Idaho ·
Henrys Fork Fly Fishing Report - June 14, 2026
HENRYS FORK
ReportJUN 14 — 21, 2026
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Flow
—CFS
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Water Temp
—
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Weather
41–78°F
Partly Cloudy
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Clarity
Clear
Check post-storm
USGS gauge data unavailable for today's report; recent guide sources indicate flows near 560 CFS and declining from a late-May peak, with excellent water clarity and actively feeding trout. Sunny skies and a high of 73°F Sunday with light NNW winds set up ideal dry-fly conditions for the season's most anticipated opening week.
What's Working — Hot Flies
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Pale Morning Dun (PMD) | #18–20 | Building — trickling now, expected to intensify through opener week | 10:00 AM – 2:00 PM |
| Green Drake | #10–12 | Emerging — first sightings on lower river, caldera arrival imminent | 11:00 AM – 3:00 PM |
| Caddis (various) | #16–18 | Heavy — dominant hatch transitioning to secondary role behind Drakes | 4:00 PM – Dusk |
| Baetis / Blue-Winged Olive | #20–22 | Moderate — active on overcast windows and in shaded runs | Overcast periods, 9:00 AM – Noon |
| Yellow Sally Stonefly | #14–16 | Sporadic — present system-wide, opportunistic rises | Midday |
| Carpenter Ant (terrestrial) | #16 | Opportunistic — blown onto water during warm afternoons | 1:00 PM – 4:00 PM |
Best Time Window
- 9:00 AM – 11:00 AM: Early PMD and Baetis activity in shaded runs; overcast skies from overnight NE winds may linger and extend the BWO window
- 11:00 AM – 2:00 PM: Peak PMD emergence on the flats; first Green Drake sightings possible — prime dry-fly window with sunny 73°F conditions and light NNW winds
- 4:00 PM – Dusk: Caddis evening hatch intensifies; terrestrial ant activity peaks in the warm afternoon before light fades — expect opportunistic surface feeding along grassy banks
Guide's Tip
From the benchTomorrow is the day — the Railroad Ranch opens at first light and the trout have had months of rest. Approach every pod of risers from downstream, stay low, and make your first cast count; these fish have seen pressure before and will spook on a sloppy presentation. Fish a long leader — 12 to 14 feet — with 5X or 6X tippet, and match the specific insect on the water rather than defaulting to a searching pattern. With PMDs, caddis, and potentially Green Drakes all on the menu by midday, carry a few of each and let the fish tell you what they want.
Main Species
Rainbow Trout
Brown Trout
Yellowstone Cutthroat Trout
