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

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

Prime · Brown Trout
CDC Emerger · 16-18
Primelive now
About as good as it gets
River steady at a fishable height. On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% confidence
What moved it
  • Level1.18 mLast reading 2h ago
  • Water temp15.7°C
  • ClarityClear
Today's fly
CDC Emerger
CDC Emerger16-18
Dead-drift
Conditions on the water
Live gauge
Level
Steady
1.18 m
Last reading 2h ago
Water temp15.7°C
ClarityClear
Weather19°C
WindW 6 km/h
Pressure1020 hPa
Rain · recent0.1 mm
Rain · ahead8.8 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

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
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Mayflies
  • Blue-winged oliveMost likely
    #16–18 · Dun
    Duns are up; a sherry spinner fall may follow.
  • Anglers curse mayfliesAlso possibleLower confidence
    #20–22 · Spinner
    Go tiny: 20-22 spent spinner, single fly, long tippet.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 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 · August 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

More balanced than the mountain-river pack. French nymphing still matters, but there is more room for dries, spiders and general searching flies.

Permits & access
Permit required — see local rules.
  • AAPPMA permits.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Pisciculture du Canigó
10 km
Rainbow trout · Brown trout · Char
Bouillouses Mountain Lakes
12 km
Brown trout
Ter
24 km
Brown trout
Freser
25 km
30
Brown trout
Pisciculture de la Fajolle
27 km
Rainbow trout · Brown trout · Char
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.

Hatches & food

No emergence timing has been documented, but DREAL reference-station monitoring at Montfort-sur-Boulzane records a stable, diverse and pollution-sensitive stonefly fauna across five families — a strong indicator of water quality and food base rather than a hatch window.

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

WFD classification · FRDR10162

The full read · show the working · for Brown Trout · confidence 90%
How the 87 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity68 × 12%8.2
Conditions total= 87
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 2nd Saturday of March → 3rd Sunday of September
Related guides
Pyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts