Updated October 15, 2026

    Trinity River

    river in California

    The Trinity is California's premier steelhead river, offering both high numbers of fish and beautiful mountain scenery.

    River flow last 30 days

    04008001,2001,600Sep 16Sep 22Sep 27507 cfs
    Flow now
    502cfs
    Inside the typical range (485–508 cfs)
    Last 7 days
    Steady
    507 to 1,180 cfs
    Bite report · week of Oct 4

    Trinity River flowing at 485 cfs under overcast skies

    1. 01Trinity River flowing at 485 cfs under overcast skies.
    2. 02Steelhead are migrating, and egg patterns are critical with salmon spawning.
    3. 03Active Baetis nymphs and larger stonefly nymphs are present subsurface.
    4. 04Focus on deeper runs, heads/tails of pools, and current seams near structure.
    5. 05Pay close attention to subtle takes when nymphing and use slow retrieves for streamers.

    Past reports week by week

    9 weeks

    What to tie on

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

    nymph

    Steelhead Nymph (Kaufmann's Stone)

    Stonefly nymph
    #4#6#8

    Large stonefly nymphs are a consistent, high-calorie food source for steelhead in freestone rivers during the fall.

    Buy at Amazon
    streamer

    Egg Sucking Leech

    Leech/egg combination
    #2#4#6

    A highly effective pattern mimicking both leeches and eggs, crucial for fall steelhead in systems with spawning salmon.

    Buy at Amazon
    streamer

    Intruder (Steelhead)

    General attractor (steelhead)
    #1/0#2/0#3/0

    Designed specifically for steelhead, these larger attractor patterns are excellent year-round, including the fall season.

    Buy at Amazon
    streamer

    Hot Pink Bunny Leech

    #14#16

    Pink is a highly effective attractor color for salmonids, imitating leeches and baitfish in cooler fall water.

    egg

    Glo Bug

    Salmon/trout egg
    #8#10#12#14

    Salmon and trout eggs are a primary food source for steelhead in the fall, making this a critical pattern.

    Buy at Amazon
    streamer

    Comet

    General attractor (steelhead)
    #4#6#8

    A classic attractor pattern for steelhead during their fall migration, effective in various colors.

    Buy at Amazon
    dry

    October Caddis (Dry)

    October Caddis (Dicosmoecus) adult
    #6#8#10

    The October Caddis hatch is the largest caddis emergence of the year in many western rivers during the fall, offering dry fly opportunities.

    Buy at Amazon
    nymph

    Baetis Nymph

    Baetis (BWO) Nymph
    #16#18#20#22

    Baetis (Blue-Winged Olive) nymphs are active subsurface in the fall, providing a consistent food source for steelhead.

    Where to fish and who to ask

    Trinity Fly Shop · LewistonThe Fly Shop · Redding1Douglas City Pipe-Bridge2Junction City Access3Lewiston Dam Access
    AccessFly shopGuide trips
    1

    Douglas City Pipe-Bridge

    A popular river access and campground that serves as a midpoint for many drift boat floats and offers great bank access.

    40.710°N 122.940°WUSGS 11525854Directions
    2

    Junction City Access

    A lower river access point famous for its long, productive runs that hold steelhead as they migrate upriver.

    40.665°N 123.080°WUSGS 11526250Directions
    3

    Lewiston Dam Access

    The primary release point below the dam, offering excellent wading and drift boat launches for classic tailwater fishing.

    40.725°N 122.805°WUSGS 11525500Directions

    Fly shops within 40 miles

    2mi

    Trinity Fly Shop

    Lewiston, CAGuide trips
    27mi

    The Fly Shop

    Redding, CAGuide trips

    Get Trinity River reports by email

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

    California 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 Trinity River.

    What flies work best on Trinity River?

    Our top scored fly patterns for Trinity River right now are Steelhead Nymph (Kaufmann's Stone) (80% confidence), Soft Hackle Wet (Partridge & Orange) (80% confidence), Green Butt Skunk (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.

    What fish species are in Trinity River?

    Trinity River holds Steelhead, Steelhead (Winter-run). See the species links on this page for fly recommendations and seasonal behavior for each.

    What are current flow conditions on Trinity River?

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

    Is Trinity River fishing well right now?

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