Spate · Granite · Valais, CH

Rhône Headwaters

Rhône Headwaters terrain map
Good · Brown Trout
Pheasant Tail Nymph · 14-18
Goodlive now
A proper day on the water
River high but settled. Match the colour and fish the seams.
75% confidence
What moved it
  • Level1756.21 mDropping in the last 6h
  • Water temp8.9°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Live gauge
Level
Steady
1756.21 m
Dropping in the last 6h
Water temp8.9°C
ClarityClear
Weather8°C
WindN 5 km/h
Pressure1021 hPa
Rain · recent10.9 mm
Rain · ahead0.4 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
Cool — slow
9°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
Good — water clarity is right today, though insect activity could be better.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 7 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(1)

Hatch predictions

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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
1
Autumn DunHatch
2
3
2
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • Têtes de bassin alpines du Valais
  • Patente (Valais) + permis de pêche requis
  • Accès isolé.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Lake Brienz
37 km
Brown trout · Lake trout · Char
Valais Alpine Streams
40 km
10
Brown trout
Lake Thun
42 km
Brown trout · Lake trout · Char
The full read · show the working · for Brown Trout · confidence 75%
How the 75 is built — score × weight = contribution
Temperature80 × 28%22.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity46 × 12%5.5
Conditions total= 75
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 June → 30 September
Related guides
Alpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts