Spate · Granite · Brittany

Aulne

Atlantic salmon and sea trout on Armorican granite in Finistère.

claudine pesquer

Conservation closure

Salmon and sea trout · Brittany 2026 order bans Atlantic salmon and sea trout on all Breton rivers.

Slow going — pick your moments

River lifting fast on the rain. Take your time — read the water before you cast.

45% confidence

limited data

Notify when prime

What moved it

Level0.87 mLifting fast
Water temp16.6°C
ClarityVery colouredColouring up

Today’s fly

CDC Emerger16-18

Dead-drift

Rules at a glance

Day tickets

Live now

Conditions on the water

Live gauge

Trends shown where the gauge supports them

Level

Rising

0.87 m

Lifting fast

Water temp

16.6°C

coldwarm

Clarity

Very coloured

Colouring up

Weather

18°C

Light cloud

Wind

W 17 km/h

calmblown out

Pressure

1024 hPa

lowhigh

Rain · recent

0.0 mm

dryspate risk

Rain · ahead

0.5 mm

dryspate risk

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 autumn close.

Where

Pool tails and the seams behind boulders through the central Brittany stretches. The Aulne is bigger water than most Breton rivers.

Method

Upstream dry to risers; dry-dropper through the riffles. Breton spate freestone — fish 12 to 24 hours after rain on the drop. Long leader, fine tippet.

Kit

9 ft #4 — Breton spate freestone. Floating line, 12 ft leader to 4 lb fluoro. Studded boots.

Why this works

Poor — water temperature is working for you, but water clarity is the limiting factor today.

Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 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

Salmon run

Trout season

March Brown

Grannom

Large Stonefly

Yellow Sally

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
Regional arrêté for season.

What's coming

Plan ahead

5-day outlook

Fishing better nearby · 5

Gallery · 1

Terrain map

About this water

Atlantic salmon and sea trout on Armorican granite in Finistère. Spring salmon March–May. Fish rising water after Atlantic storms when fresh flow brings fish upstream. Clear water between spates thanks to granite drainage. Standard tactics: tubes 1–1.5 inch in flood, dries and doubles as conditions clear. Sea trout excellent. Check Finistère arrêté for season and catch-and-release obligations.

Granite

Water quality (WFD)

Ecology: Good
Chemical: Unknown

WFD classification · FRGR0073

The full read · show the working · for brown trout · confidence 45%

How the 30 is built — score × weight = contribution

Temperature86 × 28%24.1

Flow55 × 22%12.1

Clarity15 × 18%2.7

Feeding Time80 × 13%10.4

Pressure80 × 7%5.6

Insect activity46 × 12%5.5

Limiting factor: Water is very coloured — too coloured for Brown Trout= 60

Can you trust it?

Water temperatureair-to-water estimateestimated

Level / flowon-river gaugeobserved

Prey activitysurvey-backed invertebrate datasurvey

What would change the calculation

A drop and clear would lift the flow and clarity scores.

Directions

Apple Maps Google Maps

Seasons & zones

Salmon1 March → 15 September
Trout2nd Saturday of March → 3rd Sunday of September

Salmon: Banned (2026) — Brittany 2026 order bans Atlantic salmon and sea trout on all Breton rivers.

Sea trout: Banned (2026) — Brittany 2026 order bans Atlantic salmon and sea trout on all Breton rivers.

Related guides

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