South Fork Snake River

South Fork Snake River fishing report

Map, access and gauges for South Fork Snake River · Fish species · Hatches · Guides

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Flow

2,500 cfs ↓

Trend

Falling

Observed

2d ago

Hatch Status

Daily hatches of Mahogany Duns and Blue Winged Olives between about 10 a.m. and 2 p.m.

Conditions

As of October 16, flows sit at 2,500 cfs and are falling, with clear water and highs in the low 60s expected. Look for Mahogany Duns and Blue Winged Olives between 10 a.m. and 2 p.m., though they're most productive on cloudy days. Consider heavier line and bigger attractors near the edges as flows continue to settle, and have small nymph rigs, emergers, and dries ready for the midday window. Streamers work well too if you want to cover more water.

Gauges

Techniques

  • Switch to double nymph rig set 24 to 36 inches deep around 10 a.m. with small BWO, Mahogany Dun, and midge nymphs.
  • Focus on tailouts, foam lines, and riffles with small BWO and Mahogany emergers and dries when fish start rising.
  • Start morning with streamer while light is low and browns are on the move.
  • Drop to 6X tippet with slow, clear water and fish that have seen flies all season.
  • Switch back to streamers in evening post mayfly hatch.

Recommended flies

StreamersDouble nymph rigs with small BWO, Mahogany Dun, and midge nymphsSmall BWO and Mahogany emergers and dries