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Henrys Fork Fishing Report

Updated Fri, Oct 23, 2026 from live gauge and weather data

The world's most studied trout stream: spring-creek flats, giant rainbows and hatches that set the standard.

3/5
Fair. Fish the windows.A steady pattern: dawn and dusk carry the day.
Flow
947 cfs
Air / High
46 / 52 F
Wind
SSW 21 mph

Sources: USGS gauge 13056500, Open-Meteo, solunar calculated for these coordinates.

Satellite view
Friday
23
October 2026

Today's Fishing Report

Generated this morning from live readings: gauge, weather model, sun and moon. A fresh report is published here every morning.

3/5Fair. Fish the windows.A steady pattern: dawn and dusk carry the day.

Henrys Fork asks for patience today: short windows, precise presentations. The river is running 947 cfs, steady over the week. Today brings cloud cover, wind SSW around 21 mph, steady pressure near 1011 hPa and a high of 52. Water sits around 47 F for the season (estimated). With the waxing gibbous, the solunar majors run 10:05 AM-12:05 PM and 10:35 PM-12:35 AM: the windows to build the day around.

The plan, species by species

Rainbow troutExcellent

In cold water rainbows use the deepest pools in rivers (Vermont), so slow, deep drifts there are the usual approach; Michigan DNR notes lake rainbows are also taken with bait or by jigging through the ice.

Brown troutExcellent

Below 50Β°F, fish slowly through the deeper pools; in early spring on the Great Lakes, Michigan DNR notes browns are often caught inshore before other species start biting.

Tomorrow: Similar at 50 F. The solunar majors shift about 50 minutes later.Next report: Sat, Oct 24, 6:30 AMHow this report is made β†’

Before you go

Idaho requires a fishing licence from age 14, from $35.50 for residents. What a Idaho licence costs and where to buy it β†’

Chasing rainbow trout here? Check the size and bag limits with IDFG before you keep anything. The season dates for Idaho, read off the agency, are on the Idaho seasons page.

Water and weather

Live readings from HENRYS FORK NR REXBURG ID.

Flow, last 30 days

USGS gauge 13056500.

6998731,046947 cfs09/2310/0310/1310/23

Today’s flow against 117 years of October 23

At 947 cfs, the flow at USGS gauge 13056500 (HENRYS FORK NR REXBURG ID) is at the 7th percentile for the date: much below normal. In half of the 117 years of approved record the daily mean on October 23 was below 1,660 cfs; the highest was 3,470 cfs and the lowest 379 cfs.

p10 1,048median 1,660p90 2,422

Percentiles of the daily mean flow for this date, from the USGS Water Data Statistics API for gauge 13056500; today’s reading is the latest instantaneous value. Classes follow the ones the USGS used on its WaterWatch maps (retired at the end of 2025): below 10th, much below normal; 10th–24th, below; 25th–75th, normal; 76th–90th, above; over 90th, much above.

Right now

Latest readings

Air temp46 F
High / Low52 / 40 F
WindSSW 21-32 mph
Pressure1010.9 hPa, steady
Sky / Rain100% cloud, 94%
Sunrise / Sunset07:52 / 18:31
MoonWaxing Gibbous, 91%
Water temp (seasonal)~47 F est.

Bite planner

Hour-by-hour bite forecast for today. Tap a bar to see why.

5 AM8 AM11 AM2 PM5 PM8 PMsunrisesunsetPRIMEPRIME

Which day to fish Henrys Fork this week

The best day on Henrys Fork this week looks like Sunday Oct 25, at 4 out of 5, against 3 today.

Best day this week: Sunday, Oct 25 β€” good at 4/5, falling pressure, usually the best window of a week.

Today, Oct 23 β€” Fair

A steady pattern: dawn and dusk carry the day.

Solunar majors
10:05 AM-12:05 PM and 10:35 PM-12:35 AM
Minor period
4:30 AM-5:30 AM
Sun
07:52 to 18:31
Moon
Waxing Gibbous, 91% lit
Sky and wind
Rain, 20 mph
Rain chance
94%

Forecast-based scores, less reliable further out: how the score is built.

Species guide

The species that matter on Henrys Fork: seasons, structure and how to fish each one. Today's ratings live in the report above.

Rainbow trout illustration

Rainbow trout

Spring and fall in most lakes; rivers fish year-round while the water stays cool

A cold-water trout native to Pacific drainages from Alaska to Baja California, now stocked in most states and fished in rivers, tailwaters and lakes. In cold water rainbows use the deepest pools in rivers (Vermont), so slow, deep drifts there are the usual approach; Michigan DNR notes lake rainbows are also taken with bait or by jigging through the ice.

Brown trout illustration

Brown trout

Spring along Great Lakes shorelines; low light and overcast days in rivers; fall spawning runs

A European trout first stocked in the US in 1883 and now fished in rivers and lakes nationwide; it tolerates warmer water than other trout, and mature stream fish feed mostly at night. Below 50Β°F, fish slowly through the deeper pools; in early spring on the Great Lakes, Michigan DNR notes browns are often caught inshore before other species start biting.

When to come: the Henrys Fork calendar

Activity by species and month, and how the water warms through the year. Tap any cell.

Species activity by month

1 = slow, 5 = peak. Current month highlighted.

J
F
M
A
M
J
J
A
S
O
N
D
Rainbow trout
Brown trout
SlowPeak

Water temperature through the year

Typical surface temperature for this water type; today is around 47 F (estimated, not a reading).

30405060JanMarMayJulSepNovOct, ~47 F now

Angler reports

Real reports from real anglers, reviewed before publishing. The water log below tracks each day automatically.

No angler reports yet this weekBe the first: your report helps every angler who checks Henrys Fork today, and we feature the best catch of the week.

Water log, last days

Auto-logged from live data
Thu, Oct 22

4/5 Good. Solid day ahead. Stable-to-falling pressure and workable wind line things up. Rainbow trout led the card at excellent. High of 68 F, wind to 12 mph.

Wed, Oct 21

3/5 Fair. Fish the windows. A steady pattern: dawn and dusk carry the day. Rainbow trout led the card at excellent. High of 67 F, wind to 10 mph.

Tue, Oct 20

4/5 Good. Solid day ahead. Stable-to-falling pressure and workable wind line things up. Rainbow trout led the card at excellent. High of 67 F, wind to 8 mph.

Where roughly, what depth, what bait. Skip anything you want to keep secret.
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Before you go

License

Idaho requires a valid fishing license for adults. Buy online from the state agency; one-day options exist for visitors.

Regulations

Idaho license. The Ranch section: catch-and-release, flies only, opens June 15. Other reaches vary: check IDFG special rules.

Access

Island Park, Last Chance, Osborne Bridge, Warm River and Ashton accesses; famous fly shops in Last Chance.

About this water

Spring-fed fork of the Snake River, Fremont County, ID. Includes Harriman State Park (the Railroad Ranch), a world benchmark of technical dry-fly water.

Fishing Henrys Fork: the full guide

The graduate school of dry-fly fishing

The Henrys Fork of the Snake is where technical dry-fly fishing reached its final form: the Railroad Ranch's glassy spring-creek flats hold huge, educated rainbows that inspect every leader and refuse most. Around that famous water sits a remarkably varied river: canyon pocket water, tailwater below Island Park Dam, and cottonwood freestone down at Ashton.

A river of chapters

Box Canyon: nymphing heavy pocket water for the river's strongest fish. The Ranch (opens June 15): green drakes, PMDs, flat water and humility. Warm River to Ashton: friendly attractor-dry water perfect for learning. Fall brings streamers and baetis; winter midging below the dam is a local secret. Match the section to your mood: the Fork contains a whole sport.

The Railroad Ranch examination

The Harriman 'Ranch' section is dry-fly fishing's final exam: flat, slick spring-creek water where 20-inch rainbows inspect a green drake for ten seconds before the verdict. June's drake emergence is the celebrated date, but the Ranch rewards all-season craft: downstream reach casts, 14-ft leaders, and acceptance of refusal. Graduate school is a river in Idaho.

Common questions

When do the green drakes hatch on the Ranch?

Right around the June 15 opener into early July: the most anticipated two weeks in western dry-fly fishing, when the biggest rainbows lose their caution for a few hours a day.

Is fishing good at Henrys Fork right now?

Check the daily report at the top of this page: it is regenerated every morning from live data. Today's read: Fair. Fish the windows. A steady pattern: dawn and dusk carry the day.

Nearby waters

Snake River (South Fork)46 miBlackfoot Reservoir61 miJackson Lake66 miHenrys Lake67 miSnake River67 miAmerican Falls Reservoir77 mi

Where this page's numbers come from

River and reservoir readings
USGS 13056500 β€” HENRYS FORK NR REXBURG ID
Read from the USGS Water Data API (api.waterdata.usgs.gov). Latest value timestamped 2026-10-23 at 17:15 UTC.
Weather and pressure
Open-Meteo forecast model
Queried at 43.7527, -111.9577 in this water's own timezone. A model, not an observation.
Moon and solunar windows
Calculated on this site
Astronomical calculation from these coordinates and the date, not a third-party feed. How much weight it deserves.
The written guide on this page
Pablo Ruiz Quintero
How this page was made. The daily report is computed by our scoring engine from live readings; nobody types it. The written guide was drafted with AI assistance. Unlike our newer pages, it does not yet list the official pages its facts were checked against: that audit is under way, and anything it cannot verify will be taken out. Pablo Ruiz Quintero sets every guideline, the data-verification system and the minimum standards a page must meet to be published, reviews page structure and approves what goes live; the responsibility is his, and the AI carries out the work. We work this way because it is how one person can keep every page current with named sources. Errors are published in the verification log; the full policy is in the editorial policy.

Readings refresh on a 30-minute window. The full method, with every figure and its source, is on how our reports are made. Something wrong here? Tell us and it goes in the log with the date.