Henry's Fork Fly Fishing Report
Last Chance, Fremont County, Idaho · Last Updated: May 28, 2026
One of the most celebrated spring creeks in North America, Henry's Fork is synonymous with technical dry fly fishing for large, selective rainbow trout. The Railroad Ranch section offers legendary sight fishing over wary fish rising to PMDs and Green Drakes.
Today's Fishability
Conditions at a Glance
Flow on the Henry's Fork near Island Park is running 588 cfs, 123% above average for the date.
- High water - consider safety
- Flow significantly off optimal
- Moderate winds
How Do You Fish a 5.4/10 Day?
See the fly patterns built for today's conditions, where the fish are holding, and how to work the 7:00 AM - 11:00 AM, 4:00 PM - 7:00 PM window. The full read takes 10 seconds to unlock.
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USGS Water Monitoring
Real-time data from 4 monitoring stations
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Henry's Fork Fly Fishing — FAQ
Is the Henry's Fork fishing well right now?
DriftWise scores the Henry's Fork every morning on a 0–10 fishability scale that weighs real-time USGS flow and water temperature, National Weather Service forecasts, and lunar data. Check the live fishability score and condition summary above for today's rating before you head out.
What is the current water flow on the Henry's Fork?
The Henry's Fork's flow is tracked by USGS streamflow gauges near Last Chance, Fremont County, Idaho and refreshed daily in the condition summary above. Flow is reported in cubic feet per second (cfs) and compared against the seasonal average so you can see whether the river is running high, low, or normal.
What is a good water temperature for trout on the Henry's Fork?
Trout feed most actively when water temperatures sit roughly between 48°F and 62°F. DriftWise reads live Henry's Fork water temperature from USGS sensors near Last Chance, Fremont County, Idaho — see the summary above for the current value.
When is the best time of day to fish the Henry's Fork?
The most productive windows shift with the season: cold months fish best around midday (10 AM–2 PM) once the water warms, while summer rewards early mornings and evenings. Each Henry's Fork report factors in the current season.
Do I need a fishing license to fly fish the Henry's Fork?
Yes. A valid Idaho fishing license is required to fish the Henry's Fork. Check current Idaho regulations for seasons, limits, and any special catch-and-release or fly-fishing-only sections before you go.
Is the DriftWise Henry's Fork fishing report free?
Yes. The daily Henry's Fork condition summary — flow, water temperature, weather, and fishability score — is free. A free account (3 reports per month) unlocks the full AI analysis with fly-pattern recommendations and a detailed hatch forecast.
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