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

  1. Reports
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Oct2026October 2026
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Outlook covers this day

Region

  • All regions
  • North-Central Idaho0
  • Panhandle0
  • Salmon Region11
  • South Central Idaho33
  • Southwest Idaho0
  • Upper Snake / Eastern Idaho11

Rivers & Lakes

  • All waters
  • Big Lost River11
  • Big Wood River11
  • Salmon River11
  • Silver Creek11
  • South Fork Boise River11

Report Type

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  • Conditions315
  • Outlook55

Browse Idaho Fishing Reports

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

Updated October 18, 2026

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Showing 1–20 of 55 reports

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September 30, 2026

Upper Snake / Eastern Idaho

Big Lost River

Covers Sep 30–Oct 7

Plan to fish the Big Lost in the afternoons next week when water warms. Flows are dropping across the system, creating good opportunities in shallow seams and deeper runs.

108 cfs ↓

South Central Idaho

Big Wood River

Covers Sep 30–Oct 7

Low, clear flows on the Big Wood through early October should produce good fishing as Baetis hatches and cooler water activate the trout. Fish shallow tailouts and riffles with a careful approach.

1.9 cfs ↓

Salmon Region

Salmon River

Covers Sep 30–Oct 7

Normal flows and prime water temps set up the Salmon River for solid fishing this week, with fish willing to take dries and nymphs in structured water around Stanley.

3,660 cfs ↓

South Central Idaho

Silver Creek

Covers Sep 30–Oct 7

Low, clear conditions and cool water temps make early October a prime window for Silver Creek, with pre-spawn browns on the feed and steady hatches of Baetis and Mahogany duns.

78 cfs

South Central Idaho

South Fork Boise River

Covers Sep 30–Oct 7

The South Fork holds steady flows and 51-degree water into early October, with daytime dry-fly action on Pinks and Baetis and an evening caddis hatch worth your time.

309 cfs

September 23, 2026

Upper Snake / Eastern Idaho

Big Lost River

Covers Sep 23–30

The Big Lost is running low and clear with wary fish and good fall hatches of Tricos and Baetis through September 30.

120 cfs ↑

September 16, 2026

Upper Snake / Eastern Idaho

Big Lost River

Covers Sep 16–23

Low water is concentrating Big Lost River trout into prime holding zones where fall Baetis and caddis patterns should produce once fish settle in.

September 9, 2026

Upper Snake / Eastern Idaho

Big Lost River

Covers Sep 9–16

Low water defines the Big Lost this week, from stealth-demanding headwaters to wadeable but pushy flows below Mackay. Morning Tricos and Baetis give way to crane flies and quiet afternoons; small nymphs and midges work when surface activity slows.

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South Central Idaho

Big Wood River

Covers Sep 23–30

Hecubas and afternoon Baetis hatches should anchor the week ahead on the Big Wood, with stable flows and warming afternoons favoring Red Quills and terrestrial patterns.

2.4 cfs

Salmon Region

Salmon River

Covers Sep 23–30

Early fall on the Salmon offers leisurely mornings and prime conditions for caddis and attractors as the day warms, with water at an ideal 65 degrees.

4,290 cfs ↑

South Central Idaho

Silver Creek

Covers Sep 23–30

Silver Creek offers excellent fall dry fly fishing with stable flows and prime water temperatures, though Kilpatrick Bridge and Preserve access remain closed through early January.

75 cfs

South Central Idaho

South Fork Boise River

Covers Sep 23–30

The South Fork offers ideal wading conditions this week with stable 300 cfs flows and prime 53-degree water. Evening caddis, Flavs, and fall Baetis should keep you occupied through late September.

300 cfs

South Central Idaho

Big Wood River

Covers Sep 16–23

Red Quills and Fall Baetis are active on the Big Wood, with fish feeding in tailouts and riffles but spooky to approach. Stable, low flows favor careful sight-casting through mid-September.

1.7 cfs

Salmon Region

Salmon River

Covers Sep 16–23

Stable flows and warming afternoon temps should bring steady October Caddis fishing through the week. Target riffles flowing into deep runs.

3,500 cfs ↓

South Central Idaho

Silver Creek

Covers Sep 16–23

Silver Creek's cooling water and stable flows set up solid mid-day through afternoon hatches over the next week, with Callibaetis, terrestrials, and October Caddis in the mix.

76 cfs

South Central Idaho

South Fork Boise River

Covers Sep 16–23

Flows have stabilized around 300 cfs, making the South Fork a wade-friendly proposition with excellent Fall Baetis activity and cool water temps of 56°F.

South Central Idaho

Big Wood River

Covers Sep 9–16

The Big Wood runs low and clear heading into mid-September, requiring stealth and first-cast accuracy. Cool mornings trigger Red Quill hatches alongside Baetis, Tricos, and small flies.

1.5 cfs ↓

Salmon Region

Salmon River

Covers Sep 9–16

Valley Creek has cleared, bringing solid walk-and-wade conditions to the Salmon River through mid-September. Nymphing is your best bet with normal flows and prime water temperatures.

4,250 cfs ↑

South Central Idaho

Silver Creek

Covers Sep 9–16

Silver Creek offers low, clear water and a tight late-morning dry fly window during Tricos and Baetis spinner falls, with Callibaetis activity building in the afternoon.

South Central Idaho

South Fork Boise River

Covers Sep 9–16

Wading conditions favor the South Fork through September, with good hatches of Flavs, Pink Alberts, and Baetis as temperatures stay prime.