Updated October 15, 2026

    Warm River

    spring creek in Idaho

    The Warm River is a gem for experienced dry fly anglers, with its gin-clear waters demanding precise presentations. It's a true spring creek experience, less crowded than its famous neighbor.

    Conditions right now

    No USGS gauge is linked to this water yet, so we can't chart flows.

    Weather now
    58°F
    Clear Sky, wind 6 mph SW
    Bite report · week of Oct 4

    Blue-Winged Olive (BWO) hatches are consistent

    1. 01Blue-Winged Olive (BWO) hatches are consistent, especially on overcast afternoons, providing dry fly opportunities for selective fish.
    2. 02Midge emergences remain a reliable food source throughout the day, requiring keen observation for subtle takes.
    3. 03Trout, particularly larger browns and rainbows, are becoming more aggressive, making streamer and larger nymph presentations highly effective.
    4. 04Focus on deeper pools, slow bends, and current seams where fish conserve energy and ambush prey.
    5. 05Wading access around the campground areas offers excellent opportunities to cover productive water.
    6. 06Rainbow Trout, Brown Trout, Brook Trout, and Whitefish are the primary species to target.

    Past reports week by week

    5 weeks

    What to tie on

    Picked from reports, hatches and the season. Tap a fly for the recipe and where else it works.

    dry

    Blue-Winged Olive (BWO) Comparadun

    Baetis (BWO) adult
    #18#20#22#24

    Consistent fall BWO hatches provide reliable dry fly action, especially on overcast days.

    Buy at Amazon
    dry

    Parachute BWO

    #18#20#22

    A staple fall dry fly, effective for imitating adult Blue-Winged Olives during intermittent hatches.

    emerger

    Travis Hi-Vis BWO Para Emerger

    #18#20#22

    Crucial for targeting selective trout feeding on emerging Blue-Winged Olives in the film during fall hatches.

    streamer

    Baby Brown Trout (Streamer)

    Trout fry
    #4#6#8

    In fall, larger brown trout become highly predatory; this streamer is an effective imitation of juvenile trout.

    nymph

    Jujubaetis

    Baetis nymph
    #18#20#22

    An excellent imitation of active Baetis nymphs, a primary food source for trout in fall.

    Buy at Amazon
    nymph

    TH Zebra Midge

    #20#22#24

    Midges are a consistent, year-round food source; this weighted pattern is ideal for getting deep to feeding trout in cooler fall waters.

    nymph

    Tungsten Bead Pat's Rubber Legs

    Stonefly nymph (Plecoptera)
    #4#6#8#10

    A robust, weighted stonefly nymph that effectively imitates a significant food source for larger, aggressive trout in fall.

    Buy at Amazon
    streamer

    Woolly Bugger (Olive)

    #4#6#8

    A versatile streamer that imitates leeches and baitfish, which become increasingly important food sources for aggressive trout as water temperatures cool in the fall.

    Where to fish and who to ask

    TroutHunter · Island ParkHenry's Fork Anglers · Last ChanceThree Rivers Ranch Outfitters · Ashton, Driggs, Island Park, BoiseMadison River Outfitters · West Yellowstone1Above Robinson Creek Confluence2Ashton-Flagg Ranch Road Bridge Access3Warm River Campground Area
    AccessFly shopGuide trips
    1

    Above Robinson Creek Confluence

    More remote sections upstream from the confluence with Robinson Creek, known for larger, wilder trout.

    44.155°N 111.345°WDirections
    2

    Ashton-Flagg Ranch Road Bridge Access

    Offers convenient roadside access to different parts of the Warm River, popular for targeting rising trout.

    44.137°N 111.334°WDirections
    3

    Warm River Campground Area

    Provides direct access to productive sections of the spring creek, ideal for wading and exploring.

    44.120°N 111.332°WUSGS 13048500Directions

    Fly shops within 40 miles

    14mi

    TroutHunter

    Island Park, IDGuide trips
    15mi

    Henry's Fork Anglers

    Last Chance, IDGuide trips
    18mi

    Three Rivers Ranch Outfitters

    Ashton, Driggs, Island Park, Boise, IDGuide trips
    38mi

    Madison River Outfitters

    West Yellowstone, MTGuide trips

    Get Warm River reports by email

    Save this water and we'll email you a weekly summary of conditions, hatches and what's working.

    Idaho season by season

    What changes on the water through the year, with the flies for each season.

    Read before you go

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    Quick answers

    Common questions about Warm River.

    What flies work best on Warm River?

    Our top scored fly patterns for Warm River right now are Blue-Winged Olive (BWO) Comparadun (80% confidence), March Brown (80% confidence), Stonefly Nymph (Kaufmann's Stone) (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.

    What fish species are in Warm River?

    Warm River holds Whitefish. See the species links on this page for fly recommendations and seasonal behavior for each.

    What are current flow conditions on Warm River?

    Live USGS streamflow readings for Warm River are charted in the sidebar of this page and updated automatically from the nearest gauge.

    Is Warm River fishing well right now?

    We publish a fresh bite report for Warm River each week based on recent on-the-water intel. The current report — with conditions, hatches, and what's producing — is on this page.