Coastal Rain River · Mixed · Northern California, US

Mad River

Mad River venue image
Tomorrow · A proper day on the water
Pheasant Tail
Forecast · Tomorrow
A proper day on the water
A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
75% projected
Today's fly
Pheasant Tail
Pheasant Tail
Conditions on the water · Tomorrow
Live gauge
Level
Steady
1.75 m
Water temp13.9°C
ClarityClear
Weather17°C
WindN 11 km/h
Pressure1015 hPa
Rain · recent0.0 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
Warm — slow
14°C est.ideal 4–13°C
0°14°28°
How to fish it · for Steelhead
When
Winter steelhead when open, green and dropping
Where
A Humboldt steelhead river close to Arcata, heavily shaped by winter rain and by the exact regulation status on the day.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Mayflies
Caddisflies
terrestrials
Hatch timeline · tomorrowPeak at 12pm

12pm(now) — Mahogany Dun

Stage: On emergersApproach: Emerger or dryActivity: 93%
Also:Reed Smut82%
Peak emergence windowDegree-days at peak6 food groups active

Peak activity at 12pm — Mahogany Dun (Mahogany Dun, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 with Pro.

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Evidence
Records-basedModerate confidence

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

Through the year
0–3 scale · September 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
Steelhead fly box
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.
BS
Brett's Klamath Intruder
12–16 · Fly
A dependable searching pattern for these waters.
Permits & access
Permit required — see local rules.
  • CDFW North Coast low-flow rules apply; threshold is 200 cfs at Mad River near Arcata
  • Verify current rules before any hatchery/wild distinction is displayed.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Van Duzen River
43 km
73
Steelhead · Chinook salmon · Coho salmon
Eel River system
44 km
65
Steelhead · Chinook salmon · Coho salmon
South Fork Trinity River
54 km
Rainbow trout · Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
Conservation note

Wild steelhead and listed salmonid recovery context. Separate any hatchery-retention information from wild-fish handling and verify before display.

Why this score · for Steelhead
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5513% weight
  • Pressure757% weight
  • Insect activity5712% weight
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 September → 30 April
Related guides
Euro Nymphingsubsurface methods
Booking & contacts