Henry's Fork

From Ashton Dam upstream to the bottom of Box Canyon whether you are wading or float fishing, presenting terrestrial insect patterns is effective especially during afternoon hours. Fishing trico dun & spinner patterns early in the day is another way to action, but a bit tougher on the eyes than presenting hopper patterns.
Fly Patterns to use:
Bionic Ant 2.0 Brown
CDC Biot Rusty Spinner
Pheasant Tail Flashback