Freestone · Granite · Catalonia / Occitanie (Val d'Aran), ES

Garona / Garonne (headwaters)

Garona / Garonne (headwaters) — File:ES5130034-Rio Garona-Arties 2.jpg
Good · Brown Trout
Grasshopper Pattern · 10-14
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • LevelProxyvia Noguera Pallaresa
  • Water temp8.7°C
  • ClarityClear
Today's fly
Grasshopper Pattern
Grasshopper Pattern10-14
Proven pattern for this period
Conditions on the water
Proxy gauge
Level
Falling
Proxy
via Noguera Pallaresa
Water temp8.7°C
ClarityClear
Weather8°C
WindS 6 km/h
Pressure1021 hPa
Rain · recent2.3 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Noguera Pallaresa. The trend transfers, the absolute level does not.

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
Through the Aran valley trout season. Spring olives once snowmelt drops; sedges through summer; small dark flies into autumn close.
Where
Pool tails and the seams behind boulders through the Aran valley. Spanish Garona / Garonne headwaters — clear cold Pyrenean water.
Method
Upstream dry to risers; dry-dropper through the riffles. Aran valley water reads clear — long leader, fine tippet, careful approach.
Kit
9 ft #4 — French freestone default. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots.
Why this works
Good — river flow is working for you, but insect activity is the limiting factor today.
Hatch timeline · todayPeak at 10am

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Evidence
Survey-backed · regionalHigh 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
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Brown SedgeHatch
1
2
2
2
1

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.
  • Border-water and named-section rules matter here
  • Check the exact Aragón or Catalonia licence requirement, plus any coto or ZPC permit and special seasonal rules for the precise stretch you plan to fish.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Noguera de Tor
21 km
Brown trout
Ésera
32 km
81
Brown trout
Río Flamisell
35 km
Brown trout
Isábena
45 km
81
Brown trout
Cinca
47 km
Brown trout
Gallery · 2
  1. Garona / Garonne (headwaters) — File:ES5130034-Rio Garona-Arties 2.jpg
    File:ES5130034-Rio Garona-Arties 2.jpg
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: High
  • Chemical: Unknown
What this classification means

WFD ecological status Good → High corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody ES091MSPF784 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · ES091MSPF784

The full read · show the working · for Brown Trout · confidence 75%
How the 73 is built — score × weight = contribution
Temperature77 × 28%21.6
Flow95 × 22%20.9
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity25 × 12%3.0
Conditions total= 73
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Noguera Pallaresaproxy
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 check named border section or controlled zone → check named border section or controlled zone
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts