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

  1. Home
  2. Fish
  3. Salmon & steelhead
  4. Chinook Salmon

Updated September 26, 2026

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Chinook Salmon: fish species profile, Adult
Chinook Salmon: fish species profile, juvenile
Adult

Fish › Salmon & steelhead

Salmon & steelheadSalmonidaeG5 (Secure) · ESA: Not listed · Idaho: SNRAnadromous

Chinook Salmon

Oncorhynchus tshawytscha

Idaho Chinook are big, hard-fighting ocean-run salmon that power upstream into Idaho rivers each year.

Overview

Size range

28–59 in

Size range

28–59 in

Size range

Typical adult length in the waters we cover.

Water temperature

Coldwater

Water temperature

Coldwater

Water temperature

Preferred thermal regime for this species.

Active season

Seasonal runs

Active season

Seasonal runs

Active season

When anglers most often encounter this species.

Origin

Native

Origin

Native

Origin

Stocking and native history where this species is found.

Habitat

Anadromous & Migratory, Rivers & Large Rivers

Habitat

Anadromous & Migratory, Rivers & Large Rivers

Habitat

Primary water types where this species is found.

About Chinook Salmon

Chinook salmon are anadromous salmonids that grow in the ocean, then return to Idaho freshwater to spawn. Idaho Fish and Game manages spring, summer, and fall runs, with seasons set annually based on returns.

Also known as: king salmon, kings

Chinook Salmon Silhouette

  • Chinook Salmon species silhouette
    Primary

Behavior

spawning
Adults return from the sea to natal streams to spawn in freshwater.
feeding style
Most feeding happens in the ocean, where Chinook grow by eating plankton and baitfish before returning upriver.
seasonal notes
In Idaho, anglers target returning spring, summer, and fall Chinook; IDFG notes fishing opportunities can occur from May through October, with spring/summer seasons generally April through August and fall seasons August through October.

Habitat

water types
large rivers, coldwater, anadromous runs
preferred holds
During the Idaho run, Chinook travel and rest in big river current seams, deeper runs, pools, and migration corridors.

Where Found

Blue Ribbon waters

  • Chinook salmon where open

    Clearwater River

    Season open per regulation

  • Chinook salmon / steelhead context by regulation

    Middle Fork Salmon River

    Anadromous context, check regulations

  • Chinook salmon where open

    Salmon River

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Bayhorse Recreation Site to Tappan

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Cache Bar to Carey Creek

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Campbell Flat to Pine Bar

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Carey Creek to Riggins

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Colston Creek to Shoup Bridge Campground

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Corn Creek Campground to Spring Bar

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Deadwater Spring to Corn Creek Campground

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Hammer Creek to Mouth / terminus

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Headwaters to Sawtooth Kids Pond

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Lucile Recreation Site to Campbell Flat

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Maynard Hole to Hammer Creek

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Riggins to Maynard Hole

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Sawtooth Kids Pond to Sunbeam

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Shoup Bridge Campground to Tower Rock Recreation Site

    Season open per regulation

  • Chinook salmon where open

    Salmon River, South Butte to Bayhorse Recreation Site

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Spring Bar to Lucile Recreation Site

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Sunbeam to South Butte

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Tappan to Colston Creek

    Season open per regulation

  • Chinook salmon where open

    Salmon River, Tower Rock Recreation Site to Cache Bar

    Season open per regulation

Recommended waters

  • Chinook salmon where open

    Little Salmon River

    Season open per regulation

  • Chinook salmon

    Snake River, Hells Canyon Dam to Clearwater Confluence (Lewiston)

Chinook Salmon on the podcast

  • Captain Bryce Tedford - Stripers, Smallmouth, Largemouth, and moving to California

    Episode 174 · Jan 24, 2022

    Captain Bryce Tedford - Stripers, Smallmouth, Largemouth, and moving to California

    Listen on the Barbless Podcast

  • Update on Chinook Reintroduction to The McCloud River - Jon Ambrose - NOAA

    Episode 108 · Sep 18, 2019

    Update on Chinook Reintroduction to The McCloud River - Jon Ambrose - NOAA

    Listen on the Barbless Podcast

  • Reintroduction of Winter Run Chinook Into The McCloud River - Jon Ambrose - NOAA / NMFS

    Episode 89 · May 21, 2019

    Reintroduction of Winter Run Chinook Into The McCloud River - Jon Ambrose - NOAA / NMFS

    Listen on the Barbless Podcast

Diet

Chinook do most of their feeding in the ocean, where they grow on plankton and baitfish before returning to spawn.

  • BaitfishInferred
  • CrayfishInferred
  • LeechInferred
  • SculpinInferred

Angler Tactics

tactics
Focus on major river migration water and travel lanes, covering deeper runs and soft edges where moving fish pause. Time trips to run updates, and always match current area-specific Chinook seasons and rules.
effective methods
drifting bait, back-trolling plugs, bobber fishing, casting spoons

Regulations

Chinook seasons and limits are set annually and can change quickly with run strength and harvest goals; always check current IDFG Chinook seasons and rules for the specific river and run before fishing.

Regulations vary by water. Check current Idaho Fish and Game rules before fishing.

Conservation

Status: Native to Idaho (SNR)

G5 (Secure) · ESA: Not listed · Idaho: SNR

Runs between freshwater and the ocean.

Chinook Salmon Photos

Adult
juvenile

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On this page

OverviewSilhouetteBehaviorHabitatWhere FoundFrom the PodcastDietAngler TacticsRegulationsConservationPhotos

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IDFG Planner

On this profile

  • 25 waters
  • 4 food sources
  • 2 photos

Chinook salmon where open

South Fork Clearwater River

Season open per regulation