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© 2026 Barbless.co. Flow and gauge data from USGS; weather from Open-Meteo. · v2026.10.18.2

  1. Reports
  2. Browse
Oct2026October 2026
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Outlook covers this day

Region

  • All regions
  • North-Central Idaho85
  • Panhandle94
  • Salmon Region21
  • South Central Idaho68
  • Southwest Idaho9
  • Upper Snake / Eastern Idaho96

Rivers & Lakes

  • All waters
  • Big Lost River12
  • Henrys Fork of the Snake River9
  • Henrys Fork of the Snake River, Box Canyon to Riverside13
  • Henrys Fork of the Snake River, Riverside to Mouth / terminus7
  • Henrys Lake6
  • Island Park Reservoir1
  • Mackay Reservoir1
  • Snake River, Osgood Diversion Dam to Henrys Fork1
  • South Fork Snake River36
  • Teton River10

Report Type

  • All types
  • Conditions85
  • Outlook11

Browse Idaho Fishing Reports

Current conditions, flows, and hatch notes for Idaho rivers: updated as new reports are published.

Updated October 19, 2026

Filters:Upper Snake / Eastern IdahoRemove Upper Snake / Eastern Idaho filter

Showing 81–96 of 96 reports

Filters:Upper Snake / Eastern IdahoRemove Upper Snake / Eastern Idaho filter

July 23, 2026

Upper Snake / Eastern Idaho

Teton River

A strong emergence window featuring Pale Morning duns, Western Green drakes, Salmon flies, and Spotted Sedge caddis. Low flows concentrate fish in slower water.

No flow

July 18, 2026

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River, Box Canyon to Riverside

Flows have jumped recently, making conditions mixed across the stretch. Mormon Crickets dominate the bite alongside solid Golden Stone, PMD, and Caddis hatches.

1,480 cfs

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River, Riverside to Mouth

Strong Golden Stone action and stable flows make the Henrys Fork a solid choice right now, with boats reporting consistent daily results.

2,110 cfs

Upper Snake / Eastern Idaho

Henrys Lake

Hot conditions have fish seeking cooler water at springs and creek mouths. Key patterns include leeches, scuds, chironomids, and damselflies.

July 1, 2026

Upper Snake / Eastern Idaho

Big Lost River

The Big Lost River is fishing great across both upper and lower sections, with strong Golden Stonefly, Little Yellow Sally, and PMD hatches in play.

June 12, 2026

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River

Normal flows and stable conditions on the Henrys Fork make it a reliable choice right now. Expect steady water with clarity holding up through the near term.

1,460 cfs ↑

June 10, 2026

Upper Snake / Eastern Idaho

Big Lost River

Covers Jun 10–17

Expect high flows to keep the Big Lost challenging early in this outlook window. Water levels should trend downward as the week progresses, gradually opening up wading opportunities on the lower section. Scout the upper valley during high water; plan a return trip once flows recede.

June 6, 2026

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River, Box Canyon to Riverside

Golden stones and heavy evening caddis are fueling steady improvement on the upper Henrys Fork. Expect Green Drakes to emerge soon.

June 5, 2026

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River, Box Canyon to Riverside

The Fork is fishing well through Box Canyon as Golden Stones and Caddis take over from declining Salmonflies. Upstream sections have been variable, but rising fish reward early-morning focus on classic June patterns.

Page 5 of 5

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Upper Snake / Eastern Idaho

Mackay Reservoir

Mackay Reservoir was holding at 60 feet with steady 400s cfs releases and predictable weekly drawdown. Fish nymphs, dryflies, and streamers depending on conditions.

Upper Snake / Eastern Idaho

South Fork Snake River

Excellent clarity and dropping flows have primed the South Fork for major mayfly and stonefly hatches expected within days. Fish are actively feeding on nymphs now.

5,240 cfs ↓

Upper Snake / Eastern Idaho

Teton River

Low flow conditions across the Teton system. Focus on deeper pockets and shaded water to find active fish.

108 cfs ↓

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River, Riverside to Ashton Reservoir Dam

Lower Henrys Fork is in the thick of seasonal hatching activity. Expect caddis and PMD spinner falls to drive the evening bite, with daytime action sporadic but present. Green Drakes should arrive shortly.

Upper Snake / Eastern Idaho

South Fork Snake River

High water at 13,200 CFS means using heavy flies like rubberlegs and jigs to reach holding fish in the deeper current.

Upper Snake / Eastern Idaho

Teton River

Below-normal flows keep upper Teton sections off-limits, but lower reaches near town fish well on nymphs and streamers.

Upper Snake / Eastern Idaho

Henrys Fork of the Snake River, Riverside to Mouth

Strong insect hatches including Green Drakes, Caddis, and Pale Morning Duns make the Henrys Fork a reliable choice on June 5, with excellent fishing reported across multiple sections.