Spring Creek · Volcanic · Northern California

Hat Creek

Slough Creek venue image
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The famous Wild Trout flat below Powerhouse 2 — a spring-fed, glassy meadow stream where California's whole wild-trout management idea got started.

Species

About as good as it gets

Low and clear — careful approach country. Take your time — read the water before you cast.

75% confidence in this read
Water temperature for brown trout
Ideal
16°C est.ideal 1016°C
0°14°28°
Why this score · for brown trout
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Insect activity6512% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
15.6°C
Estimated
Clarity
Clear
Air temp
27°C
Wind
W 19 km/h
Gentle breeze
Pressure
1013 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
0.0 mm
No meaningful rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

How to fish it · for brown trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Brown SedgeHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Blue Winged OliveHatch
2
3
3
3
3
2
Mayfly (Green Drake)Hatch
2
2

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

Gallery · 1
  1. Terrain map of the venue
    Terrain map
Permits & access
Permit required — see local rules.
  • CDFW Wild Trout regulations — verify gear and limit rules.
Directions
About this water

The famous Wild Trout flat below Powerhouse 2 — a spring-fed, glassy meadow stream where California's whole wild-trout management idea got started. Cold, clear water and wild rainbows and browns that have read all the books, so this is hatch-matching with fine tippet and downstream presentations, the kind of fishing that makes you feel either very good or very foolish. In high summer it warms up, so do your fishing in the morning and let the river rest in the heat.

Under the surface

Hat Creek is where California decided wild trout were worth protecting — the section below Hat Creek Powerhouse became the state's first designated Wild Trout water, and it set the template for everything after. It's a spring-fed creek of the volcanic country near Mount Lassen, running clear and cold and even out of the porous lava, the lower 'flat' a smooth, weed-rich spring-creek glide where the wild rainbows and browns sip insects with spring-creek fussiness. The bed is volcanic sand, gravel and rooted weed; the water is glassy and demanding, every drift on display. Above the flat it's quicker, rougher pocket water over basalt. The geology is all Cascade volcanics, and the springs keep it temperate year-round. Wading the flat is a careful, often-resisted business on soft footing — mostly you wade slow, cast long, and accept that the fish saw you first.

Wading: Soft footing, glassy exposure on the flat

  • Volcanic
  • Unconfined
  • Spring creek
  • Pool riffle
Seasons & zones
  • TroutLast Saturday in April → 15 November
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