South Fork Snake River

August 1, 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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Flow

8,400 cfs ↑

Trend

Rising

Observed

64d ago

Conditions

Clear water and solid flows have stacked fish tight to banks in softer seams on the South Fork. Grasshoppers will produce heavy from late morning through afternoon, with ants and PMD nymphs worth considering in the morning and caddis as evening approaches. Mutant stoneflies are in full swing and drawing early-morning interest. Strong afternoon wind gusts demand wind-resistant patterns and a shorter stroke to maintain contact.

Gauges

Techniques

  • Significant number of fish willing to chase stonefly imitations early in the mornings, and eat a dry-dropper with a rubber leg most afternoons.

Recommended flies

Bionic Hopper Tan #12Bionic Hopper Purple #12Bionic Ant 2.0 Black #16Bionic Ant 2.0 Brown #12Tungsten Split Case Nymph PMD #20Stealth Link Mercer PMD #20Parachute Adams Blue Wing Olive #22Corn-fed Caddis CDC Tan #20Coffey's CH Sparkle Minnow Sculpin #6Tungsten Pat's Rubber Legs Tan & Brown #6Egan's Frenchie #12Olsen's Straggle Stone Brown Barbless #12

Safety

Afternoon wind gusts to 37 mph. Position to cast tight to grass and willows during strong gusts.