As of today giant stoneflies are out as far upstream as Mesa Falls. But the cold, wet weather keeps them clinging to land. Warm-up begins tomorrow, so look for them to be flying then. Give the fish a day or so to catch on to the big bugs flopping on the water. Then head to the Henry’s Fork from Warm River to Riverside and on to Box Canyon for some great dry fly fishing. The trick will be to find where the fish are taking drifting adults big time.
Recommended Giant stonefly patterns (size 4, 6) for Henry’s Fork
Berry’s Hedge Hog Stone
Sofa Pillow (traditional and improved)
Joe’s Foam Stone
Rollin Adult Stone
Gould’s Half Salmonfly
Karnupp’s Freestone Salmonfly