Freestone · Granite · Massif Central / Haute-Loire (Tence)

Haut-Lignon

Haut-Lignon terrain map
Terrain map

The upper Lignon rises on the granite of the Velay around Tence — a thin, clear headwater network that the local federation has been quietly protecting for decades.

Marginal · Brown Trout
Small Perdigón · 16-20
Marginallive now
Slow going — pick your moments
Low and clear — careful approach country. Cover and shadow are doing the work today.
80% confidence
What moved it
  • Level0.12 mLast reading 7h ago
  • Water temp19.9°C
  • ClarityClear
Today’s fly
Small Perdigón
Small Perdigón16-20
Euro-nymph
Conditions on the water
Live gauge
Level
Steady
0.12 m
Last reading 7h ago
Water temp19.9°C
ClarityClear
Weather26°C
WindN 8 km/h
Pressure1020 hPa
Rain · recent0.2 mm
Rain · ahead0.3 mm

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

Water temperature for brown trout
Warm — slow
20°C est.ideal 1016°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
⚠️ Water at 19.9°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
Trout seasonSeason
1
2
2
2
2
2
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
GrannomHatch
1
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.
What's coming
Plan ahead
5-day outlook
Water here around 20°C. Nothing cooler within range — carry a thermometer.
About this water

The upper Lignon rises on the granite of the Velay around Tence — a thin, clear headwater network that the local federation has been quietly protecting for decades. The fish are wild browns, local-strain, and present in genuine numbers where the habitat is right. The upper reaches demand a walk — an hour or two along a forest track, sometimes more — and that's the filter. By the time you get there you've earned the solitude and the fishing tends to reflect it. Baetis and caddis make up most of the surface food; terrestrials take over when the water drops. Work upstream with short, careful casts and expect small fish willing to work for a drag-free drift. The atmosphere is half the point. You don't fish the haut Lignon for a trophy. You fish it for the walk out at the end of the afternoon, with a flask of something warm and the light going over the Monts du Vivarais.

  • Granite
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · FRGR0161A

The full read · show the working · for brown trout · confidence 80%
How the 28 is built — score × weight = contribution
Temperature26 × 28%7.3
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Conditions total= 62
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.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout2nd Saturday of March → 3rd Sunday of September
Related guides
Booking & contacts