Coastal Rain River · Mixed · Northern California, US

Mattole River

Photo of Mattole River
Tomorrow · Slow going — pick your moments
Sculpin Streamer
Forecast · Tomorrow
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 · Tomorrow
Live gauge
Level
Rising
3.38 m
Lifting fast
Water temp11.2°C
ClarityVery coloured
Weather11°C
WindN 31 km/h
Pressure1020 hPa
Rain · recent0.3 mm
Rain · ahead0.0 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Steelhead
Ideal
11°C est.ideal 4–13°C
0°14°28°
How to fish it · for Steelhead
When
Winter steelhead when open and dropping after rain
Where
Remote Lost Coast steelhead and salmon recovery water.
Why this works
Excellent — water temperature is working for you, but time of day is the limiting factor today.
Likely species
Chironomids
Gammarids
Hatch timeline · tomorrowPeak at 21h

12h(now) — Mahogany Dun

Stage: On emergersApproach: Emerger or dryActivity: 45%
Peak emergence windowWeather boost5 food groups active

Peak activity at 21h — Brown Dun (Brown Dun, Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 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
2
2
2
1
1
2
2
2
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
SS
Stu's Mini-IntruderTop
12–16 · Fly
A dependable searching pattern for these waters.
HB
Hoh Bo Spey
12–16 · Fly
A dependable searching pattern for these waters.
SC
Sculpzilla
12–16 · Fly
A dependable searching pattern for these waters.
Permits & access
Permit required — see local rules.
  • CDFW low-flow threshold is 320 cfs at Mattole River near Petrolia; check current status before travelling.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Eel River system
24 km
86
Steelhead · Chinook salmon · Coho salmon
Van Duzen River
36 km
85
Steelhead · Chinook salmon · Coho salmon
Gallery · 2
  1. Photo of Mattole River
    Mattole River
  2. Terrain map of the venue
    Terrain map
Conservation note

Wild steelhead, Chinook and coho recovery context. Conservation-first; no listed-salmonid catch scores.

Why this score · for Steelhead
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time4013% weight
  • Pressure757% weight
  • Insect activity6912% weight
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 September → 30 April
Related guides
Euro Nymphingsubsurface methods
Booking & contacts