Coastal Rain River · Granite · British Columbia, CA

Chehalis River

Wide wetland landscape of the Chehalis Flats near Harrison Mills, British Columbia, with braided water channels through marsh grass and mist-shrouded mountains in the background
Today · Slow going — pick your moments
Sculpin Streamer
Forecast · Today
Slow going — pick your moments
Slow going — pick your moments and do not force it.
45% projected
Today's fly
Sculpin Streamer
Sculpin Streamer
Conditions on the water · Today
Estimate
Level
Light rain recently
No gauge reading
Water temp8.6°C
ClarityVery coloured
Weather10°C
WindN 6 km/h
Pressure1017 hPa
Rain · recent5.5 mm
Rain · ahead1.1 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for Steelhead
Ideal
9°C est.ideal 4–13°C
0°14°28°
How to fish it · for Steelhead
When
Winter steelhead Dec–April; cutthroat and salmon in season.
Where
The Chehalis in the eastern Fraser Valley is an accessible, popular Lower Mainland river with a hatchery-supported winter steelhead run, cutthroat and salmon.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Mayflies
Chironomids
Gammarids
Hatch timeline · todayPeak at 11h

12h(now) — Western Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 25%
Also:Black Midge24%
Peak emergence window4 food groups active

Peak activity at 11h — Western Blue-Winged Olive (Western Blue-Winged Olive, Peak emergence window)

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
2
2
1
Brown DunHatch
2
3
3
3
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Fly box · Steelhead
MT
Marabou tube
8–10 · Salmon fly
Swing it through the holding lie at a steady pace.
FM
Fry/minnow pattern
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
Permits & access
Permit required — see local rules.
  • Retain marked hatchery steelhead where permitted; release wild; gear restrictions
  • Verify current BC regs (Region 2).
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Harrison River
8.0 km
Cutthroat trout · Bull trout · Coho salmon
Vedder / Chilliwack River
23 km
81
Steelhead · Rainbow trout · Coho salmon
Gallery · 2
  1. Wide wetland landscape of the Chehalis Flats near Harrison Mills, British Columbia, with braided water channels through marsh grass and mist-shrouded mountains in the background
    Chehalis Flats near Harrison Mills, where the Chehalis River meets the Fraser Valley
  2. Terrain map of the venue
    Terrain map
Conservation note

Mixed hatchery and wild winter steelhead (retain marked hatchery only where permitted; release wild); cutthroat and salmon present. Clean-Drain-Dry.

Why this score · for Steelhead
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time4513% weight
  • Pressure757% weight
  • Insect activity6312% weight
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 January → 31 December
Related guides
Euro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts