Fly Hatch Chart for the Big Thompson River, Colorado

Fly Hatch Chart for the Big Thompson River, Colorado

The Hatch Try These Flies

Time of Year

Attractor Trout Flies

Learn About Attractor Trout Flies

Attractor Nymphs
Attractor Dry Flies
April-October

Baetis or Blue-winged Olive

Learn About The Baetis Mayfly Hatch

 

Baetis Nymphs and Emergers
Baetis Dry Flies

April-May, September-October

Caddis Flies

Learn About The Caddis Hatch

Caddis Larva and Pupa

Caddis Dry Flies
June-September

Nymphs

Dry Flies

July-August
Midge Larva
Midge Pupa or Emergers
Midge Adult Dry Flies
All Year

Nymphs

Dry Flies

June-August

Nymphs

Dry Flies

May-August

Streamers

Wooly Buggers

April, September-November

Dry Flies

August-September