Fly Hatch Chart for the Big Horn River, Wyoming

The Hatch

Try These Flies

Time of Year

Aquatic Worms (San Juan Worms)

All 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

March-June, September-November

Caddis Flies

Learn About The Caddis Hatch

Caddis Larva and Pupa

Caddis Dry Flies

April-October

Damsel Fly Patterns

Dansel Nymphs:

Dry Flies:

All Year

Green Drake Mayfly

May-June

Little Yellow Stonefly or Yellow Sally

Learn About The Little Yellow Stonefly Hatch

Stonefly Nymphs
Yellow Sally Adult Stoneflies

June-September

Midges or Chironomids

Learn About The Midge or Chironomid Hatch

Midge Larva
Midge Pupa or Emergers
Midge Adult Dry Flies

All Year

Pale Morning Dun or PMD (Ephemerella)

Learn About The PMD Hatch

PMD Nymphs and Emergers
Mayfly Emergers
PMD Dun & Spinner

June-October

Scuds & Shrimp

All Year

Streamers

Wooly Buggers

April-May, September-November

Terrestrials

June-October