Spate · Mixed · Pyrénées-Atlantiques / Pays Basque

Nive

Nive venue image
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The Nive is the salmon river of French Basque country, running with assured composure through mountains and beats where every family has fished for generations.

Marginal · Brown Trout
CDC Emerger · 16-18
Slow going — pick your moments
River high but settled. Take your time — read the water before you cast.
45% confidence
limited data
What moved it
  • Level2.13 mDropping in the last 6h
  • Water temp17.8°C
  • ClarityVery colouredColouring up
Today’s fly
CDC Emerger
CDC Emerger16-18
Dead-drift
Conditions on the water
Live gauge
Level
Rising
2.13 m
Dropping in the last 6h
Water temp17.8°C
ClarityVery coloured
Weather16°C
WindN 8 km/h
Pressure1027 hPa
Rain · recent1.7 mm
Rain · ahead4.4 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Warm — slow
18°C est.ideal 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 evenings; small dark flies into late September.
Where
Upper Nive through the Basque Pyrénées is tight pocket water; the middle river through Cambo widens. Pool tails and the seams behind boulders.
Method
Upstream dry to risers; dry-dropper through the riffles. The Nive's Basque water is clear — long leader, fine tippet.
Kit
9 ft #4 — French freestone default. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots.
Why this works
Poor — barometric pressure is working for you, but water clarity is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 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
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
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.
  • Basque AAPPMA permits
  • Mandatory catch-and-release in some years — verify with local federation.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Nive is the salmon river of French Basque country, running with assured composure through mountains and beats where every family has fished for generations. Spate-responsive—a five-hour lag from mountain rain to river rise—which means a competent angler can read the weather and plan the fishing with proper precision. Spring runs in April and May bring fish on the rising water; the finest fishing comes as the river clears and settles, when a tube of an inch or so gives way to small doubles that trout—including sea trout entering on the same flood—will take with conviction. The river carries the particular character of Basque fishing: serious, orderly, attended by men and women who understand that salmon angling is a discipline as much as a pursuit. Brown trout in the headwaters and tributaries offer orthodox dry-fly sport above Saint-Étienne-de-Baïgorry. Check the current AAPPMA arrêté—the Basque federations manage their waters with exactitude, and the regulations shift on a yearly basis.

  • 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 FRFR271C (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · FRFR271C

The full read · show the working · for brown trout · confidence 45%
How the 30 is built — score × weight = contribution
Temperature60 × 28%16.8
Flow55 × 22%12.1
Clarity15 × 18%2.7
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity24 × 12%2.9
Limiting factor: Water is very coloured — too coloured for Brown Trout= 45
Can you trust it?
Water temperatureair-to-water estimateestimated
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.
A drop and clear would lift the flow and clarity scores.
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

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

Sea trout: Seasonal open (2026) — Nive — the Basque river draining from the Pyrenees through Bayonne. Sea trout (truite de mer) confirmed as a seasonal quarry alongside salmon. Active sea trout fishery in the Basque Pyrénées-Atlantiques zone. Supersedes earlier 'verify_locally' provisional status.

Related guides
Booking & contacts