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

  1. Idaho
  2. Rivers & Lakes
  3. Warm River

Updated September 2, 2026

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Idaho Rivers › Eastern Idaho

Warm River

Premier Idaho trout water with diverse seasonal hatches.

Recommended water30 mi · 49 kmFreestone RiverTrout fishery
View on MapGet Directions
Brook troutBrown troutRainbow troutMountain whitefish

A Legendary Idaho Fishery

Spring creek/freestone blend near Henrys Fork system.

Sources: idfg.idaho.gov
Warm River on the water

Best Season

May – October

River Type

Freestone

Skill Level

Beginner – Intermediate

Best Techniques

Dry Flies, Nymphing

Access

Moderate

Gauge stations along the Warm River

No gauges
No USGS gauges on this stretch.

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Fish in Warm River

Explore fish species associated with the Warm River. Each profile includes identification tips, habitat notes, and practical fishing guidance for Idaho anglers.

Hatches on Warm River

Review seasonal insect hatches on the Warm River, including timing windows and fly pattern suggestions for Idaho fly fishing.

Regulations

Check current seasons, limits, and special rules for Warm River before you go. Regulations change, so always verify with IDFG.

View IDFG Regulations

Guides & Outfitters

Recent conditions on Warm River

The latest fishing conditions and hatch notes for Warm River. Older reports live in the Warm River report archive.

Videos on Warm River

These YouTube videos have been hand-curated by our team because we feel they best represent the Warm River fishery. Watch for river character, access context, and techniques that translate to your next Idaho trip.

Photos

Nearby Communities

  • Gerrit2.6 mi
  • Warm River9 mi
  • Island Park13.1 mi
  • Marysville13.5 mi
  • Ashton14.2 mi
  • Squirrel14.9 mi

On this page

Overview
Flows
Live camerasAccessFishHatchesRegulationsGuides & OutfittersVideosPhotosNearby Communities

River Tools

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Map data © Mapbox © OpenStreetMap

Fish in Warm River

The Warm River supports 4 fish species in our Idaho fishing catalog. Browse each profile for identification tips, seasonal patterns, and how these species are managed on this water.

  • Brook Trout
    Brook TroutA colorful introduced char of Idaho’s cold streams, small rivers, lakes, and reservoirs.
  • Brown Trout
    Brown TroutWary, hard-fighting trout that reward careful presentations and can grow into true fish-eaters.
  • Mountain Whitefish
    Mountain WhitefishA native coldwater scrapper that shines on nymphs when trout fishing slows down.
  • Rainbow Trout
    Rainbow TroutIdaho’s most widespread trout, quick to rise and willing to chase nymphs and small streamers.

Hatches on Warm River

The Warm River has 10 documented insect hatches across spring, summer, fall, and winter. Review seasonal timing and recommended fly patterns to plan productive days on this Idaho water.

Spring
Summer
Fall
Winter
Midge
Sculpin
Blue-winged Olive
Caddis
Green Drake
Pale Morning Dun
Yellow Sally
Ant
Beetle
Grasshopper
PeakActiveSelect a dot for timing and patterns, or a month to focus it.

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Create custom graphics of this hatch chart to share on your social profiles as posts or stories.

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Videos on Warm River

These YouTube videos have been hand-curated by our team because we feel they best represent the Warm River fishery. Watch for river character, access context, and techniques that translate to your next Idaho trip.

No videos
No related videos yet.

Guides & Outfitters

Fishing guides, outfitters, shuttles, and shops that operate on the Warm River.

No verified providers for this river yet. Browse the full directory.

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