Freestone · Granite · Lozère, FR

Tarn (Upper)

Aerial view of the Tarn river winding through the deep limestone Gorges du Tarn, with a village and wooded slopes visible.

The upper Tarn rises on the Cévennes flank of Mont Lozère and runs south-west through granite and schist country before the famous limestone gorges take over further down.

Today · Closed season
Gold-Ribbed Hare's Ear
New ruleReported 12 Sept 2026

Severe drought restrictions (crise) in force

VigiEau lists this venue's surface-water zone (bassin du Tarn, dépt 48) at crise, under an official préfectoral drought arrêté. Fishing is not itself banned by it, but water levels are low — go gently on stressed fish.

Arrêté préfectoral n°38072 ↗

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date. Always confirm locally before travelling.

Forecast · Today
Closed season
Out of season. Try elsewhere.
45% projected
Today's fly
Gold-Ribbed Hare's Ear
Gold-Ribbed Hare's Ear
Conditions on the water · Today
Live gauge
Level
Rising
0.46 m
Lifting fast
Water temp14.5°C
ClarityUnfishable
Weather16°C
WindN 15 km/h
Pressure1023 hPa
Rain · recent0.6 mm
Rain · ahead7.7 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
15°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 evenings; small dark flies into autumn close.
Where
Pool tails and pocket water through the Lozère gorge stretches. Cévennes freestone — clear water, intimate scale.
Method
Upstream dry to risers; dry-dropper through the riffles. The water reads clear — long leader, fine tippet. Move slowly, cast accurately.
Kit
9 ft #4 — French freestone default. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots.
Likely species
Hatch timeline · todayPeak at 2pm

12pm(now) — Daddy Long Legs

Stage: On emergersApproach: Emerger or dryActivity: 32%
Also:Cinnamon Sedge27%Heather Fly26%Autumn Dun24%
Weather boost8 food groups active

Peak activity at 2pm — Autumn Dun (Autumn Dun, 12 food groups active)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
1
2
2
2
1
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1

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
Gallery · 2
  1. Aerial view of the Tarn river winding through the deep limestone Gorges du Tarn, with a village and wooded slopes visible.
    Gorges du Tarn, France
  2. Terrain map of the venue
    Terrain map
About this water

The upper Tarn rises on the Cévennes flank of Mont Lozère and runs south-west through granite and schist country before the famous limestone gorges take over further down. What most tourists think of as the Gorges du Tarn is the postcard section below Florac; the fishing is further up, in the headwater country above Les Vignes where wild brown trout and grayling share fast runs with the occasional deep holding pool. The grayling here are the real draw — good numbers, willing feeders, and educated enough to make you pay attention. Work upstream with a small olive or baetis imitation in spring, move to caddis in June, keep a brace of pheasant-tail nymphs for when nothing is showing. The gauge runs quickly after rainfall — which is often, because this is Cévennes weather — so plan with the trend in mind. A classic southern river in a landscape that will distract you from the fishing, which is its own kind of problem.

  • Granite
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
What this classification means

WFD ecological status Good → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody FRFR305 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · FRFR305

The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity71 × 12%8.5
Conditions total= 84
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
Seasons & zones
  • Trout 2nd Saturday of March → 3rd Sunday of September
  • Grayling 3rd Saturday of May → 3rd Sunday of September

    France national rule: grayling opens 3rd Saturday of May in all waters. In 1st category (salmonid) rivers, grayling closes with the trout season on the 3rd Sunday of September. Departmental regulations may impose additional restrictions. Always check the relevant département's 2026 arrêté préfectoral.

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