Notice that what happens on the lower Henry’s Fork (Warm River to St. Anthony) is similar to what is going on this time of year on the South Fork. On both rivers flow is dropping to base level. BWOs, mahogany duns, and midges provide the best dry fly fishing. Streamer presentation gains in effectiveness as the fall season advances through November as brown trout make spawning runs. If switching to streamers is to your liking, the best places on the upper river this time of year include Box Canyon, the base and the top of Coffee Pot Rapids, and The Tubs above Mack’s Inn.