Mountain Freestone · Mixed · US, US

Upper Truckee River

Upper Truckee River venue image

The Upper Truckee is the biggest tributary feeding Lake Tahoe, and it spends its life pulling snowmelt down out of the mountains toward the south shore.

Tomorrow · About as good as it gets
Pheasant Tail
Forecast · Tomorrow
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
75% projected
Today's fly
Pheasant Tail
Pheasant Tail
Conditions on the water · Tomorrow
Estimate
Level
Dry recently
No gauge reading
Water temp11.0°C
ClarityClear
Weather11°C
WindN 12 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead0.8 mm

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

Water temperature for Brown Trout
Ideal
11°C est.ideal 1016°C
0°14°28°
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
Good — water temperature is right today, though insect activity could be better.
Likely species
Hatch timeline · tomorrowPeak at 12pm

12pm(now) Mahogany Dun

Stage: On emergersApproach: Emerger or dryActivity: 95%
Also:Black Midge33%
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

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Beyond the hatch · worth watchingambient prey(1)

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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
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
Brown Trout fly box
SD
Sex Dungeon
2-6 · Pattern
Proven pattern for this period
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Upper Truckee is the biggest tributary feeding Lake Tahoe, and it spends its life pulling snowmelt down out of the mountains toward the south shore. Up high it runs as honest freestone pocket water; lower down it slows and meanders through meadow, the kind of slow, clear, grassy-banked water that turns confident anglers into careful ones. It holds wild and stocked rainbows and browns, and the character of the fishing changes entirely depending on which reach you stand in. The whole thing is governed by snow — blown out and cold through the spring melt, then dropping into shape through summer as the runoff fades. Get there when the river has cleared and settled, and you have meadow trout sipping in slow glides and pocket-water fish that hit before they think about it. Two rivers, really, wearing the same name.

  • River
  • Mixed
The full read · show the working · for Brown Trout · confidence 90%
How the 79 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity57 × 12%6.8
Conditions total= 79
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.
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