Stillwater · Granite · Massif Central / Puy-de-Dôme (VolcanSancy)

Lac Guéry

Lac de Guéry venue image
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Lac de Guéry sits under the Sancy massif at about 1240 metres — the highest natural lake in the Puy-de-Dôme, volcanic from its bedrock up, and the sort of water that makes you glad you packed a jumper even in July.

Marginal · Trout
Small Perdigón · 16-20
A patient day, if you fancy it
Good wave on — drift country. Take your time — read the water before you cast.
41% confidence
limited data

This venue is often best in spring through autumn.

What moved it
  • WindNW 10 km/hLight breeze
Today’s fly
Small Perdigón
Small Perdigón16-20
Euro-nymph
Conditions on the water
Live gauge
Wind
Light breeze
NW 10 km/h
N
NW
from the north-west
Wave20 cm ripple
Water temp
Air temp20°C
CloudBroken
Pressure1022 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for trout
When
May–October
Where
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A

Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Boat — drift

A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.

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
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Daddy Long LegsHatch
2
3
2
Murrough (Great Red Sedge)Hatch
1
2
1
Lake OliveHatch
1
2
2
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Trout fly box
Permits & access
Permit required — see local rules.
  • AAPPMA permits.
What's coming
Plan ahead
5-day outlook
Condition match
88%
Cloud100%
Wind100%
Temp60%

Conditions are ideal for Lac Guéry — wind, cloud and temperature all line up.

Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Lac de Guéry sits under the Sancy massif at about 1240 metres — the highest natural lake in the Puy-de-Dôme, volcanic from its bedrock up, and the sort of water that makes you glad you packed a jumper even in July. Wild and stocked brown trout share it, and the fishing is straightforward in the best sense: float-tube from the middle, or work the inlet bays on foot with a fast-sinking line and a leech or a small streamer. The surrounding landscape is all volcanic peaks and high pasture, which means wind is not optional — learn to use it rather than fight it. The season is officially 2ème catégorie but realistically early May through September is when anything serious happens. Permits are on the inter-federal card so day tickets are easy enough. A proper Massif Central water — not quite as famous as Pavin, but more fishable, and better suited to a day you want to cover some water.

  • Lake
  • Granite
Water quality (WFD)
  • EcologyModerate
  • ChemicalUnknown
What this classification means

WFD ecological status Good → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody FRFR107B (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · FRFR107B

Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Cloud cover (cloud) suits the fishery well.
  • Sedge is in its seasonal window, boosting the chance of targeted feeding.
Directions
Seasons & zones
  • Trout2nd Saturday of March → 3rd Sunday of September
Related guides
Booking & contacts