Spate · Granite · Brittany / Finistère (Quimper), FR

Odet

Photo of Odet

Brittany river near Quimper on granitic Armorican bedrock.

Poor · Brown Trout
Pheasant Tail Nymph · 14-18
New ruleReported 7 Aug 2026

Severe drought restrictions (crise) in force

VigiEau lists this venue's surface-water zone (ODET, dépt 29) 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°37652 ↗

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date.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

Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • Level0.24 m
  • Water temp18.6°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Live gauge
Level
Steady
0.24 m
Water temp18.6°C
ClarityClear
Weather22°C
WindSE 32 km/h
Pressure1009 hPa
Rain · recent1.9 mm
Rain · ahead16.1 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
19°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
Water at 18.6°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Likely species
Stoneflies
Caddisflies
Hatch timeline · todayPeak at 11am

Hatch predictions

Today's headline hatch shown — see all 11 active hatches hour by hour as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 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
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. Photo of Odet
    Odet — image via Wikipedia (Odet)
  2. Terrain map of the venue
    Terrain map
About this water

Brittany river near Quimper on granitic Armorican bedrock. Wild trout water with fly-fishing opportunity on accessible beats. Spring through early autumn fishing. Spate character means good flow after Atlantic rainfall. Some sections may be private; check AAPPMA for public access and regulations.

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: Failing to achieve good
What this classification means

WFD re-coded 2026-06-18: prior id FRGR0083 actually identifies the Jet — this river was mis-tagged to a neighbouring water body. Re-mapped to FRGR0078. Status: EEA WISE 2022 (3rd RBMP). Confidence: high — single Odet water body. Source: discodata.eea.europa.eu.

WFD classification · FRGR0078

The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature31 × 28%8.7
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity70 × 12%8.4
Conditions total= 65
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