Henry's Fork

Streamer fishing on lower river is picking up as browns begin spawning migrations. Choose low light conditions for best chances of encountering one, and have both somber and bright patterns in that fly box. BWOs and mahoganies are also emerging, so mid-day dry fly fishing can be good. Consider that wind will blow concentrations of these mayflies to the down-wind side of the river, so position yourself accordingly when presenting dun patterns.
Fly Patterns to use:
Harrop’s CDC Water Wasp-Honey
Antonio’s Adult BWO