Tailwater · Mixed · Northern California, US

Lower Yuba River

The Lower Yuba River corridor near Daguerre Point Dam, California.
Tomorrow · A proper day on the water
Czech Nymph
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
Czech Nymph
Czech Nymph
Conditions on the water · Tomorrow
Live gauge
Level
Steady
18.64 m
Water temp13.7°C
ClarityClear
Weather19°C
WindN 21 km/h
Pressure1013 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 Rainbow Trout
Ideal
14°C est.ideal 10–18°C
0°14°28°

We have not characterised this dam's release, so this is a general cold-release figure and could be several degrees out in either direction. Treat it as a hint, not a reading, and check locally before you fish.

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 time of day could be better.
Likely species
Mayflies
Chironomids
Gammarids
Hatch timeline · tomorrowPeak at 11h

12h(now) — Western Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 52%
Peak emergence window4 food groups active

Peak activity at 11h — Western Blue-Winged Olive (Western Blue-Winged Olive, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

Start free trial

14-day free trial. Cancel anytime.

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
1
2
2
2
2
2
2
2
2
2
2
1
Western Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Pale Morning DunHatch
2
3
3
2
TricoHatch
2
3
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
Fly box · Rainbow Trout
Permits & access
Permit required — see local rules.
  • Open all year; barbless, with low-flow / steelhead closures — check CDFW
  • Holds ESA-listed wild steelhead: handle with care.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
North Fork American River
37 km
82
Rainbow trout · Brown trout
Feather River
40 km
Steelhead · Chinook salmon
Middle Fork American River
44 km
82
Rainbow trout
North Fork Yuba River
47 km
80
Rainbow trout · Brown trout
South Fork American River
57 km
82
Rainbow trout
Gallery · 2
  1. The Lower Yuba River corridor near Daguerre Point Dam, California.
    Lower Yuba near Daguerre Point
  2. Terrain map of the venue
    Terrain map
Conservation note

Holds ESA-listed Central Valley steelhead. These are wild fish carrying a hard story, so we name their presence and leave it at that — no catch score, no go-get-'em. Handle any you meet with real care.

Water quality · US Clean Water Act
  • Aquatic life: Impaired
What this classification means

EPA ATTAINS assessment unit 'Yuba River (Englebright Lake Dam to Feather River, Lower)' (CAR5153000020020702135622), 2024 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Metals Other Than Mercury. 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) · CAR5153000020020702135622

The full read · show the working · for Rainbow Trout · confidence 75%
How the 81 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time50 × 13%6.5
Pressure75 × 7%5.3
Insect activity71 × 12%8.5
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 January → 31 December
Related guides
Euro Nymphingsubsurface methods
Booking & contacts