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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. Snake River, Idaho Falls to American Falls Reservoir

Updated September 19, 2026

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Idaho Rivers › Eastern Idaho

Snake River, Idaho Falls to American Falls Reservoir

Premier Idaho trout water with diverse seasonal hatches.

Recommended water80 mi · 129 kmFreestone RiverTrout fishery
View on MapGet Directions
Rainbow troutBrown troutYellowstone cutthroat troutMountain whitefish

A Legendary Idaho Fishery

Snake mainstem below the Osgood Diversion reach through Shelley, Firth, and Blackfoot to the upstream end of American Falls Reservoir. Mixed cold/cool-water character; trout fade as the reach approaches the reservoir.

Sources: idfg.idaho.gov

Best Season

May – October

River Type

Freestone

Skill Level

Beginner – Intermediate

Best Techniques

Dry Flies, Nymphing

Access

Moderate

Gauge stations along the Snake River, Idaho Falls to American Falls Reservoir

Around Blackfoot, part 1

Main stretch

Around Blackfoot, part 2

Around Shelley

More stations on the river

Access

Fish in Snake River, Idaho Falls to American Falls Reservoir

Explore fish species associated with the Snake River, Idaho Falls to American Falls Reservoir. Each profile includes identification tips, habitat notes, and practical fishing guidance for Idaho anglers.

Hatches on Snake River, Idaho Falls to American Falls Reservoir

Review seasonal insect hatches on the Snake River, Idaho Falls to American Falls Reservoir, including timing windows and fly pattern suggestions for Idaho fly fishing.

Regulations

Check current seasons, limits, and special rules for Snake River, Idaho Falls to American Falls Reservoir before you go. Regulations change, so always verify with IDFG.

View IDFG Regulations

Guides & Outfitters

Recent conditions on Snake River, Idaho Falls to American Falls Reservoir

The latest fishing conditions and hatch notes for Snake River, Idaho Falls to American Falls Reservoir. Older reports live in the Snake River, Idaho Falls to American Falls Reservoir report archive.

Videos on Snake River, Idaho Falls to American Falls Reservoir

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

Photos

Nearby Communities

  • Riverside1.6 mi
  • Clarkson2.7 mi
  • Aiken2.8 mi
  • Moreland3.2 mi
  • Collins3.5 mi
  • Thomas3.7 mi

On this page

Overview
Flows
Live camerasAccessFishHatchesRegulationsGuides & OutfittersVideosPhotosNearby CommunitiesReaches

River Tools

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Map data © Mapbox © OpenStreetMap

Fish in Snake River, Idaho Falls to American Falls Reservoir

The Snake River, Idaho Falls to American Falls Reservoir 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.

  • 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.
  • Yellowstone Cutthroat Trout
    Yellowstone Cutthroat TroutA native dry-fly favorite of eastern Idaho, Yellowstone cutthroat shine in clear, cold rivers.

Other reaches in the Snake River

8 reaches
  • Henrys Fork of the Snake River

    Trout fishery82 mi · 132 km
  • South Fork Snake River

    Trout fishery107 mi · 171 km
  • Snake River, American Falls Reservoir to Gem Lake Dam

    Mixed warm-water59 mi · 95 km
  • Snake River, Hells Canyon Dam to Clearwater Confluence (Lewiston)

    Steelhead & sturgeon107 mi · 172 km
  • Snake River, Lower Salmon Falls Dam to Bliss Dam (Hagerman / Thousand Springs)

    Trout fishery22 mi · 35 km
  • Snake River, Milner Dam to Hansen Bridge (Murtaugh Canyon)

    Trout fishery23 mi · 38 km
  • Snake River, Osgood Diversion Dam to Henrys Fork

    Trout fishery47 mi · 76 km
  • Snake River, Swan Falls Dam to Brownlee Reservoir

    Bass & sturgeon45 mi · 73 km

Videos on Snake River, Idaho Falls to American Falls Reservoir

These 1 YouTube videos have been hand-curated by our team because we feel they best represent the Snake River, Idaho Falls to American Falls Reservoir fishery. Each pick highlights river character, access, and techniques worth knowing before you fish this Idaho water.

Iconic Rises - 2025 Fly Fishing Film Tour Official Selection

Frogwater Productions

Nov 3, 2025

Guides & Outfitters

Fishing guides, outfitters, shuttles, and shops that operate on the Snake River, Idaho Falls to American Falls Reservoir.

Guides & Outfitters

View all
Jones Sport Fishing LLC on the water

Jones Sport Fishing LLC · Outfitter · Deary, ID

Guided fishing trips on Idaho's Clearwater and Snake Rivers, American Falls Reservoir, CJ Strike Reservoir, Salmon Falls Creek Reservoir, and the Columbia River.

Spring and SummerN/AAll skill levels welcome
Clearwater RiverSnake River, Hells Canyon…Snake River, Lower Salmon…+1

Hatches on Snake River, Idaho Falls to American Falls Reservoir

The Snake River, Idaho Falls to American Falls Reservoir has 9 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
Baitfish
Leech
Midge
Sculpin
Blue-winged Olive
Crayfish
Caddis
Pale Morning Dun
Grasshopper
PeakActiveSelect a dot for timing and patterns, or a month to focus it.

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