Spate · Limestone · Pyrénées-Atlantiques / Soule

Saison (Gave de Mauléon)

Saison venue image
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Major tributary of the Gave d'Oloron.

Good · Brown Trout
CDC Emerger · 16-18
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • Level0.15 m
  • Water temp17.0°C
  • ClarityClear
Today’s fly
CDC Emerger
CDC Emerger16-18
Dead-drift
Conditions on the water
Live gauge
Level
Steady
0.15 m
Water temp17.0°C
ClarityClear
Weather17°C
WindW 6 km/h
Pressure1026 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

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

Water temperature for brown trout
Warm — slow
17°C est.ideal 10–16°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
Pool tails and seams behind boulders through the Mauléon valley. The Saison runs intimate Basque freestone water.
Method
Upstream dry to risers; dry-dropper through the riffles. 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
Good — water clarity is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 8 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
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.
  • AAPPMA permits required
  • Seasonal arrêté governs salmon dates.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gave d'Oloron
19 km
83
Brown trout
Adour
21 km
22
Brown trout · Salmon · Sea trout
Gave d'Aspe
35 km
79
Brown trout · Grayling
Gave de Pau
37 km
Brown trout · Salmon
Gave d'Ossau
37 km
82
Brown trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Major tributary of the Gave d'Oloron. Mountain spate river with limestone clarity. Salmon and large trout. Fish during the rising phase when snowmelt brings fresh water upstream. 4-hour response time. Standard salmon flies: tubes in high water, doubles and small dries as conditions clear. Check regional arrêté for season and parcours regulations.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · FRFR262

The full read · show the working · for brown trout · confidence 75%
How the 73 is built — score × weight = contribution
Temperature77 × 28%21.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 73
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
  • SalmonSalmon season: 15 March – 15 July (Pyrénées-Atlantiques standard). Always verify current arrêté with local AAPPMA. → 15 July

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

Related guides
Pyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts