Henrys Fork of the Snake River, Box Canyon to Riverside

June 5, 2026

By Barbless, compiled each morning from the gauges, forecasts and sources on this page.

Henrys Fork of the Snake River, Box Canyon to Riverside

Current conditions for Henrys Fork of the Snake River, Box Canyon to Riverside · Map, access and gauges

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Conditions

Fishing is solid through Box Canyon at 600 cfs, with Salmonflies on their way out and Golden Stones and Caddis ramping up. Upstream around Last Chance, conditions have been hit-and-miss, though rising fish are showing in the usual spots around 11:00 AM. Look for Blue Wings, March Browns, and carpenter ants in the mix alongside the stone and caddis activity. Consider Black rubber legs in size 6 or Golden Stone patterns in the pocket water, and keep a Mic Drop in size 16 handy for selective risers.

Gauges

Recommended flies

Black rubber legs (size 6)Mic Drop (size 16)Golden StonesCaddisBlue WingsMarch Browns