Henry's Fork of the Snake River, Box Canyon to Riverside

Clear water and good visibility set up well for sight-casting on the Henry's Fork. As of September 14, flows held steady at 1,140 cfs. Morning overcast is giving way to afternoon gusts reaching 32 mph, so plan your morning hatch window (midge and nymphs 7–10 AM) and the midday push (Mahogany Duns and Blue-Winged Olives 10:30 AM–1:30 PM) before winds take over. Evening terrestrial and caddis action 5:30–7:30 PM offers a second window if you can time the lighter breezes.