Western Fly Hatch Charts for Brown, Rainbow, and Brook Trout

Here are some well vetted fly hatch charts for the US Western Regions.

General Western Region Fly Hatch charts:

Orvis Western Fly Hatch Chart - a general western hatch chart
Dave Brown's Outfitters - Western Canada, South Alberta
Bud Lilly's Trout Shop - Major hatches by river

Montana Hatch Charts:

John Perry's - Montana Fly Fishing Hatch Chart

Washington Hatch Charts:

Yakima River Fly Hatch Chart

Wyoming Hatch Charts:

Jackson Hole Anglers - Jackson Hole Snake River
Wyoming Rivers - courtesy of WyomingFishing.net

 

Whenever possible, I like to use patterns that imitate as closely as possible the food the trout are feeding on. Matching the hatch is often the way to do that. There are times, however, when it just isn't practical to match the hatch. Do not be afraid to try something else if "match the hatch" is not producing.