Fly Hatch Chart for the Yellowstone River, Montana

Fly Hatch Chart for the Yellowstone River, Montana

The Hatch Try These Flies

Time of Year

Attractor Trout Flies

Learn About Attractor Trout Flies

Attractor Nymphs
Attractor Dry Flies
June-October

Baetis or Blue-winged Olive

Learn About The Baetis Mayfly Hatch

 

Baetis Nymphs and Emergers
Baetis Dry Flies

June-September

Caddis Flies

Learn About The Caddis Hatch

Caddis Larva and Pupa

Caddis Dry Flies
June-September

Golden Stonefly Trout Fly Patterns

Learn More about the Golden Stonefly Hatch

Nymphs

Adults

July-October
Nymphs and Emergers: Dry Flies:
July-September
Nymphs: Green Drake Emergers Dry Flies:
July-August
Nymphs (Size #18-22): Flav Emerger Patterns (Size #18-22): Dry Flies (Size #18-22):
July-August
Midge Larva
Midge Pupa or Emergers
Midge Adult Dry Flies
All Year
Nymphs:
PMD Emergers: Dries:
July-September

Nymphs

Dry Flies

June-July
April, September-November
July-October

Trico Mayfly

Nymphs: (#18-22) Dries: (#18-22)
August-October