Fly fishing the Salmon Fly Hatch on the Henry’s Fork of the Snake River in Idaho Fly fishing the Salmon Fly Hatch on the Henry’s Fork of the Snake River in Idaho TRRoutfitters2015-03-20T19:42:57+00:00 Salmon Flies Have Arrived on the Henry's Fork of the Snake River in Idaho. The Salmon Flies have arrived on the Henry's Fork Fly fishing the Salmon Fly Hatch on the Henry’s Fork of the Snake River in IdahoTRRoutfitters2015-03-20T19:42:57+00:00