Stillwater · Mixed · US

South Fork Trinity River

South Fork Trinity River venue image

The South Fork of the Trinity is the wild one — the longest free-flowing river left in California, running undammed out of the Yolla Bolly country through deep forested canyon to meet the main Trinity.

Fair · Rainbow
Parachute Adams · 12-18
A respectable few hours, if you choose your moments
Glassy and bright — hard work without a breeze. Hard work without breeze. Look for the dimples.
45% confidence
limited data
What moved it
  • WindNE 4 km/hCalm
Today's fly
Parachute Adams
Parachute Adams12-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Wind
Calm
NE 4 km/h
N
NE
from the north-east
WaveFlat calm
Water temp
Air temp19°C
CloudClear
Pressure1016 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Rainbow
When
No strong hatch signals at the moment — general searching tactics should work best. Calm conditions may limit drift fishing — consider buzzers or dry fly if fish are rising.
Where
With limited drift, anchor or fish static from sheltered positions. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point. In the calm, a single dry fly or a slowly-fished nymph tends to out-fish an active retrieve.
The plan
Plan A

With limited drift, anchor or fish static from sheltered positions. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point. In the calm, a single dry fly or a slowly-fished nymph tends to out-fish an active retrieve.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Bank

Flat calm suits bank fishing near features — points, weed beds, and inflows where fish patrol.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

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Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Gray DrakeHatch
2
2
CallibaetisHatch
2
3
3
3
2
Hexagenia (Western)Hatch
2
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2

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

Ranked for today
Rainbow fly box
What's coming
Plan ahead
5-day outlook
Condition match
77%
Cloud70%
Wind65%
Temp100%

A good match for South Fork Trinity River — most conditions are close to what it fishes best in.

Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The South Fork of the Trinity is the wild one — the longest free-flowing river left in California, running undammed out of the Yolla Bolly country through deep forested canyon to meet the main Trinity. That wildness is its character and its catch: with no dam to steady the flows, it runs high and cold with the winter rains and snowmelt, then drops and warms hard through the rainless summer. It's a steelhead and salmon river first, with resident rainbows holding in the cooler reaches, and the steelhead fishing follows the wet-season flows that draw fish up from the Trinity. Summer can leave the lower river low and warm enough that the fish need refuge, not anglers. Fish it when the water is up and cool, walk into the canyon for the wild trout, and respect a river that still runs the way rivers are supposed to.

  • River
  • Mixed
Why this score
  • Temperature (moderate) is in the sweet spot for summer fishing.
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