Stillwater · Limestone · Jura (39) / Les Planches Près Arbois

Pisciculture des Grottes

Pisciculture des Grottes terrain map

A commercial put-and-take fishery near Les Planches Près Arbois in Jura, stocking rainbow trout, brown trout and char.

Fair · Rainbow
Chironome · 12-16
New ruleReported 30 Jul 2026

Severe drought restrictions (crise) in force

The Plateau calcaire zone (Dept 39) is at crise — the second-highest French drought tier — under a préfectoral arrêté. Fishing itself is not named as prohibited, but water is severely restricted and flows are likely very low; fish with care and check locally.

Arrêté préfectoral n°37532

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date.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 Pisciculture des Grottes
Water temperature is the limiting factor today, not the wave. Fish dawn or dusk if you go at all, and handle everything with extra care.
56% confidence

Pisciculture des Grottes is often best in spring through autumn.

What moved it
  • WindW 6 km/hCalm
Today's fly
CH
Chironome12-16
Static
Conditions on the water
Live gauge
Wind
Calm
W 6 km/h
N
W
from the west
WaveRipple
Water temp
Air temp33°C
CloudClear
Pressure1021 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Rainbow
When
Conditions are not ideal but fishable at Pisciculture des Grottes. The ripple should help fish move and feed more confidently. Very warm conditions — trout have a narrower safe zone of cool, oxygen-rich water. Fish only at first light or last light, use barbless hooks, keep fish in the water during release, and stop if fish struggle to recover.
Where
Start with Chironome (12-16) — on the bob / top dropper. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Chironome (12-16) — on the bob / top dropper. Rainbows respond to more active retrieves — try short strips between pauses. If that does not produce, switch depth or speed before changing the pattern entirely.

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.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

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

Ranked for today
Rainbow fly box

French réservoir fishing with strong competition influence: chironomes, Diawl Bachs, blobs, boobies and active lure work all matter.

Permits & access
Permit required — see local rules.
  • Private commercial fishery
  • Weight-based fishing only, rod and corn bait provided
What's coming
Plan ahead
5-day outlook
Condition match
55%
Cloud25%
Wind100%
Temp25%

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

Other water nearby · 5
About this water

A commercial put-and-take fishery near Les Planches Près Arbois in Jura, stocking rainbow trout, brown trout and char. Weight-based fishing only, rod and corn bait provided No standard carte de peche needed — day tickets are bought directly from the venue. Call ahead to confirm current stocking and pricing.

  • Fishery
  • Limestone
Water quality (WFD)
  • EcologyUnknown
  • ChemicalUnknown
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • High temperatures may push fish deeper and reduce surface activity.
Directions
Seasons & zones
  • Trout Year-round (venue's own season — see access_notes)Year-round (venue's own season — see access_notes)
Related guides
Booking & contacts