Stillwater · Mixed · Jura / Franche-Comté, FR

Lac de Vouglans

Turquoise waters of Lac de Vouglans winding through forested limestone hills, Jura, France
Fair · Trout
Small Perdigón · 16-20
New ruleReported 10 Aug 2026

Severe drought restrictions (crise) in force

A préfectoral drought order places this catchment's surface water at crise, the highest of France's four restriction tiers. Fishing itself is not named in the order, but flows are low and water-use restrictions are in force. Zone: Plateau calcaire (dépt 39).

Arrêté préfectoral n°37667 ↗

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date.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

Fairlive now
Reasonable summer fishing likely at Lac de Vouglans
Useful ripple, fishable wave. Worth a session if the wind holds.
53% confidence

Lac de Vouglans is often best in spring through autumn.

What moved it
  • WindSE 4 km/hCalm
Today's fly
Small Perdigón
Small Perdigón16-20
Euro-nymph
Conditions on the water
Estimate
Wind
Calm
SE 4 km/h
N
SE
from the south-east
WaveFlat calm
Water temp16.2°C
Air temp15°C
CloudClear
Pressure1019 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

How to fish it · for Trout
When
Conditions are not ideal but fishable at Lac de Vouglans. Flat calm means fish may be spookier — longer leaders and subtler flies will help.
Where
Start with Perdigón (16-18) — on the point — slow figure-of-eight retrieve. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.
The plan
Plan A

Start with Perdigón (16-18) — on the point — slow figure-of-eight retrieve. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

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

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 with Pro.

Start free trial

14-day free trial. Cancel anytime.

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Claret DunHatch
2
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Flying AntsHatch
1
2
1
Silverhorns & LonghornsHatch
1
2
2
2
1

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

Ranked for today
Trout fly box
What's coming
Plan ahead
5-day outlook
Condition match
64%
Cloud25%
Wind65%
Temp100%

A reasonable day here, though cloud isn't quite in the sweet spot.

Other water nearby · 5
Ain
25 km
38
Brown trout · Grayling
Valserine
14 km
Brown trout · Grayling
Héria
17 km
Brown trout
Les Truites des Rivières
29 km
Rainbow trout
Lac des Rousses
34 km
Brown trout · Rainbow trout · Grayling
Gallery · 2
  1. Turquoise waters of Lac de Vouglans winding through forested limestone hills, Jura, France
    Lac de Vouglans, Jura
  2. Terrain map of the venue
    Terrain map
Why this score
  • Temperature (cool) is in the sweet spot for summer fishing.
Related guides
Thermal Layers & Troutreading depth and temperaturePyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts