Spate · Granite · Brittany / Côtes-d'Armor (Trégor), FR

Léguer

A frost-covered bend of the Léguer river at dawn, with a stone house among bare trees on the bank.

Brittany river on granitic bedrock.

Today · Closed season
Black Gnat
New ruleReported 14 Aug 2026

Severe drought restrictions (crise) in force

VigiEau lists this venue's surface-water zone (Zone ouest, dépt 22) 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°37718 ↗

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date.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
Black Gnat
Black Gnat
Conditions on the water · Today
Live gauge
Level
Rising
0.33 m
Lifting fast
Water temp16.5°C
ClarityUnfishable
Weather16°C
WindN 26 km/h
Pressure1013 hPa
Rain · recent0.7 mm
Rain · ahead0.0 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
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 and sedges through May; summer evenings; small dark flies into autumn close.
Where
Pool tails and pocket water through the Côtes-d'Armor valley. Once one of Brittany's premier sea-trout rivers; the sea-trout fishery is now closed under the 2026 Brittany order, but brown-trout fishing remains.
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.
Likely species
Stoneflies
Caddisflies
Gammarids
Hatch timeline · todayPeak at 11am

12pm(now) — Heather Fly

Stage: Terrestrials on topApproach: Dry flyActivity: 47%
Also:Reed Smut47%Cinnamon Sedge25%Autumn Dun23%
Peak emergence window9 food groups active

Peak activity at 11am — Reed Smut (Reed Smut, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

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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
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
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
Trieux
25 km
0
Brown trout · Salmon · Sea trout
Aulne
46 km
0
Brown trout · Salmon · Sea trout
Étang Neuf (Saint-Connan)
31 km
Rainbow trout · Brown trout
Lac Saint-Michel (Brennilis)
42 km
Rainbow trout · Pike
Lac du Drennec
47 km
Brown trout · Rainbow trout · Pike
Gallery · 2
  1. A frost-covered bend of the Léguer river at dawn, with a stone house among bare trees on the bank.
    Le Leguer par -4°C
  2. Terrain map of the venue
    Terrain map
About this water

Brittany river on granitic bedrock. Wild brown trout water with fly-fishing opportunity. Spring through early summer offers best dry-fly potential when seasonal hatches activate. Responsive to Atlantic rainfall for water volume. Check local AAPPMA for public access details and any regulations or catch-and-release requirements.

Hatches & food

On Atlantic trout rivers in Normandy and Brittany, regional studies and on-the-bank experience point to spring mayflies as the main early driver, a strong band of spring and early-summer caddis as channels warm and open, background buzzer life ticking away right through the year, and terrestrials from wooded banks adding important surface food in summer and early autumn, with autumn olives extending sport wherever trout-season rules allow.

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

WFD classification · FRGR0047

The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature64 × 28%17.9
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity57 × 12%6.8
Conditions total= 70
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
Apple MapsGoogle Maps
Seasons & zones
  • Trout 2nd 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
Pyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts