Updated October 15, 2026

    West Fork San Gabriel River

    river in California

    This fork of the San Gabriel River provides a unique opportunity for urban anglers to find solitude and wild trout. It's a small, intimate stream that rewards careful wading and precise casts with light tackle. Fly fishing is catch-and-release, often with barbless hooks.

    Bite report · week of Oct 4

    What's working on West Fork San Gabriel River

    Tactical tipEmploy stealth and precise presentations with longer leaders and finer tippets.
    1. 01Clear skies and mild temperatures create ideal fall conditions.
    2. 02Primary hatches include Blue-Winged Olives and October Caddis, with consistent midge activity.
    3. 03Recommended flies: Blue-Winged Olive Comparadun, Travis Hi-Vis BWO Para Emerger, October Caddis (Dry), Zebra Midge, Midge Larva, Olive Woolly Bugger, Schroeder’s Parachute Hopper.
    4. 04Focus on deeper pools, shaded runs, and areas with structure like undercut banks.

    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 Comparadun

    #18#20#22

    Matches the anticipated fall Blue-Winged Olive hatches, appealing to selective trout feeding on adults on the surface.

    streamer

    Woolly Bugger (Olive)

    #4#6#8

    This versatile streamer imitates leeches and baitfish, provoking aggressive strikes from larger, predatory trout in the West Fork San Gabriel River as they become more active in cooler fall water.

    emerger

    Travis Hi-Vis BWO Para Emerger

    #18#20#22

    Crucial for targeting trout keying into vulnerable BWO emergers trapped in the surface film during fall hatches.

    dry

    October Caddis (Dry)

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

    Fall is known for the robust October Caddis hatch, making this a prime pattern for enticing larger trout to the surface in the late afternoon.

    Buy at Amazon
    nymph

    Midge Larva

    Midge larva (Chironomidae)
    #20#22#24#26

    Midges are a consistent, year-round food source, becoming particularly important as water temperatures drop in fall, appealing to subsurface feeding trout.

    Buy at Amazon
    nymph

    Zebra Midge

    Midge pupa (Chironomidae)
    #18#20#22#24

    A highly effective subsurface pattern for imitating abundant midge pupae, which are a staple diet for trout in the cooler fall conditions.

    Buy at Amazon
    dry

    Schroeder Rouse’s J-Dub Sow Bug

    #14#16

    On warmer fall days, terrestrials like grasshoppers can still be dislodged from streamside vegetation, providing a substantial meal for opportunistic trout.

    nymph

    Micro Egg

    Fish Egg
    #14#16#18

    Egg patterns are effective in the fall, mimicking eggs from spawning fish, which can be a calorie-rich food source for trout.

    Buy at Amazon

    Where to fish and who to ask

    His and Her Fly Fishing Shop · Southern CaliforniaFisherman's Spot · Los Angeles1Bridge to Nowhere Trailhead2Cogswell Dam (below)3San Gabriel Canyon Road (various turnouts)
    AccessFly shopGuide trips
    1

    Bridge to Nowhere Trailhead

    Provides access to a popular and scenic stretch of river.

    34.255°N 117.970°WDirections
    2

    Cogswell Dam (below)

    The tailwater section can hold good fish, requiring some hiking.

    34.265°N 118.050°WDirections
    3

    San Gabriel Canyon Road (various turnouts)

    Numerous spots to pull off and access the river along the road.

    34.240°N 118.020°WDirections

    Fly shops within 40 miles

    20mi

    His and Her Fly Fishing Shop

    Southern California, CAGuide trips
    26mi

    Fisherman's Spot

    Los Angeles, CA

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    California season by season

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

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    Quick answers

    Common questions about West Fork San Gabriel River.

    What flies work best on West Fork San Gabriel River?

    Our top scored fly patterns for West Fork San Gabriel River right now are Blue-Winged Olive Comparadun (80% confidence), Woolly Bugger (Olive) (80% confidence), Travis Hi-Vis BWO Para Emerger (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.

    What fish species are in West Fork San Gabriel River?

    West Fork San Gabriel River holds Steelhead. See the species links on this page for fly recommendations and seasonal behavior for each.

    Is West Fork San Gabriel River fishing well right now?

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