Freestone · Limestone · Pyrénées-Orientales / Fenouillèdes

Boulzane

A stone arch bridge crossing the shallow, rocky Boulzane river lined with dense green vegetation in the Fenouillèdes region of France
Contributor photo

The Boulzane river at Caudiès-de-Fenouillèdes

Lucas Destrem

The Boulzane flows through the Fenouillèdes basin where Pyrenean stone creates clear water and good trout.

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
  • LevelDry recentlyNo gauge reading
  • Water temp15.9°C
  • ClarityClear
Today’s fly
CDC Emerger
CDC Emerger16-18
Dead-drift
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp15.9°C
ClarityClear
Weather15°C
WindSW 12 km/h
Pressure1020 hPa
Rain · recent0.0 mm
Rain · ahead3.9 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for brown trout
Ideal
16°C est.ideal 10–16°C
0°14°28°
How to fish it · for brown trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Good — water temperature 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 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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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 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
Trout seasonSeason
1
2
2
2
2
2
1
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Large StoneflyHatch
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.
  • Cartes de pêche AAPPMA.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Bouillouses Mountain Lakes
12 km
Brown trout
Ter
24 km
Brown trout
Freser
25 km
38
Brown trout
Tech
30 km
Brown trout · Grayling
Segre (Cerdagne)
30 km
Brown trout · Grayling
Gallery · 2
  1. A stone arch bridge crossing the shallow, rocky Boulzane river lined with dense green vegetation in the Fenouillèdes region of France
    The Boulzane river at Caudiès-de-Fenouillèdes
  2. Terrain map of the venue
    Terrain map
About this water

The Boulzane flows through the Fenouillèdes basin where Pyrenean stone creates clear water and good trout. AAPPMA-managed with both fly-only and general beats. No-kill stretch available. Wild brown trout respond to seasonal patterns — Baetis in spring, sedges and mayflies through summer. Spate character after rainfall. Check local regulations for parcours requirements.

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

WFD classification · FRDR10162

The full read · show the working · for brown trout · confidence 75%
How the 76 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity61 × 12%7.3
Conditions total= 76
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
  • Trout2nd Saturday of March → 3rd Sunday of September
Related guides
Pyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts