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.
Current conditions, flows, and hatch notes for Idaho rivers: updated as new reports are published.
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Showing 1–20 of 55 reports
Upper Snake / Eastern Idaho
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.
South Central Idaho
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.
Salmon Region
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.
South Central Idaho
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.
South Central Idaho
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.
Upper Snake / Eastern Idaho
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
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.
South Central Idaho
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.
South Central Idaho
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.