Idaho ·
South Fork Snake River Fly Fishing Report - June 14, 2026
SOUTH FORK SNAKE RIVER
ReportJUN 14 — 21, 2026
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Flow
—CFS
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Water Temp
—
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Weather
46–80°F
Partly Cloudy
💧
Clarity
Clear
Check post-storm
USGS real-time gauge data is unavailable; per guide reports dated June 7–12, 2026, the South Fork is running approximately 11,250–13,000 cfs out of Palisades Dam with exceptional clarity and water temps near 46–48°F — a drift-boat-only fishery with fish stacked in slower seams, tailouts, and deep buckets.
What's Working — Hot Flies
Tungsten Pat's Rubber Legs - Tan & Brown
#6
Olsen's Straggle Stone Brown Barbless
#12
Egan's Thread Frenchie Jig - Olive
#12
Roza's World Spain Perdigon Barbless
#18
Pheasant Tail Tungsten
#20
Tungsten Split Case Nymph - PMD
#20
Parachute - Blue Wing Olive
#22
Corn-fed Caddis (CDC) Tan
#20
Coffey's CH Sparkle Minnow Sculpin
#6
Egan's GTI Caddis - Olive
#12
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Salmonfly (Pteronarcys californica) — nymphs active subsurface | #4–6 | Building — hatch tracking 7–10 days out; nymphs tumbling in the current now | Midday through afternoon once adults arrive; nymph all day now |
| Blue-Winged Olive (Baetis spp.) | #18–22 | Active — firing well on overcast windows and cloudy afternoons | 10am–2pm, especially on Monday's warmer, partly cloudy afternoon |
| Caddis (Brachycentrus / Hydropsyche) | #16–20 | Emerging — sporadic afternoon activity in riffled sections | 2pm–dusk |
| Midge (Chironomidae) | #20–22 | Consistent — reliable all day in slower seams and eddies | Morning and evening |
| Pale Morning Dun (Ephemerella spp.) | #16–18 | Early season — beginning to show mid-river; will intensify through mid-June | 10am–1pm |
Best Time Window
- 10am–2pm — Prime BWO and early PMD window; watch for rising fish in tailouts and inside seams on any overcast stretch
- 2pm–dusk — Caddis emergence builds in the riffles; switch to the Corn-fed Caddis CDC Tan as activity picks up in faster water
- All day (especially midday) — Nymph deep with Pat's Rubber Legs and Straggle Stone; Salmonfly nymphs are tumbling in the current and fish are stacked in slower buckets
Guide's Tip
From the benchAt these flows the South Fork is a drift-boat-only fishery — wading is not safe, so every cast counts from the boat. Concentrate on the slower water types: buckets behind boulders, tailouts, deep holes, and inside seams where cold-water trout are conserving energy at 46–48°F. With Sunday hitting 74°F and Monday pushing 80°F, the warmest window of the day (roughly 11am–3pm) is your prime feeding period — sleep in, eat a big breakfast, and fish hard through the afternoon. Keep a second rod rigged with the Parachute BWO ready to deploy the instant you see noses in the film, and keep your nymph rig anchored deep the rest of the time.
Main Species
Yellowstone Cutthroat Trout
Brown Trout
Rainbow Trout
