South Fork Snake River

September 12, 2026

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

South Fork Snake River

Current conditions for South Fork Snake River · Map, access and gauges

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Conditions

Clear skies with patchy smoke and dropping flows are concentrating Yellowstone Cutthroat, Brown, and Rainbow Trout along banks and inside seams. Focus on slower water and tight line coverage. Gusty SSW winds up to 37 mph will be in play through the weekend, fish early with the wind at your back, and shorten your leader to 9 feet with 4X tippet for hopper and stonefly presentations. Mahogany Duns and Blue-Winged Olives are active midday, while Mutant Stoneflies show in the early morning and terrestrials (hoppers and ants) dominate from noon through early evening, with an evening caddis emergence rounding out the day.

Gauges

Recommended flies

Bionic Hopper - TanBionic Hopper - PurpleBionic Ant 2.0 - BlackBionic Ant 2.0 - BrownEgan's Poacher - OliveTungsten Pat's Rubber Legs - Tan & BrownParachute Adams - Blue Wing OliveTop Secret BaetisOlsen's Straggle Stone Brown BarblessEgan's FrenchieCorn-fed Caddis (CDC) TanCoffey's CH Sparkle Minnow Sculpin

Safety

Gusty SSW winds up to 37 mph through Sunday afternoon.