Freestone · Granite · Graubünden / Engadin, CH

Inn (Engadin)

Gravel-bar reach of the Inn river with Alpine peaks in the background, Engadin

The Inn in the Engadin valley is one of Switzerland's finest trout rivers—clear, cold water with brown trout and grayling responding to Euro nymphing and dry-dropper work.

Prime · Brown Trout
Elk Hair Caddis · 12-16
Primelive now
About as good as it gets
River high but settled. Coloured water — fish bigger and deeper, confident takes down the seams.
90% confidence
What moved it
  • Level1041.07 mLast reading 8h ago
  • Water temp16.4°C
  • ClarityClear
Today's fly
Elk Hair Caddis
Elk Hair Caddis12-16
Upstream dry
Conditions on the water
Live gauge
Level
Steady
1041.07 m
Last reading 8h ago
Water temp16.4°C
ClarityClear
Weather17°C
WindSE 6 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead5.3 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
16°C est.ideal 10–16°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
Excellent — water clarity is right today, though insect activity could be better.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1

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

Ranked for today
Brown Trout fly box

A compact but high-quality Swiss box covering alpine streams, mountain lakes, and Jura salmonid rivers such as the Doubs.

SS
Small Streamer
6-10 · Pattern
Swing
Permits & access
Permit required — see local rules.
  • Graubünden Canton
  • Cantonal patent and the relevant local permission required
  • Check current Engadin rules rather than assuming one generic Graubünden river regime.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Engadine Mountain Lakes
15 km
Brown trout · Char
Adda (Valtellina)
38 km
Brown trout · Marble trout · Grayling
Oglio (Val Camonica)
51 km
Brown trout · Marble trout · Grayling
Gallery · 2
  1. Gravel-bar reach of the Inn river with Alpine peaks in the background, Engadin
    The Inn river in the Engadin, Switzerland
  2. Terrain map of the venue
    Terrain map
About this water

The Inn in the Engadin valley is one of Switzerland's finest trout rivers—clear, cold water with brown trout and grayling responding to Euro nymphing and dry-dropper work. The upper Engadin around St. Moritz and Zuoz is premium, the sort of alpine water that teaches you precision.

  • Granite
The full read · show the working · for Brown Trout · confidence 90%
How the 81 is built — score × weight = contribution
Temperature90 × 28%25.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity59 × 12%7.1
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 May → 15 September
Related guides
Grayling Playbookgrayling tacticsAlpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts