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

Garona / Garonne (headwaters)

Garona / Garonne (headwaters) — File:ES5130034-Rio Garona-Arties 2.jpg

The Garona is the Garonne's headwaters — a river rising in high granite peaks and flowing west through the UNESCO Biosphere Reserve of the Val d'Aran.

Today · Closed season
Stonefly Nymph
Forecast · Today
Closed season
Out of season. Try elsewhere.
45% projected
Today's fly
Stonefly Nymph
Stonefly Nymph
Conditions on the water · Today
Proxy gauge
Level
Rising
Proxy
via Noguera Pallaresa
Water temp7.3°C
ClarityUnfishable
Weather6°C
WindN 10 km/h
Pressure1013 hPa
Rain · recent11.8 mm
Rain · ahead1.1 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
7°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.
Likely species
Stoneflies
Hatch timeline · todayQuiet day

12pm(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 17%

Low insect activity predicted today

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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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 · November 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
0
Brown trout
Ésera
32 km
0
Brown trout
Río Flamisell
35 km
0
Brown trout
Cinca
42 km
0
Brown trout
Isábena
45 km
0
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
About this water

Alpine meadows and dramatic mountain habitat frame clear, cold freestone water holding strong wild brown trout. Technically Spanish territory but culturally and geographically overlapped with France. Spanish and French licences required for respective sections.

  • Granite
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 0 is built — score × weight = contribution
Temperature51 × 28%14.3
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity24 × 12%2.9
Conditions total= 63
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Noguera Pallaresaproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
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
At a glance

Garona / Garonne (headwaters) is a freestone river in Catalonia / Occitanie (Val d'Aran), Spain. The catchment geology is recorded as granite, and the water sits at about 1,557 m above sea level. The river is described as roughly 48 km long. The species listed for this water is brown trout. Core methods listed: dry fly; small nymph; czech nymphing. Its Water Framework Directive ecological status is recorded as high. Nearby waters in our listings include Noguera de Tor at 21 km, Ésera at 32 km and Río Flamisell at 35 km.