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Home/Flybox/Blue-Winged Olive (BWO)
Blue-Winged Olive (BWO)Dry Flyintermediate

Great Lakes

Blue-Winged Olive (BWO)

Flybox sourcing profile

No TWG price or checkout is active. Use this page to validate the fly, then source it through the mapped tier or trusted fly shops.

Available Sizes#16 - #22
Color Variations
Olive/DunGray/Olive

Pattern Ledger

Source Blue-Winged Olive (BWO)

Want help finding this exact pattern or a tied-to-order equivalent? Join the sourcing ledger and we will prioritize demand by water, species, and pattern.

Sourcing Ledger

Where to source this pattern

TWG checkout is closed. These are current sourcing leads, scored by mapped tier, region, species, fly type, and named-pattern evidence. Confirm availability directly with the tier or shop.

Regional shopStrong match

Schultz Outfitters

Matched on Great Lakes, dry flies, trout. Michigan and Great Lakes shop lead for steelhead, trout, and smallmouth patterns.

Great Lakesdry fliestrout
Visit source
Broad sourceStrong match

Fly Fish Food

Matched on dry flies, trout, mayfly. Strong technical tying and trout catalog coverage, especially nymphs, dries, and stillwater flies.

dry fliestroutmayfly
Visit source
Regional shopStrong match

Dette Flies

Matched on dry flies, trout, mayfly. Catskill lineage fly shop with deep dry-fly, wet-fly, and Northeast trout relevance.

dry fliestroutmayfly
Visit source
Regional shopStrong match

AZ Fly Shop

Matched on dry flies, trout, trout. Arizona and Southwest shop lead for desert trout, bass, canal carp, and warmwater patterns.

dry fliestrout
Visit source
Regional shopStrong match

Davidson River Outfitters

Matched on dry flies, trout, trout. Southern Appalachian trout shop lead tied to the Davidson River and regional freestones.

dry fliestrout
Visit source

The Blue-Winged Olive hatch happens on the grayest, drizzliest, most miserable days of spring and fall -- precisely the days when sensible people stay home. If you are standing in a Great Lakes tributary in light rain watching size 18 mayflies drift past your waders, you are either a trout fisher or profoundly lost. The trout love these conditions. You will too, once you feel that first take.

Quick Facts

TypeDry Fly
Difficultyintermediate
SeasonsSpring, Fall
Target SpeciesBrown Trout, Rainbow Trout
Sizes#16 - #22
Best LocationsAu Sable River, MI; Pere Marquette River, MI; Brule River, WI

Where to Fish It

Au Sable River

MI · Freestone River

Pere Marquette River

MI · Freestone River

Brule River

WI · Freestone River

Map unavailable. Locations for Blue-Winged Olive (BWO): Au Sable River, MI; Pere Marquette River, MI; Brule River, WI

Related Reading

region guide

Great Lakes Fly Fishing: From Hex Hatches to Musky

The Great Lakes region offers a staggering diversity of fly fishing — from legendary Hex hatches on northern Michigan rivers to chrome steelhead on Lake Erie tributaries and trophy muskellunge in the bays. This is the complete guide to fishing the freshwater coast.

hatch guide

The Complete Guide to Mayfly Hatches

Mayflies are the foundation of trout-stream entomology. This guide covers every major hatch — BWOs, PMDs, Green Drakes, Sulphurs, Tricos, and Hendricksons — with the biology, timing, and fly selections you need to fish them effectively across the country.

hatch guide

The Hex Hatch: After Dark on the Great Lakes

The Hex hatch is the defining event of Great Lakes fly fishing — a massive emergence of North America's largest mayfly that happens after dark and brings the biggest brown trout of the year to the surface. This is how to prepare for, find, and fish the most anticipated hatch in the Midwest.

technique

Water Temperature: The Master Variable

Water temperature controls everything. Metabolism, feeding intensity, insect emergence, dissolved oxygen, where fish hold, and whether they'll eat your fly. Understanding thermal dynamics across freshwater and saltwater systems is the single most reliable way to predict fishing quality before you even leave the truck.

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