← Hatches

BWOs

Mayfly

Blue Winged Olives · Baetis tricaudatus

☁️ Best on overcast days Active on 0 of 17 sections today

Fly Patterns

Dries Parachute Adams #12-18 Parachute BWO #16-22 Purple Haze #14-18 Royal Wulff #10-18 Rusty Spinner #14-18 Sparkle Dun BWO #18-20
Nymphs Copper John #14-18 Hare's Ear Nymph #12-18 Pheasant Tail Nymph #14-20 Spanish Bullet #16-18

Where & When

Madison 4 sections

Upper Madison
May–Jun · #16-20
Upper Madison
Sep–Nov · #16-20
Lower Madison
May–Jun · #16-20
Lower Madison
Sep–Nov · #16-20

Gallatin 4 sections

Gallatin Canyon
Mar–May · #14-16
Gallatin Canyon
Sep–Oct · #16-22
Gallatin Valley
Mar–May · #14-16
Gallatin Valley
Sep–Oct · #16-22

Yellowstone 6 sections

Paradise Valley
Mar–May · #14-16
Paradise Valley
Sep–Oct · #16-22
Livingston
Mar–May · #14-16
Livingston
Sep–Oct · #16-22
Lower Yellowstone
Mar–May · #14-16
Lower Yellowstone
Sep–Oct · #16-22

Big Hole 6 sections

Lower Big Hole
Mar–May · #14-16
Lower Big Hole
Sep–Oct · #16-22
Big Hole Canyon
Mar–May · #14-16
Big Hole Canyon
Sep–Oct · #16-22
Upper Big Hole
Mar–May · #14-16
Upper Big Hole
Sep–Oct · #16-22

Beaverhead 4 sections

Upper Beaverhead
Mar–May · #14-16
Upper Beaverhead
Sep–Oct · #16-22
Lower Beaverhead
Mar–May · #14-16
Lower Beaverhead
Sep–Oct · #16-22

Jefferson 4 sections

Upper Jefferson
Mar–May · #14-16
Upper Jefferson
Sep–Oct · #16-22
Lower Jefferson
Mar–May · #14-16
Lower Jefferson
Sep–Oct · #16-22

Ruby 4 sections

Upper Ruby
Mar–May · #14-16
Upper Ruby
Sep–Oct · #16-22
Lower Ruby
Mar–May · #14-16
Lower Ruby
Sep–Oct · #16-22

East Gallatin 2 sections

Bozeman
Mar–May · #14-16
Bozeman
Sep–Oct · #16-22