerger with gas bubble

Emerging mayfly (PMD, BWO, sulphur, Callibaetis)

Mayfly emerger trapped in the surface film

Spent mayfly spinner (post-spawn adult)

Spent Trico mayfly spinner

Spent Pale Morning Dun spinner

Adult Dicosmoecus caddis

Adult caddis

Attractor — generic adult insect / caddis silhouette

Attractor — generic mayfly silhouette

Attractor — hopper/stonefly/large terrestrial

Attractor — hopper, stonefly, large terrestrial

Attractor — caddis/stonefly/terrestrial silhouette

Adult pale evening dun mayfly (Ephemerella)

Leech, dragonfly nymph, and general stillwater forage

Caterpillar, stonefly nymph, hellgrammite, or general attractor

Winged flying ant

Adult grasshopper

Natural grasshopper

Adult cricket

Inchworm or small caterpillar

Caddis pupa, mayfly nymph, and general buggy nymphs

Small baitfish, cased caddis, and attractor wet-fly forms

Large stonefly nymph

Large stonefly nymph

Golden stonefly nymph, mayfly nymph, and general Southern freestone forage

Caddis pupa, mayfly nymph, and general soft buggy nymphs

Mayfly nymph with an added trigger point

Adult caddis

Emerging caddis with trailing shuck

Adult brown drake mayfly

Adult Isonychia mayfly

Adult cinnamon caddis

Swimming mouse or vole

Crayfish

Adult grasshopper

Large foam grasshopper

Adult blue damselfly

Leech, small baitfish, and attractor wet-fly forms

Scuds, freshwater shrimp, sowbugs, and generic subsurface food

General mayfly and caddis nymphs

Caddis adults, emerging insects, and attractor dry-fly forms

Scuds, sowbugs, and general small nymphs

Minnows, wet flies, baitfish, and general attractor food

Smelt and slender baitfish

Blacknose dace and other small minnows

Small baitfish, leeches, and attractor streamer forms

Emerging caddis, ascending pupae, and soft-bodied wet insects

Green caddis pupae, emergers, and ascending soft-bodied insects

Tiny dark emergers, midges, and small mayfly pupae

Small dark mayflies, drowned adults, and emergers

Mayfly emergers trapped in or just under the film

Small caddis adults and emergers

Pale mayflies and general upwinged duns

Olive mayflies, soft emergers, and general wet-fly prey

Large drake mayflies

Yellow drake mayflies

Crippled mayflies trapped in the surface film

Mayfly emergers in the film

Blue-winged olive emergers

Adult salmonflies and large stoneflies

Adult salmonflies and large stoneflies

Hexagenia burrowing mayfly nymphs

Sculpins and bottom-hugging baitfish

Adult grasshoppers and large terrestrial insects

Small mayfly nymphs and general subsurface drift insects

Slim mayfly nymphs, midges, and small olive drift insects

Emerging midges and tiny ascending chironomids

Midge larvae and pupae

Pale midge larvae and small translucent aquatic insects

Midge pupae with an attractor twist

Large baitfish, leeches, and aggressive territorial prey

Sculpins, baitfish, leeches, and large wounded prey

Baitfish, juvenile trout, and intrusive predatory prey

Mayfly nymphs, especially baetis and other slim swimmers

Emerging mayflies and lightly active nymphs

Small baitfish, juvenile trout, and sculpins

Large baitfish, sculpins, and aggressive forage targets

Baitfish, sculpins, leeches, and territorial intruders

Emerging caddis, mayflies, and general wet insects

Adult Stenonema and other dark-bodied mayflies

Male Hendrickson (Ephemerella subvaria) and similar mayflies

Female Hendrickson mayfly dun

Spent female Hendrickson mayfly

BWO (Baetis) dun and emerging mayfly

Sulphur (Ephemerella invaria/dorothea) dun

Emerging Pale Morning Dun mayfly

Spent female Sulphur mayfly

Spent female Green Drake (Ephemera guttulata) spinner

Spent female Brown Drake (Ephemera simulans) spinner

Generic large mayflies, caddis, and attractor profile

Generic mayfly attractor with high visibility

Generic attractor — mayflies, caddis, terrestrials

Caddis or generic attractor

Emerging caddis or mayfly cripple

Mayfly nymph with attractor trigger

Emerging caddis pupa

Female caddis diving underwater to lay eggs

Cased caddis larva with peeking head

Emerging caddis with trailing pupal shuck

Generic caddis larva or mayfly nymph with hot-spot trigger

Mayfly nymphs, cased caddis, generic food

Stonefly nymph, large mayfly nymph, generic dark food

Loose cluster of fish eggs

Adult stonefly, hopper, or large terrestrial

General mayfly dun, caddis, and low-riding attractor

Mayfly duns, especially on smooth water

Baitfish, sculpins, leeches, and small trout forage

Smelt, minnows, and bright baitfish silhouettes

Blue Quill and other small dark mayfly duns

Gray Fox and related mayfly duns

Emerging caddis, mayflies, and small dark wet insects

Emergers, small attractor insects, and general wet-fly prey

Small leeches, drowned insects, midge pupae, and dark aquatic prey

Small baitfish, fry, and flashy attractor prey

General wet insects, emergers, and bright attractor prey

Drowned mayflies, caddis, and general aquatic insects

Cased caddis, stonefly nymphs, and large mayfly nymphs

Caddis pupa and emerging caddis

Stonefly nymphs and large mayfly nymphs

Mayfly nymphs, caddis larvae, damsel nymphs, and general aquatic food

Mayfly nymphs, caddis larvae, scuds, and general gray aquatic insects

Stonefly nymph, mayfly nymph, and attractor nymph

Chironomid midge pupa

Gas-filled chironomid pupa

Red midge larva and chironomid pupa

Leeches, baitfish, damselfly nymphs, and small sculpins

Baitfish, leeches, crayfish, and small sculpins

Sculpins, crayfish, gobies, and bottom-oriented baitfish

Baitfish, leeches, and high-contrast attractor prey

Iron Blue duns and other small dark mayflies

Emerging caddis, mayflies, and general soft-bodied insects

Small mayfly and midge emergers

Dragonfly nymphs, damselfly nymphs, leeches, and general stillwater forage
Caddis, hoppers, beetles, and general attractor prey

Adult caddis and sedges

Dark beetles, drowned insects, and general attractor prey

Emergers, bright wet insects, and attractor prey

Large wet insects, beetles, and attractor prey

Dark wet insects, beetles, and general attractor prey

Midge pupae, nymphs, and tiny aquatic insects

Adult crane flies and large terrestrials

Small baitfish, fry, and flashy attractor prey

Leeches, fry, tadpoles, and dark attractor prey

Stonefly nymphs, dragon nymphs, beetles, and attractor food

Large ant, hopper, beetle, and general terrestrial attractor

Baetis nymphs, small mayflies, and attractor nymph prey

Adult midges and tiny black gnats

Midge larva and small annelid-like subsurface prey

Caddis pupa and emerging caddis larvae

Soft hackle emerger, drowned insect, and suggestive general prey

Smelt, dace, shiners, and slender baitfish

Wet insects, small baitfish, and attractor prey

Small baitfish, bright wet insects, and attractor prey

Small baitfish, wet insects, and flashy attractor prey

Mayfly nymphs and general slim subsurface food

Small mayfly nymphs and attractor-style subsurface prey

Small mayfly nymphs

Dark mayfly nymphs and general attractor prey

Small dark mayfly nymphs

Mayfly nymphs, caddis larvae, and general drifting food

Small mayfly nymphs and attractor-style subsurface prey

Stonefly nymphs

Caddis larvae and caddis pupae

Small mayfly nymphs and attractor food forms

Caddis pupae and emerging caddis

Caddis pupae

Cranefly larvae and other elongated aquatic larvae

Drowned ants, beetles, and dark attractor prey

Small mayfly nymphs and generic subsurface prey

Small mayfly nymphs

Blue-winged olive nymphs and other small olive mayflies

Mayfly nymphs, caddis larvae, and general drifting food

Small mayfly nymphs and attractor-style food items

Small mayfly nymphs and attractor prey

Mayfly nymphs and emerging subsurface insects

Small mayfly nymphs

Mayfly nymphs

Stonefly nymphs, caddis larvae, and general larger aquatic insects

Caddis larvae

Stonefly nymphs

Stonefly nymphs

Dark mayfly nymphs and general subsurface attractor prey

Small mayfly nymphs and attractor prey

Small mayfly nymphs and attractor prey

Mayfly nymphs

Mayfly nymphs, caddis larvae, and general subsurface drift food

Caddis larvae, mayfly nymphs, and general subsurface food

Mayfly nymphs and emerging subsurface insects

Caddis larvae, crane larvae, and general subsurface food

Pale mayfly nymphs and attractor-style small subsurface prey

Dark mayfly nymphs and attractor prey

Small mayfly nymphs and attractor prey

Olive mayfly nymphs and small subsurface attractor prey

Small mayfly nymphs and attractor-style drifting prey

Caddis larvae, cranefly larvae, and general subsurface food

Caddis larvae and general drifting aquatic food

Small mayfly nymphs and attractor prey

Dark mayfly nymphs and attractor prey

Olive mayfly nymphs

Tiny mayfly nymphs

Scuds and freshwater shrimp

Small mayfly nymphs and attractor prey

Dark mayfly nymphs and attractor-style prey

Mayfly nymphs and attractor prey

Small dark mayfly nymphs and midges

Small brown mayfly nymphs

Dark mayfly nymphs in pressured water

Mayfly nymphs with extra trigger flash

Mayfly nymphs and attractor prey in clear water

Small mayfly nymphs and midges on technical tailwaters

PMD nymphs and yellow mayfly nymphs

BWO and olive mayfly nymphs

Caddis larvae and bright attractor prey

Scuds, sow bugs, and attractor nymphs

Mayfly nymphs with red trigger

Mayfly nymphs and attractor nymphs

Mayfly nymphs in deep fast water

Mayfly nymphs in low light and stained water

PMD nymphs and sulphur nymphs

Stonefly nymphs and attractor prey in deep runs

Stonefly nymphs in heavy water

Stonefly nymphs with flash trigger

Stonefly nymphs on tight-line rigs

Olive stonefly and mayfly nymphs

Stonefly nymphs and attractor prey

Stonefly nymphs and emergers

Stonefly nymphs in deep fast water

Caddis larvae and bright attractor nymphs

Mayfly nymphs and weighted attractor nymph

Mayfly nymphs in fast water

Stonefly nymphs in heavy current

Midge pupae in deep cold water

Freshwater sow bug (Asellus)

Adult Ephoron mayfly (White Fly)

Sulphur mayfly emerger (Ephemerella)

Adult cicada (annual and periodical)

Winged ant (carpenter and field species)

Adult Ephemerella subvaria mayfly (Hendrickson)

Adult Brachycentrus caddis (Mother's Day Caddis)

Loose drifting salmon or trout eggs

Decaying salmon flesh and salmon carcass scraps

General mayflies and attractor dry-fly silhouettes

General attractor dry fly rather than one exact insect

Gray mayflies and broad attractor dry silhouettes

Brown mayflies, caddis, and attractor dry forms

Bright attractor surface food and high-visibility summer insects

Caddis, stoneflies, and attractor dry silhouettes

Bright caddis, attractor dries, and general summer surface food

Yellow sallies, small stoneflies, caddis, and attractor surface food

Pale moths, light mayflies, and evening surface insects

Light Cahill and other pale mayfly duns

Dark mayfly duns and cool-weather evening mayflies

Light Cahill-type mayflies and pale summer duns

Blue Quill emergers and crippled small spring mayflies

Mahogany duns and crippled fall mayfly emergers

Spent Callibaetis mayflies

Callibaetis duns

Emerging and newly emerged Callibaetis duns

Trico duns

Crippled Trico emergers and trapped adults

Blue-winged olive and other small olive mayfly cripples

Crippled Pale Morning Dun emergers

Crippled blue-winged olive emergers

Crippled Hendrickson emergers

Spent March Brown mayflies

Spent Light Cahill and other pale spinner mayflies

Trapped mayfly emergers (BWO, PMD, Callibaetis, sulphur)

Mayfly emergers and trapped duns

Spent mayfly spinners

Emerging mayflies (BWO, PMD, sulphur, Callibaetis)

Crippled mayfly emergers (PMD, BWO, sulphur)

Adult golden stoneflies

Adult salmonflies (Pteronarcys)

Adult stoneflies and large attractor surface food

Adult salmonflies and golden stoneflies

Adult salmonflies

Adult salmonflies

Adult salmonflies

Adult little yellow stoneflies (Isoperla)

Adult golden stoneflies

Adult salmonflies (Pteronarcys)

Spent adult caddis

Adult and emerging caddis

Emerging caddis

Adult caddis

Adult caddis

Emerging caddis with trailing pupal shuck

Adult caddis

Dark adult caddis

Olive adult caddis

Tan adult caddis

Small mayfly nymphs and attractor nymph profiles

Slim baetis and general small nymph forms

Small dark nymphs and attractor subsurface food

Small olive nymphs with attractor color cues

General small mayfly and caddis nymphs

Small segmented mayfly nymphs

Baetis and olive mayfly nymphs

Dark baetis, midges, and generic small nymphs

Segmented mayfly nymphs

Midges, mayfly nymphs, and eggy flash-food cues

Caddis larvae and orange aquatic grubs

Olive caddis larvae and net-spinning caddis

Wormy larva forms and attractor subsurface food

Stonefly and large mayfly nymphs

Cranefly larvae, caddis larvae, and generic buggy subsurface food

Buggy larval food with attractor trigger

Grubs, crane larvae, and soft-bodied attractor food

Bright grub or attractor food forms

Earthworms and aquatic worms

Worms and drifting annelids

Emerging mayflies and soft-bodied nymphs

Dark mayfly nymphs and general attractor nymphs

Mayfly nymphs and general searching nymph silhouettes

General mayfly nymphs with attractor trigger

Mayfly nymphs and emerging subsurface insects

Leeches, dragonfly nymphs, small baitfish, and dark aquatic prey

Leeches, olive baitfish, sculpins, and swimming nymphs

Minnows, small white baitfish, and flashy stillwater forage

Leeches, crayfish tones, and brown bottom-oriented forage

Sculpins, leeches, and baitfish in deeper current seams

Sculpins, juvenile baitfish, and broad-headed forage fish

Sculpins, juvenile trout, and large baitfish

Large leeches, sculpins, and dark baitfish silhouettes

Small sculpins and juvenile baitfish

Sculpins, baitfish, and larger swimming prey

Large baitfish and sculpin-like prey

Smaller baitfish and sculpins

Sculpins and broad-headed baitfish

Sculpins, baitfish, and even large terrestrials when waked

Leeches, sculpins, and dark baitfish

Small baitfish and attractor prey

Smelt, dace, and slim baitfish

Smelt and silver-sided baitfish

Bright attractor baitfish and flashy forage

Attractor baitfish and bright general forage

Shad, smelt, and bright narrow baitfish

Jigging minnows and compact baitfish

Sculpins and broad bottom-dwelling baitfish

Leeches, baitfish, crayfish, and general large forage

Baitfish, leeches, and attractor streamer prey

Pale Morning Dun duns and other light summer mayflies

Small dark mayfly nymphs and general subsurface aquatic insects

Mayfly nymphs, small stoneflies, and general searching nymph profiles

Large stonefly nymphs and other bulky bottom-dwelling aquatic insects

Emerging mayflies and tiny dark emergers in the surface film

Emerging mayflies and caddis trapped in the film

Adult caddis and small floating insects

Emerging mayflies with trailing shucks

Rusty mayfly spinners during evening falls

Spent mayfly spinners after mating falls

Adult Hexagenia mayflies

Brown Drake mayfly duns

Slate Drake or Isonychia duns

Emerging tan caddis adults

Emerging caddis pupa and adults in transition

Emerging olive caddis pupa

Adult caddis and general mottled dry-fly insects

Emerging mayflies, caddis, and general soft-bodied aquatic insects

Emerging mayflies and ascending nymphs

Small emergers, drowned flies, and soft-bodied aquatic insects

Pale emergers, light mayflies, and small soft-bodied insects

Dark emergers, small black caddis, and tiny soft-bodied insects

Pale mayfly duns and general upright-winged mayflies

Grasshoppers and larger windblown terrestrials

Grasshoppers and large terrestrial insects

Sculpins, juvenile baitfish, and bottom-oriented forage

Large baitfish, sculpins, and juvenile trout

Leeches, dark baitfish, and general large prey silhouettes

Sculpins, juvenile trout, and bulky baitfish

Bright baitfish, juvenile perch, and attractor prey profiles

Large baitfish and fleeing juvenile fish

Crayfish-toned baitfish, sculpins, and attractor prey

Shad-like baitfish, smelt, and suspended forage fish

Small baitfish, juvenile trout, and compact sculpins

Light-colored baitfish, juvenile whitefish, and pale sculpins

Dark sculpins, leeches, and large shadowy prey

Leeches, sculpins, and slow-moving baitfish

Sculpins and compact baitfish

Large baitfish, juvenile trout, and substantial predatory forage

Sculpins and dense bottom-hugging baitfish

Sculpins and broad-headed bottom forage

Sculpins and large baitfish

Sculpins, juvenile trout, and baitfish

Baitfish, juvenile trout, and large soft-riding prey

Smelt, shad, and open-water baitfish

Smelt, shiners, and narrow baitfish

Baitfish, smelt, and elongated open-water forage

Minnows and small baitfish near cover

Stonefly nymphs, leeches, crayfish, and general buggy prey

Bright baitfish and aggressive attractor prey profiles
How to Use This Guide
Match the water temp first. Cold water (under 50°F) means midges and small nymphs. Mid-range water (50-65°F) opens up mayflies, caddis, and emergers. Warm water (above 65°F) brings hoppers and terrestrials.
Then match the flow. High water (over 600 CFS) calls for streamers like the Woolly Bugger. Normal flows fish best with two-fly nymph rigs or a dry-dropper. Low clear water demands smaller flies and longer leaders.
When in doubt, throw an Adams or a Hare's Ear. They've fooled trout for over a century for a reason.