South Fork Snake River

August 6, 2026

South Fork Snake River

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

Flow

5,950 cfs

Trend

Steady

Observed

7d ago

Hatch Status

Mutant Golden Stones coming off in the mornings. Hatch at night and skitter around in early morning hours. Window usually wraps up around 10:30 or 11.

Conditions

The Fork held steady at elevated flows through early August after a mid-week jump, and fish are responding well to the faster water. Mutant Golden Stones are your early-morning play—night hatch peaks before 10:30–11:00 a.m.—so consider Chernobyl Ants, hoppers, and terrestrial patterns. PMDs are in the riffles but fish are selective; add dropper nymphs, ants, and beetles to your lineup. Don't miss caddis and spinner falls in the evening, or streamers if light fades. Designated campsites between Conant and Byington are open, though Heise Road remains closed—plan your approach accordingly.

Gauges

Techniques

  • Nymphing through the middle of the day has been the best tactic. Hopper-dropper is working well.
  • Ants, beetles, and terrestrials are all effective this time of year.
  • PMDs still in the riffles, though fish are getting pretty picky about them.
  • Streamers are effective in low light and can be thrown all day for catching big fish.
  • Caddis and spinner falls in the evening right before dark are worth being on the water for.

Recommended flies

Chernobyl AntsHoppersDropper nymphsAntsBeetlesTerrestrialsStreamers

Access

Designated campsites between Conant and Byington are open. Heise Road remains closed.