Is the Henry's Fork fishable right now?

Right now the Henry's Fork is running 1,140 cfs, which rates prime against its prime 800–1,200 cfs band. Today's bite odds are 99 out of 100, with mostly cloudy (71% cloud). These are probabilistic odds from live data, not a guarantee — a sharp change in flow is the variable most likely to slow the fishing.

What is the best month to fish the Henry's Fork?

The best months on the Henry's Fork are July, June, September, August. These combine settled flows in the river's prime band with the season's strongest hatches. Henry's Fork's overall season runs year-round tailwater below island park dam; prime june–september.

What flow (cfs) is good for fishing the Henry's Fork?

The Henry's Fork fishes best in roughly the 800–1,200 cfs range (its prime band). It stays fishable from about 400 cfs up toward 1,800 cfs; below that it's low and skinny, and above 1,800 cfs it's typically blown out and off-color. We compare the live USGS discharge to this band on every reading.

Henry's Fork, Idaho fishing report — flows, bite odds & best time to fish

Right now the Henry's Fork is flowing 1,140 cfs — right in its prime fishable band. Today's bite odds rate 99/100 (Prime), and the sky looks mostly cloudy.

1,140 cfscurrent flow

800–1,200prime band (cfs)

71%mostly cloudy

Primetoday's read

Best time to fish the Henry's Fork, Idaho

The best months on the Henry's Fork are July, June, September, August — when the flow settles into its prime band and the hatches line up, the odds genuinely worth booking around. Today's flow is one data point; the next 7 days below show how the bite window is trending. Plan ahead and book a guide for your dates.

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Know when the Henry's Fork is fishing right

Flows and the bite shift week to week. Leave your email and we'll tell you when the Henry's Fork hits its best window — time to book a guide for your dates.

Flow & bite outlook for the Henry's Fork — the next 7 days

Sat 7 AM 99

Sun 7 AM 96

Mon 7 AM 91

Tue 7 AM 85

Wed 7 AM 79

Thu 7 AM 74

Fri 7 AM 71

Day	Flow (cfs)	Sky	Bite
Sat 7 AM	1,140 ✓	71% · mostly cloudy	99 Prime
Sun 7 AM	1,140 ✓	35% · partly cloudy	96 Prime
Mon 7 AM	1,140 ✓	10% · clear skies	91 Prime
Tue 7 AM	1,140 ✓	24% · partly cloudy	85 Prime
Wed 7 AM	1,140 ✓	28% · partly cloudy	79 Prime
Thu 7 AM	1,140 ✓	78% · mostly cloudy	74 Prime
Fri 7 AM	1,140 ✓	51% · mostly cloudy	71 Prime

A ✓ means the flow sits in the Henry's Fork's prime 800–1,200 cfs band — the season and the moon/solunar windows then move each day's bite odds.

Conditions & the best window

The prime bite is dawn and the last hour of light, strongest around the new and full moon. Today's sky on the Henry's Fork looks mostly cloudy (about 71% cloud) — and an overcast day can actually keep fish looking up. Watch the flow as much as the sky: a sharp change in discharge, up or down, can turn the fish off for a day.

Box Canyon rewards heavy nymph rigs fished deep in the first few feet of the drift; the Ranch is a sight-fishing flat where presentation matters more than pattern and a long fine leader is not optional. At the top of the ideal band the canyon fishes better from a boat than on foot.

Guided trips & lodges on the Henry's Fork

Links below go to live FishingBooker search results. We're finalizing our affiliate partnership — once active we'll earn a commission on bookings at no extra cost to you. Disclosure.

A guided day on the Henry's Fork typically runs $475–$650 per boat. A local guide who knows the current flow and the productive water is the fastest way onto fish — book ahead for the dates you want.

Guided fly-fishing float trips on the Henry's Fork

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Half-day walk & wade trips, Henry's Fork

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Multi-day lodges & guided packages near the Henry's Fork

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These are probabilistic fishability odds, not a guarantee. We build them from live USGS streamflow, each river’s published fishable-flow band, the curated season, and a moon/solunar model — flow and weather can change fast, and even a perfect flow on the right moon can fish slow. Some prime days disappoint; some marginal ones surprise. How we compute the score.