Freestone · Granite · Northern California

Rubicon River

Rubicon River venue image

A rugged Sierra Wild Trout river with freestone character, high-country access questions and a short practical season once snow and runoff settle.

Prime · Rainbow Trout
Parachute Adams · 12-18
Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
90% confidence
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp16.5°C
  • ClarityClear
Today's fly
Parachute Adams
Parachute Adams12-18
High-confidence seasonal pick
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp16.5°C
ClarityClear
Weather17°C
WindE 5 km/h
Pressure1017 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

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

Water temperature for Rainbow Trout
Ideal
17°C est.ideal 10–18°C
0°14°28°
How to fish it · for Rainbow 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 insect activity could be better.
Hatch timeline · todayPeak at 5pm

Hatch predictions

Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.

Start free trial

14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

Start free trial

14-day free trial. Cancel anytime.

Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
SalmonflyHatch
2
3
2
Golden StoneHatch
2
3
2
SkwalaHatch
2
3
2
Yellow SallyHatch
1
2
1

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

Ranked for today
Rainbow Trout fly box
Permits & access
Permit required — see local rules.
  • CDFW Wild Trout designation; verify boundaries, access and current regulations.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
North Fork American River
26 km
2
Rainbow trout · Brown trout
Middle Fork American River
34 km
Rainbow trout
South Fork American River
36 km
2
Rainbow trout
Truckee River
50 km
Brown trout · Rainbow trout
Martis Lake
54 km
Rainbow trout · Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

A rugged Sierra Wild Trout river with freestone character, high-country access questions and a short practical season once snow and runoff settle. It carries official designated-water status, but don't mistake that for an easy roadside fishery — high-country access and a short season are the reality.

  • Granite
Water quality · US Clean Water Act
  • Aquatic life: Not assessed
What this classification means

EPA ATTAINS assessment unit 'Rubicon River from Oxbow Reservoir to Hell Hole Reservoir' (CAR5144303020200428048258), 2024 Integrated Report. Aquatic Life use: Insufficient Information. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · CAR5144303020200428048258

The full read · show the working · for Rainbow Trout · confidence 90%
How the 83 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time75 × 13%9.8
Pressure75 × 7%5.3
Insect activity55 × 12%6.6
Conditions total= 83
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout Last Saturday in April → 15 November
Related guides
Euro Nymphingsubsurface methods
Booking & contacts