Freestone · Mixed · Hautes-Pyrénées to Bayonne

Adour

Adour venue image
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The Adour is the salmon river of Gascony — running from the Pyrenean headwaters above Bagnères-de-Bigorre all the way to the Atlantic at Bayonne, with the main salmon fishing concentrated on the middle river around Dax and below.

Poor · Brown Trout
Small Perdigón · 16-20
Poorlive now
Not the day for it
River steady at a fishable height. Take your time — read the water before you cast.
80% confidence
What moved it
  • Level0.45 mLast reading 3h ago
  • Water temp20.9°C
  • ClarityClear
Today’s fly
Small Perdigón
Small Perdigón16-20
Euro-nymph
Conditions on the water
Live gauge
Level
Steady
0.45 m
Last reading 3h ago
Water temp20.9°C
ClarityClear
Weather18°C
WindNW 11 km/h
Pressure1027 hPa
Rain · recent3.4 mm
Rain · ahead4.4 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for brown trout
Warm — slow
20.9°Cideal 1016°C
0°14°28°
How to fish it · for brown trout
When
Through the open trout season. Spring olives April through May; sedges through summer; small dark flies into late September.
Where
Upper Adour through Bigorre is small tight water; the middle river widens through Tarbes. Pool tails and seams behind boulders.
Method
Upstream dry to risers; dry-dropper through the riffles. The Adour reads as classic Pyrenean freestone — 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
⚠️ Water at 20.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour 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 · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
1
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
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.
  • AAPPMA permits
  • Departmental arrêté for salmon.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 3
Water here at 20.9°C — the fishing's alive, but these are cooler if you'd rather rest the warm water.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Adour is the salmon river of Gascony — running from the Pyrenean headwaters above Bagnères-de-Bigorre all the way to the Atlantic at Bayonne, with the main salmon fishing concentrated on the middle river around Dax and below. Spring is the season: April and May are the best weeks, when the runs come in on the rising water after Pyrenean rainfall and fresh fish push up through the lower pools. Fish the rising and falling water properly. Tube flies of an inch to an inch-and-a-half in coloured water, dressing down to doubles and singles as the water clears. The main holding pools are well known to the local AAPPMAs and the beats rotate on a system that generally works. Sea trout run with the salmon and take the same flies in daylight, as they do across the Cantabrian salmon rivers — this is not night-fishing country. Brown trout and grayling in the upper valleys for the non-salmon weeks. Check the regional arrêté before fishing: French salmon regulations tighten almost yearly and the quota system is strict.

  • Mixed
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown
What this classification means

WFD ecological status Moderate → Good corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody FRFRR238_4 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · FRFRR238_4

The full read · show the working · for brown trout · confidence 80%
How the 22 is built — score × weight = contribution
Temperature15 × 28%4.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity56 × 12%6.7
Limiting factor: Water temperature (20.9°C) is outside Brown Trout's preferred range (10–16°C)= 59
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Salmon1 March → 31 July
  • Trout2nd Saturday of March → 3rd Sunday of September
  • Grayling3rd Saturday of May → 3rd Sunday of September

Salmon: Banned (2026) — Adour-Gaves basin renewed salmon ban for 2026.

Sea trout: Seasonal open (2026) — Adour basin — sea trout confirmed in the lower Adour and lower Gave d'Oloron tributary. The Adour system legally targets truite de mer as part of the Atlantic migratory species framework. Supersedes 'verify_locally' provisional status.

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